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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Nitroso, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Nitroso impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Nitroso-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Nitroso Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(±)-N'-Nitrosoanatabine-d3 (1,2,3,6-tetrahydropyridinyl-3,3,... Stable Isotopes CS-C-00467 Not Available Enquire
(4bS,8aS,9S)-3-Methoxy(d3)-11-Nitroso-6,7,8,8-alpha,9,10-Hex... Stable Isotopes CS-O-41340 Not Available In Stock
(R)-N-Nitroso Anabasine-d4 Stable Isotopes CS-T-104127 Not Available Enquire
(R)-N'-Nitrosonornicotine-d4 Stable Isotopes CS-P-08860 61601-78-3 (Unlabelled) Enquire
(R,S)-N2-Nitroso-Anabasine-d4 N’-β-D-Glucuronide Stable Isotopes CS-T-98764 1033078-12-4(Unlabelled) Enquire
(R,S)-N-Nitroso Anabasine D4 Stable Isotopes CS-T-59611 1020719-68-9 Enquire
(R,S)-N-Nitroso Anatabine-13C6 Stable Isotopes CS-T-98763 Not Available Enquire
(R,S)-N-Nitroso Anatabine-2,4,5,6-d4 Stable Isotopes CS-T-59614 1020719-69-0 Enquire
(S)-1-Nitrosopiperidin-3-ol-d4 Stable Isotopes CS-T-99929 Not Available Enquire
(S)-N-Nitroso Anabasine-d4 Stable Isotopes CS-T-104126 Not Available Enquire
(S)-N-Nitroso Rivaroxaban Phthalimido Analog-d4 Stable Isotopes CS-O-52466 Not Available In Stock
1-(2,3-dichlorophenyl)-4-nitrosopiperazine D8 Stable Isotopes CS-O-53624 2989508-28-1 (unlabelled) Enquire
1,4-Dinitrosopiperazine-d8 Stable Isotopes CS-T-53751 69340-07-4 In Stock
15N-Nitroso Terbutaline Stable Isotopes CS-EO-02972 Not Available Enquire
1-Cyclopentyl-4-nitrosopiperazine-15N Stable Isotopes CS-T-104106 Not Available Enquire
1-Cyclopentyl-4-nitrosopiperazine-15N3 Stable Isotopes CS-T-104105 Not Available Enquire
1-methyl-4-nitrosopiperazine-d11 Stable Isotopes CS-O-40718 16339-07-4 (Unlabelled) Enquire
1-Nitroso-1-(2-Hydroxyethyl)-3-(2-chloroethyl)urea-d4 Stable Isotopes CS-T-99938 Not Available Enquire
1-Nitroso-L-histidine-d5 Stable Isotopes CS-O-58986 932446-62-3 (Unlabeled) Enquire
2-(1-Nitrosopyrrolidin-3-yl)-2,2-bis(phenyl-d5)acetamide Stable Isotopes CS-T-104135 Not Available Enquire
2-(1-Nitrosopyrrolidin-3-yl)-2,2-bis(phenyl-d5)acetonitrile Stable Isotopes CS-T-104134 Not Available Enquire
2-(2-((4-aminophenyl-D4)(nitroso)amino)ethoxy)acetic acid Stable Isotopes CS-O-52462 Not Available Enquire
2-(4-nitrosopiperazin-2,2,3,3,5,5,6,6-d8-1-yl)ethanol Stable Isotopes CS-O-52959 48121-20-6 (Unlabelled) Enquire
2,2,6,6-Tetradeuterio-1-nitrosopiperidin-3-amine Hydrochlori... Stable Isotopes CS-T-104104 Not Available Enquire
2,6-Diamino-4-hydroxy-5-nitrosopyrimidine-13C2 Stable Isotopes CS-T-99294 2710560-37-3 Enquire
2,6-Diamino-4-hydroxy-5-nitrosopyrimidine-13C2,15N Stable Isotopes CS-T-100491 Not Available Enquire
2-[(carboxymethyl)(nitroso)amino]acetic acid-D4 Stable Isotopes CS-O-46483 25081-31-6 (Unlabelled) Enquire
2-[Nitroso(Phenylmethyl)Amino]Benzoic acid-d7 Stable Isotopes CS-O-53627 Not Available In Stock
3-((ethyl(nitroso)amino)methyl)benzenesulfonic acid (D4-Ring... Stable Isotopes CS-O-44282 Not Available Enquire
3-((ethyl-D5(nitroso)amino)methyl)benzenesulfonic acid Stable Isotopes CS-O-44281 Not Available Enquire
4-(6-Nitro-3-pyridinyl)-1-nitroso-piperazine-2,2,6,6-d4 Stable Isotopes CS-T-104125 2089333-13-9 Enquire
4-Chloro-6-nitrosoresorcinol-d1 Stable Isotopes CS-T-101689 Not Available Enquire
4-Chloro-6-nitrosoresorcinol-d2 Stable Isotopes CS-T-101690 Not Available Enquire
4-Nitroso Hydrochlorothiazide-13C,15N2,d2 Stable Isotopes CS-O-42065 63779-86-2(Unlabeled) Enquire
4-Nitroso Hydrochlorothiazide-13C-d2 Stable Isotopes CS-O-49257 Not Available Enquire
4-Nitroso-3,5-xylenol-d6 Stable Isotopes CS-T-102177 Not Available Enquire
5-(4-Nitrosopiperazin-1-yl)benzofuran-2-carboxylic Acid Ethy... Stable Isotopes CS-T-102178 Not Available Enquire
6-Amino-5-nitrosouracil-13C,15N2 Stable Isotopes CS-T-100856 Not Available Enquire
6-Amino-5-nitrosouracil-13C2 Stable Isotopes CS-T-102253 Not Available Enquire
Betahistine Nitroso Methylamine 13CD3 Stable Isotopes CS-EO-02943 Not Available Enquire
Bumetanide 3-(Butyl(Nitroso)Amino)-d5 Stable Isotopes CS-T-103058 2490432-02-3(Unlabelled) In Stock
Carmustine-D8-Nitroso Stable Isotopes CS-T-103871 154-93-8(unlabelled) Enquire
D2-N-Nitroso desmethyldoxycycline Stable Isotopes CS-O-44213 Not Available Enquire
Descyclopropyl N-Nitroso Olaparib (Piperzine-d8) Stable Isotopes CS-O-53088 2742659-74-9 (Unlabelled) In Stock
Desmethyl 2N-Nitroso Mirtazapine-d6 Stable Isotopes CS-O-42867 ---- In Stock
Dimethyl-[7-[nitroso(trideuteriomethyl)amino]phenothiazin-3-... Stable Isotopes CS-O-53327 ---- Enquire
Mixture of  (R,S)-N-Nitroso Anabasine-d4, rac N’-Nitrosonorn... Stable Isotopes CS-T-98765 Not Available Enquire
Mononitroso Caffeidine-d9 Stable Isotopes CS-O-57453 145438-96-6 (Unlabeled) Enquire
Moxifloxacin Nitroso Impurity 2-d4 Stable Isotopes CS-O-57662 Not Available In Stock
N Nitroso Duloxetine-d7 Stable Isotopes CS-O-46011 ---- Enquire
N-​Ethyl ​N-​Nitroso 2-​Propanamine-d6 Stable Isotopes CS-O-34909 16339-04-1 (Unlabeled) In Stock
N-​Ethyl-​N-​Nitroso-2-​Propanamine-d6 1mg/ml in Methanol Stable Isotopes CS-O-53420 16339-04-1 (Unlabeled) In Stock
N-(Methyl-d3)-N-nitrosourea-13C Stable Isotopes CS-O-52485 2483824-34-4 Enquire
N1-Nitroso Tryptophan-d5 Stable Isotopes CS-O-58641 68807-89-6(Unlabeled) Enquire
N-Desmethyl N-Nitroso Dalbavancin B0-D3 Stable Isotopes CS-O-58870 ---- Enquire
N-desmethyl N-nitroso Diltiazem-D3 Stable Isotopes CS-O-52036 Not Available Enquire
N-Desmethyl N-Nitroso Galantamine-D3 Stable Isotopes CS-O-55151 ---- Enquire
N-Desmethyl N-Nitroso Galantamine-d4 Stable Isotopes CS-O-55238 ---- Enquire
N-Desmethyl N-Nitroso Methadone-D3 Stable Isotopes CS-O-45245 ---- Enquire
N-Desmethyl N-Nitroso Rifampicin-D8 Stable Isotopes CS-O-45507 Not Available Enquire
N-Desmethyl N-Nitroso Tamoxifen-d3 Stable Isotopes CS-O-44821 Not Available In Stock
N-desmethyl N-Nitroso Topotecan-D3 Stable Isotopes CS-O-45827 Not Available Enquire
N-Desmethyl N-nitroso Tramadol-d3 Stable Isotopes CS-O-54795 ---- Enquire
N-desmethyl-N-Nitroso DMAMP-d2 Stable Isotopes CS-O-59153 27646-81-7(Unlabeled) Enquire
N-desmethyl-N-Nitroso DMAMP-d3 Stable Isotopes CS-O-59154 27646-81-7(Unlabeled) Enquire
N-desmethyl-N-Nitroso DMAMP-d6 Stable Isotopes CS-O-59152 27646-81-7(Unlabeled) Enquire
N-Ethyl-N-Nitroso-1-Propanamine-d4 Stable Isotopes CS-T-93510 25413-61-0(Unlabelled) In Stock
Nitroso Betahistine-d3 Stable Isotopes CS-O-46019 32635-81-7 (Unlabelled) In Stock
Nitroso-STG-19 (Sitagliptin)-15ND4 Stable Isotopes CS-T-104129 Not Available Enquire
Nitroso-STG-19 (Sitagliptin)-5,5,6,6-d4 Stable Isotopes CS-O-46037 2892260-32-9 (Unlabelled) In Stock
Nitroso-STG-19 (Sitagliptin)-6,6,8,8-d4 Stable Isotopes CS-O-46036 2892260-32-9 (Unlabelled) Enquire
Nitrosotetracaine-d6 Stable Isotopes CS-O-38441 3038740-94-9 (Unlabelled) In Stock
N-Methyl-d3-N-Nitroso-p-Toluenesulfonamide Stable Isotopes CS-T-94154 42366-72-3 In Stock
N-Methyl-N-nitroso Urea-d5 Stable Isotopes CS-T-96037 2733722-92-2 Enquire
N-Methyl-N-nitroso Urea-d6 Stable Isotopes CS-T-100004 Not Available Enquire
N-Methyl-N'-nitrosopiperazine-15N Stable Isotopes CS-T-104108 Not Available Enquire
N-Methyl-N'-nitrosopiperazine-15N3 Stable Isotopes CS-T-104107 Not Available Enquire
N-Methyl-N-Nitrosopiperazine-d4 Stable Isotopes CS-T-81300 756524-88-6 In Stock
N-Methyl-N-Nitrosopiperazine-d4 1mg/1ml in Methanol Stable Isotopes CS-O-43183 756524-88-6 In Stock
N-Nitroso Levoamlodipine D4 Stable Isotopes CS-O-58365 ---- Enquire
N-nitroso Adenine d2 Stable Isotopes CS-O-45407 2615274-45-6 (Unlabelled) Enquire
N-Nitroso Adrenalone-D3 Stable Isotopes CS-O-52055 ---- Enquire
N-Nitroso Ambroxol-15N Stable Isotopes CS-O-41442 Not Available Enquire
N-Nitroso Ambroxol-d5 Stable Isotopes CS-O-58369 ---- Enquire
N-Nitroso Amlodipine D4 Stable Isotopes CS-O-52005 Not Available discontinued
N-Nitroso Amodiaquine-D10 Stable Isotopes CS-T-104136 Not Available Enquire
N-Nitroso Aprepitant intermediate D4 Stable Isotopes CS-O-52326 171338-27-5 (Unlabelled) Enquire
N-Nitroso Atenolol-d7 Stable Isotopes CS-O-45442 Not Available In Stock
N-Nitroso Atropine EP Impurity B-d5 Stable Isotopes CS-O-60419 55855-45-3 (Unlabeled) Enquire
N-Nitroso Avatrombopag imp-d8 (1-cyclohexyl-4-nitrosopiperaz... Stable Isotopes CS-O-58885 ---- Enquire
N-Nitroso Azithromycin EP impurity A-13CD3 Stable Isotopes CS-O-53432 ---- Enquire
N-Nitroso Azithromycin EP impurity A-15N-d3 Stable Isotopes CS-O-55556 ---- Enquire
N-Nitroso Azithromycin EP impurity A-d3 Stable Isotopes CS-O-53431 ---- Enquire
N-Nitroso Benazepril D5 Stable Isotopes CS-O-43274 Not Available Enquire
N-Nitroso Benzydamine ring open impurity-d4 Stable Isotopes CS-O-54792 ---- Enquire
N-Nitroso Bisoprolol-D5 Stable Isotopes CS-T-103100 2820170-76-9(Unlabelled) Enquire
N-Nitroso Bosutinib-d3 Stable Isotopes CS-O-59944 ---- Enquire
N-Nitroso Bupropion-d9 Stable Isotopes CS-O-48596 2763780-10-3 (Unlabelled) In Stock
N-Nitroso Buspirone Impurity 1-d4 Stable Isotopes CS-O-57431 872826-80-7 (Unlabeled) In Stock
N-Nitroso Buspirone Impurity 1-d8 Stable Isotopes CS-O-57428 872826-80-7 (Unlabeled) Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-nitrosopiperidin-4-amine API CS-O-57438 ---- Enquire
N-Nitroso Tegoprazan impurity 1 API CS-O-54409 ---- Enquire
N-Nitroso Tegoprazan impurity 2 API CS-O-54408 Not Available Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
5,5-dimethyl-3-(4-nitroso-3-(trifluoromethyl)phenyl)imidazol... Metabolite CS-O-13335 Not Available Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-Methoxy-4-nitrosobenzene Impurity CS-O-55207 1516-21-8 Enquire
2-(2-((4-aminophenyl)(nitroso)amino)ethoxy)acetic acid Impurity CS-O-52461 ---- Enquire
4-methoxy-N-(4-methoxyphenyl)-N-nitrosoaniline Impurity CS-O-53885 6947-36-0 In Stock
5-[(4-bromo-2-fluorophenyl)amino]-4-fluoro-N-(2-hydroxyethox... Impurity CS-O-54665 ---- Enquire
Capivasertib Nitroso Impurity 2 Impurity CS-O-58544 ---- Enquire
Fluoxetine Nitroso EP Impurity A Impurity CS-O-44125 2659259-65-9 In Stock
N,N-Dinitroso Pantoprazole EP Impurity E Impurity CS-O-60040 ---- Enquire
N-Methyl-N-Nitroso p-Toluidine Impurity CS-O-44189 937-24-6 In Stock
N-Nitroso desmethyl lercanidipine Imp-D Impurity CS-O-58220 ---- Enquire
N-Nitroso Hydrochlorothiazide Impurity CS-O-38268 ---- Enquire
N-nitroso Mirabegron EP Impurity F Impurity CS-O-53985 3032026-53-9 Enquire
N-Nitroso Prucalopride Impurity CS-O-54421 ---- Enquire
N-Nitroso Ribociclib Impurity 5 Impurity CS-O-46945 Not Available Enquire
N-Nitroso Rilpivirine 1 Impurity CS-O-38431 ---- Enquire
N-Nitroso Suvorexant Impurity 5 Impurity CS-O-56790 Not Available In Stock
N-Nitroso Zanubrutinib Desacryloyl impurity 2 Impurity CS-O-53881 --- Enquire
Penciclovir Nitroso Impurity 1 Impurity CS-O-54957 ---- Enquire
Selumetinib Nitroso Impurity 2 Impurity CS-O-60477 ---- Enquire
Sunitinib Intermediate Nitroso Impurity 1 Impurity CS-O-58643 Sunitinib Enquire
7-(1-nitrosopiperidin-4-yl)-2-(4-phenoxyphenyl)-4,5,6,7-tetr... Impurity CS-O-54987 ---- Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(＋)-alpha-[(Methylnitrosoamino)methyl] benzenemethanol Nitrosamine CS-O-44230 72656-46-3 Enquire
(1-Nitrosoazepan-4yl)benzozide Nitrosamine CS-O-53827 ---- Enquire
(1-nitroso-azepan-4yl)hydrazine Nitrosamine CS-O-53530 ---- Enquire
(1-Nitrosoazetidin-3-yl)methanol Nitrosamine CS-O-58388 2901864-53-5 Enquire
(1-Nitrosoethyl)benzene Nitrosamine CS-O-59990 15762-23-9 Enquire
(1-nitrosopiperidin-2-yl)methanamine Nitrosamine CS-O-40311 Not available In Stock
(1-nitrosopiperidin-2-yl)methanol Nitrosamine CS-O-41257 64605-07-8 In Stock
(1-nitrosopiperidin-4-yl)methanamine hydrochloride Nitrosamine CS-O-46781 Not Available Enquire
(1R,3R,5R)-2-Nitroso-2-azabicyclo[3.1.0]hexane-3-carbonitril... Nitrosamine CS-O-40584 Not Available In Stock
(2R,3S)-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3-(... Nitrosamine CS-O-40098 Not Available Enquire
(2S)-N'-Nitrosonornicotine Nitrosamine CS-T-37266 16543-55-8 In Stock
(2S,3aR,7aS)-1-nitrosooctahydro-1H-indole-2-carboxylic acid Nitrosamine CS-O-52957 Not Available In Stock
(2S,3aS,6aS)-1-nitrosooctahydrocyclopenta[b]pyrrole-2-carbox... Nitrosamine CS-O-52956 Not Available In Stock
(2S,3aS,7aS)-1-Nitrosooctahydro-1H-indole-2-carboxylic acid Nitrosamine CS-BX-03007 2912492-21-6 In Stock
(2S,4S)-4-cyclohexyl-1-nitrosopyrrolidine-2-carboxylic acid Nitrosamine CS-O-53064 ---- Enquire
(4,5-dibromo-1-nitroso-1H-pyrrol-2-yl)(phenyl)methanone Nitrosamine CS-O-56810 ---- Enquire
(4aR,7aS)-6-benzyl-1-nitrosooctahydro-1H-pyrrolo[3,4-b]pyrid... Nitrosamine CS-O-45881 Not Available Enquire
(4-bromophenyl)(1-nitroso-1H-indol-7-yl)methanone Nitrosamine CS-O-53515 ---- Enquire
(4-bromophenyl)(3-chloro-1-nitroso-1H-indol-7-yl)methanone Nitrosamine CS-O-53516 ---- Enquire
(4-nitrosopiperazin-1-yl)methanol Nitrosamine CS-O-43222 37585-08-3 Enquire
(4R)-N-Nitroso Thiazolidine-4-carboxylic Acid ( Mix of isome... Nitrosamine CS-T-83005 86594-16-3 In Stock
(4S)-4-[(4-hydrazinophenyl)methyl]-3-nitroso-oxazolidin-2-on... Nitrosamine CS-O-43092 Not Available Discontinued
(E)-1-(4-methoxyphenyl)-2-nitrosodiazene Nitrosamine CS-O-59136 ---- Enquire
(Nitrosoimino)bisacetic Acid Diethyl Ester Nitrosamine CS-T-59633 5438-83-5 In Stock
(R)-1-benzyl-5-methyl-4-nitroso-1,4-diazepane Nitrosamine CS-O-46368 Not Available Enquire
(R)-1-nitrosopiperidin-3-amine (Mixture of Isomers) Nitrosamine CS-O-43338 Not Available In Stock
(R)-1-nitrosopyrrolidin-3-ol Nitrosamine CS-O-52541 153135-64-9 In Stock
(R)-5-methyl-2-(1-nitrosopiperidin-3-yl)isoindoline-1,3-dion... Nitrosamine CS-O-52664 Not Available Enquire
(R)-ethyl 2-(nitroso(1-phenylethyl)amino)acetate Nitrosamine CS-O-40452 2763812-26-4 In Stock
(R)-ethyl 3-nitrosothiazolidine-4-carboxylate Nitrosamine CS-O-51472 Not Available Enquire
(R)-Mavacamten N-Nitroso Impurity Nitrosamine CS-O-60063 ---- Enquire
(R)-Methotrexate N-nitroso Impurity Nitrosamine CS-O-46623 Not Available Enquire
(R)-Rivaroxaban Nitroso Impurity 5 Nitrosamine CS-O-58193 ---- Enquire
(R)-tert-Butyl (1-nitrosopiperidin-3-yl)carbamate (Mixture o... Nitrosamine CS-O-43337 ---- In Stock
(R)-tert-butyl nitroso(piperidin-3-yl)carbamate Nitrosamine CS-O-54844 Not Available Enquire
(R,S)-N-Nitroso Anabasine Nitrosamine CS-T-37172 37620-20-5 Enquire
(R,S)-N-Nitroso Anabasine HCl salt Nitrosamine CS-EO-03727 37620-20-5 (Freebase) Enquire
(R,S)-N-Nitroso Anatabine Nitrosamine CS-T-37181 887407-16-1 In Stock
(S)-1-(3-methyl-4-nitrosopiperazin-1-yl)prop-2-en-1-one Nitrosamine CS-O-45967 Not Available Enquire
(S)-1-bromo-3-(1-nitrosopyrrolidin-2-yl)imidazo[1,5-a]pyrazi... Nitrosamine CS-O-60468 ---- Enquire
(S)-1-bromo-8-chloro-3-(1-nitrosopyrrolidin-2-yl)imidazo[1,5... Nitrosamine CS-O-60469 ---- Enquire
(S)-1-Nitroso-5-oxopyrrolidine-2-carboxylic Acid Nitrosamine CS-O-60316 80754-96-7 Enquire
(S)-1-nitrosopyrrolidin-3-amine Nitrosamine CS-O-50397 Not Available Enquire
(S)-1-nitrosopyrrolidin-3-ol Nitrosamine CS-O-51233 1341219-46-2 In Stock
(S)-2,2,4-trimethyl-1-nitrosopyrrolidine Nitrosamine CS-O-52518 Not Available In Stock
(S)-2-benzyl-1-nitrosoaziridine Nitrosamine CS-O-53833 ---- Enquire
(S)-4-(8-amino-3-(1-nitrosopyrrolidin-2-yl)imidazo[1,5-a]pyr... Nitrosamine CS-O-53322 ----- Enquire
(S)-7-(1-acryloylpiperidin-4-yl)-4-nitroso-2-(4-phenoxypheny... Nitrosamine CS-O-56384 ---- Enquire
(S)-8-chloro-3-(1-nitrosopyrrolidin-2-yl)imidazo[1,5-a]pyraz... Nitrosamine CS-O-60470 ---- Enquire
(S)-N-((3-chloropyrazin-2-yl)methyl)-1-nitrosopyrrolidine-2-... Nitrosamine CS-O-60471 ---- Enquire
(S)-N-Nitroso Anabasine Nitrosamine CS-T-37171 1133-64-8 Enquire
(S)-N-Nitroso Anatabine Nitrosamine CS-T-37179 71267-22-6 Enquire
(Z)-ethyl 2-chloro-2-(2-(4-methoxyphenyl)-2-nitrosohydrazono... Nitrosamine CS-O-43008 Not Available Enquire
1-​(2,​4-​dioxo-​1,​2,​3,​4-​tetrahydropyrimidin-​5-​yl)​-​3... Nitrosamine CS-O-44380 89854-43-3 Enquire
1-(1,8-diethyl-9-nitroso-1,3,4,9-tetrahydropyrano[3,4-b]indo... Nitrosamine CS-O-52925 ---- Enquire
1-(1-nitrosopiperidin-4-yl)-1H-imidazo[4,5-b]pyridin-2(3H)-o... Nitrosamine CS-O-54299 ---- Enquire
1-(2-chloroethyl)-3,3-dicyclohexyl-1-nitrosourea Nitrosamine CS-O-47052 500545-48-2 Enquire
1-(3-(2-methoxy-5-nitrophenoxy)propyl)-4-nitrosopiperazine Nitrosamine CS-O-53957 ---- Enquire
1-(3-Methoxyphenyl)-4-nitrosopiperazine Nitrosamine CS-ED-42186 2763779-41-3 In Stock
1-(3-methyl-1-phenyl-1H-pyrazol-5-yl)-4-nitrosopiperazine Nitrosamine CS-O-46603 Not Available Enquire
1-(3-nitroso-2-thioxoimidazolidin-1-yl)ethanone Nitrosamine CS-O-54277 ---- Enquire
1-(4-bromo-2-((2,4-dimethylphenyl)thio)phenyl)-4-nitrosopipe... Nitrosamine CS-O-48937 Not Available Enquire
1-(4-chlorophenyl)-4-nitrosopiperazine Nitrosamine CS-O-53192 873395-52-9 In Stock
1-(4-methoxybenzyl)-2-nitrosodecahydroisoquinoline Nitrosamine CS-O-53829 ---- Enquire
1-(4-morpholinophenyl)-2-nitrosoguanidine Nitrosamine CS-O-54265 --- Discontinued
1,10-dinitrosodecahydrodiimidazo[1,2-a:2',1'-c]pyrazine Nitrosamine CS-O-53752 ---- Enquire
1,1-dimethyl-2-methylene-3-nitroso-2,3-dihydro-1H-benzo[e]in... Nitrosamine CS-O-49036 Not Available Enquire
1,2 Di-Nitroso-Hydrazine impurity Nitrosamine CS-O-46095 Not Available Enquire
1,2,3,6,-tetrahydro-1- nitroso4-picoline Nitrosamine CS-O-45591 89600-66-8 Enquire
1,4,7,10-Tetranitroso-1,4,7,10-tetraazacyclododecane Nitrosamine CS-O-53751 ---- Enquire
1,4-dinitroso-1,4-diazepane Nitrosamine CS-O-52780 55557-00-1 In Stock
1,4-Dinitrosopiperazine Nitrosamine CS-T-20729 140-79-4 In Stock
1′-Nitroso-1,4′-bipiperidine (Mixture of E/Z Isomers) Nitrosamine CS-O-50451 2639422-25-4 In Stock
10-nitroso-2-(trifluoromethyl)-10H-phenothiazine Nitrosamine CS-O-46491 Not Available Enquire
10-nitroso-2-(trifluoromethyl)-10H-phenothiazine 5-oxide Nitrosamine CS-O-53810 Not Available In Stock
14-O-Acetyl N-Nitroso Noroxycodone Nitrosamine CS-O-50239 Not Available Enquire
1-Acetyl-4-nitrosopiperazine Nitrosamine CS-EO-03243 73742-56-0 In Stock
1-Benzo[1,3]dioxol-5-ylmethyl-4-Nitroso piperazine Nitrosamine CS-O-52331 Not Available In Stock
1-Benzyl-4-nitrosopiperazine Nitrosamine CS-T-05844 40675-45-4 In Stock
1-cyano-1,2-dinitrosoguanidine Nitrosamine CS-O-57070 ---- Enquire
1-Cyclopentyl-4-nitrosopiperazine Nitrosamine CS-ED-01323 61379-66-6 In Stock
1-cyclopropylmethyl-4-nitrosopiperazine Nitrosamine CS-O-47823 Not Available In Stock
1-Deoxy-1-(methylnitrosoamino)hexitol Nitrosamine CS-ED-25892 62137-31-9 In Stock
1-ethyl-3-(3-(methyl(nitroso)amino)propyl)urea Nitrosamine CS-O-45136 Not Available Enquire
1-Ethyl-4-nitrosopiperazine Nitrosamine CS-ED-01202 65504-33-8 In Stock
1-methyl-2-nitroso-1H-benzo[d][1,2,3]triazol-2-ium Nitrosamine CS-O-54573 ---- Enquire
1-methyl-4-(1-nitrosohexahydropyridine-4-yl)piperazine Nitrosamine CS-O-57939 2089333-01-5 Enquire
1-methyl-4-nitroso-1,4-diazepane Nitrosamine CS-O-52778 65504-34-9 Enquire
1-Methyl-N-Nitrosodiethylamine (1mg/1ml in Methanol) Nitrosamine CS-O-39418 16339-04-1 In Stock
1-nitroso azepane Nitrosamine CS-O-54884 ---- Enquire
1-nitroso-1,4-diazepane Nitrosamine CS-O-52779 72782-14-0 In Stock
1-nitroso-1H-1,2,4-triazole Nitrosamine CS-O-41559 Not Available Enquire
1-nitroso-1H-benzimidazol-2-ol Nitrosamine CS-O-51660 Not Available Enquire
1-Nitroso-1H-benzo[d][1,2,3]triazole Nitrosamine CS-O-53753 23351-96-4 Enquire
1-nitroso-1H-benzotriazole Nitrosamine CS-O-45160 Not Available Enquire
1-Nitroso-1H-imidazole Nitrosamine CS-T-82856 1233340-45-8 In Stock
1-nitroso-1H-indazole-3-carboxylic acid Nitrosamine CS-O-39902 Not Available Enquire
1-Nitroso-1H-indole Nitrosamine CS-O-60323 117782-96-4 Enquire
1-Nitroso-1H-pyrrole Nitrosamine CS-O-43176 1233340-43-6 Enquire
1-Nitroso-2,2,6,6-Tetramethylpiperidine Nitrosamine CS-ED-01786 6130-93-4 In Stock


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitrosodiethylamine (NDEA) Secondary Standards CS-SS-25243-1GM 55-18-5 Enquire
1,2,3,6,7,11b-Hexahydro-2-nitroso-4H-pyrazino[2,1-a]isoquino... Secondary Standards CS-SS-26512 115822-46-3 Enquire
4-Nitroso-hydrochlorothiazide Secondary Standards CS-SS-26510-100MG 63779-86-2 Enquire
N-Nitroso-bisoprolol Secondary Standards CS-SS-26511-25MG 2820170-76-9 Enquire
N-Nitrosodibutylamine (NDBA) Secondary Standards CS-SS-26175-1ML 924-16-3 Enquire
N-Nitrosodiisopropylamine (NDIPA) Secondary Standards CS-SS-26174-1ML 601-77-4 Enquire
N-Nitrosoethylisopropylamine (NEIPA / NIPEA) Secondary Standards CS-SS-26176-1ML 16339-04-01 Enquire
N-Nitrosomethylaminobutyric Acid (NMBA) Secondary Standards CS-SS-26177-1ML 61445-55-4 Enquire
N-Nitrosomethylphenylamine (NMPA) Secondary Standards CS-SS-26178-1ML 614-00-6 Enquire


Deuterated Reagents

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Nitrosobis(2-hydroxyethyl)amine-d8 Deuterated Reagents CS-T-83802 1173019-53-8 In Stock
N-Nitroso Hexahydropyridine-d10 Deuterated Reagents CS-T-59646 960049-21-2 In Stock
N-nitrosodibutylamine D9 (Mixture of isomers) Deuterated Reagents CS-O-38112 Not Available In Stock
N-Nitrosodibutylamine-d18 (100µg/mL) in Methanol Deuterated Reagents CS-O-52235 1219798-82-9 In Stock
N-Nitrosodiethylamine-d10 Deuterated Reagents CS-T-93232 1219794-54-3 In Stock
N-Nitrosodiethylamine-d5 (mixture of isomers) Deuterated Reagents CS-O-38109 ---- In Stock
N-Nitrosodiisopropylamine D14 (1mg/1ml methanol) Deuterated Reagents CS-T-93684 601-77-4 (Unlabeled) In Stock
N-Nitroso-di-n-butylamine-d18 Deuterated Reagents CS-T-83361 1219798-82-9 In Stock
N-Nitrosodipropylamine-d14 Deuterated Reagents CS-T-83292 93951-96-3 In Stock
N-Nitrosoethylisopropylamine-d5 (Mixture of isomers) Deuterated Reagents CS-O-38110 2975202-10-7 In Stock
N-Nitrosomethylethylamine-D5 (Mixture of Isomers) Deuterated Reagents CS-O-37294 69278-56-4 In Stock
N-Nitrosomorpholine D4 Deuterated Reagents CS-T-59546 61578-30-1 In Stock
p-(Dimethyl-d6-amino)nitrosobenzene Deuterated Reagents CS-T-52196 1398065-85-4 In Stock


Analytical Standard

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-Cyclopentyl-4-nitrosopiperazine Analytical Standard CS-ED-01323-10MG 61379-66-6 Enquire
1-cyclopentyl-4-nitroso-piperazine (CPNP)-100 PPM in Acetoni... Analytical Standard CS-ED-01323-1.5ML 61379-66-6 Enquire
1-methyl-4-nitrosopiperazine (MNP)-100 PPM in Acetonitrile Analytical Standard CS-T-81242-1.5ML 16339-07-4 Enquire
56-​nitroso-Vancomycin Analytical Standard CS-O-41271-10MG 155386-25-7 Enquire
Abacavir Nitroso Impurity Analytical Standard CS-EO-01028-10MG ---- Enquire
Benzonatate Nitroso Impurity Analytical Standard CS-EO-02109-10MG Not Available Enquire
Bisoprolol Impurity 11 (mixture of isomers) (N-Nitroso Bisop... Analytical Standard CS-EO-01017-10MG 2820170-76-9 Enquire
Elagolix Nitroso Impurity Analytical Standard CS-EO-01535-10MG ---- Enquire
Finerenone Nitroso Impurity Analytical Standard CS-EO-02896-10MG ---- Enquire
Frovatriptan Nitroso Impurity 2 Analytical Standard CS-EO-02835-10MG ---- Enquire
Ivacaftor Nitroso Impurity Analytical Standard CS-EO-02073-10MG Not Available Enquire
Levofolinic Acid Nitroso Impurity 1 Analytical Standard CS-EO-03157-10MG Not Available Enquire
Mononitroso Ethambutol Analytical Standard CS-O-47264-10MG ---- Enquire
N-((2-isopropylthiazol-4-yl)methyl)-N-methylnitrous amide (N... Analytical Standard CS-O-41311-1.5ML ---- Enquire
N10-Nitroso Folic Acid Analytical Standard CS-ED-01783-10MG 26360-21-4 Enquire
N8-Nitroso Folinic acid (Leucovorin) Analytical Standard CS-O-49296-10MG ---- Enquire
N-Desmethyl N-Nitroso (Z)-Doxepin Analytical Standard CS-O-48152-10MG Not Available Enquire
N-desmethyl N-Nitroso Cabergoline Analytical Standard CS-O-46343-10MG ---- Enquire
N-Desmethyl N-Nitroso Dexchlorpheniramine Analytical Standard CS-O-46572-10MG Not Available Enquire
N-Desmethyl N-nitroso Tapentadol Analytical Standard CS-O-41473-10MG ---- Enquire
N-desmethyl-N-nitroso-Chlorpromazine Impurity Analytical Standard CS-EO-03136-10MG 55855-44-2 Enquire
N-desmethyl-N-nitroso-methylene blue Analytical Standard CS-O-47878-10MG Not Available Enquire
N-dinitroso bicisate Analytical Standard CS-O-49871-10MG Not Available Enquire
Nitroso-STG-19 (Sitagliptin) Analytical Standard CS-EO-01520-10MG 2892260-32-9 Enquire
Nizatidine Nitroso Impurity 1 Analytical Standard CS-O-47736-10MG ---- Enquire
Nizatidine Nitroso Impurity 2 Analytical Standard CS-O-47735-10MG ---- Enquire
N-Methyl-N’-nitrosopiperazine Analytical Standard CS-T-81242-10MG 16339-07-4 Enquire
N-Nitroso Acarbose (Mixture of Isomers) Analytical Standard CS-O-38889-10MG Not Available Enquire
N-Nitroso Amlodipine Analytical Standard CS-O-38884-10MG ---- Enquire
N-Nitroso Arformoterol Analytical Standard CS-O-47938-10MG Not Available Enquire
N-Nitroso Articaine Analytical Standard CS-O-45258-10MG Not Available Enquire
N-Nitroso Belumosudil Analytical Standard CS-EO-03257-10MG Not Available Enquire
N-Nitroso Benazepril Analytical Standard CS-P-08855-10MG Not Available Enquire
N-Nitroso Bendroflumethiazide Analytical Standard CS-O-38960-10MG Not Available Enquire
N-nitroso berotralstat Analytical Standard CS-O-49867-10MG Not Available Enquire
N-nitroso brilliant blue g Analytical Standard CS-O-49872-10MG Not Available Enquire
N-Nitroso Brinzolamide Analytical Standard CS-O-38965-10MG Not Available Enquire
N-nitroso Cangrelor Analytical Standard CS-O-38968-10MG ---- Enquire
N-nitroso Carteolol Analytical Standard CS-O-38985-10MG Not Available Enquire
N-Nitroso Carvedilol Analytical Standard CS-EO-01194-10MG 2248746-67-8 Enquire
N-Nitroso Chloroquine Analytical Standard CS-O-38897-10MG Not Available Enquire
N-Nitroso Ciprofloxacin Analytical Standard CS-O-38360-10MG 864443-44-7 Enquire
N-nitroso Clevidipine Analytical Standard CS-O-38996-10MG ---- Enquire
N-Nitroso Clozapine Analytical Standard CS-O-38912-10MG 156632-03-0 Enquire
N-Nitroso Dabigatran Etexilate Analytical Standard CS-O-38916-10MG 2892260-29-4 Enquire
N-Nitroso Desloratadine Analytical Standard CS-T-59617-10MG 1246819-22-6 Enquire
N-Nitroso Desmethyl Almotriptan impurity Analytical Standard CS-O-41023-10MG Not Available Enquire
N-Nitroso Desmethyl Azithromycin Analytical Standard CS-EO-01214-10MG ---- Enquire
N-Nitroso Desmethyl Bedaquiline Analytical Standard CS-O-48475-10MG Not Available Enquire
N-Nitroso Desmethyl Cyclobenzaprine Analytical Standard CS-EO-02611-10MG ---- Enquire
N-nitroso Desmethyl Minocycline 1 Analytical Standard CS-O-47994-10MG Not Available Enquire
N-Nitroso Desmethyl Nizatidine Analytical Standard CS-O-49901-10MG ---- Enquire
N-Nitroso Desmethyl Omadacycline-1 Analytical Standard CS-O-52815-10MG ---- Enquire
N-Nitroso Desmethyl Omadacycline-2 Analytical Standard CS-O-52816-10MG ---- Enquire
N-Nitroso Desmethyl Pheniramine Analytical Standard CS-O-44572-10MG ---- Enquire
N-Nitroso Desmethyl Propoxyphene Analytical Standard CS-O-49903-10MG ---- Enquire
N-Nitroso Desmethyl Pyrilamine Analytical Standard CS-O-48934-10MG ---- Enquire
N-Nitroso Desmethyl Ranitidine Analytical Standard CS-O-49925-10MG ---- Enquire
N-Nitroso desmethyl Rizatriptan impurity Analytical Standard CS-O-41025-10MG ---- Enquire
N-Nitroso Desmethyl Sarecycline Analytical Standard CS-O-50063-10MG ---- Enquire
N-Nitroso Desmethyl Sumatriptan impurity Analytical Standard CS-O-41022-10MG ---- Enquire
N-Nitroso Desmethyl Tamoxifen (Mixture of Isomers) Analytical Standard CS-O-45155-10MG ---- Enquire
N-Nitroso Desmethyl Telithromycin Analytical Standard CS-O-50064-10MG ---- Enquire
N-Nitroso Desmethyl Thonzylamine Analytical Standard CS-O-50065-10MG ---- Enquire
N-Nitroso Desmethyl Trimethobenzamide Analytical Standard CS-O-50066-10MG ---- Enquire
N-Nitroso Desmethyl Trimipramine Analytical Standard CS-O-50049-10MG Not Available Enquire
N-nitroso desmethyl-carbinoxamine Analytical Standard CS-O-49876-10MG Not Available Enquire
N-nitroso desmethyl-chlophedianol Analytical Standard CS-O-49877-10MG Not Available Enquire
N-nitroso desmethyl-demeclocycline Analytical Standard CS-O-49878-10MG Not Available Enquire
N-nitroso desmethyl-dexbrompheniramine Analytical Standard CS-O-49879-10MG ---- Enquire
N-nitroso desmethyl-eravacycline Analytical Standard CS-O-49880-10MG Not Available Enquire
N-nitroso desmethyl-maralixibat Analytical Standard CS-O-49881-10MG Not Available Enquire
N-nitroso desmethyl-mifepristone Analytical Standard CS-O-49900-10MG ---- Enquire
N-nitroso Deucravacitinib Analytical Standard CS-EO-03258-10MG ---- Enquire
N-Nitroso dipivefrin Analytical Standard CS-O-50067-10MG Not Available Enquire
N-Nitroso Dorzolamide Analytical Standard CS-O-38645-10MG ---- Enquire
N-Nitroso duvelisib Analytical Standard CS-O-50068-10MG Not Available Enquire
N-Nitroso Enalapril [Mixture of isomers] Analytical Standard CS-O-38908-10MG ---- Enquire
N-Nitroso Enalaprilat Analytical Standard CS-O-38867-10MG Not Available Enquire
N-nitroso Epinephrine Analytical Standard CS-O-39069-10MG Not Available Enquire
N-Nitroso Erythromycin EP Impurity B Analytical Standard CS-EO-02640-10mg ---- Enquire
N-Nitroso Esmolol (Mixture of isomer) Analytical Standard CS-O-39073-10MG Not Available Enquire
N-nitroso Etravirine Analytical Standard CS-O-39078-10MG ---- Enquire
N-nitroso Exametazime Analytical Standard CS-EO-03259-10MG Not Available Enquire
N-Nitroso Fenoldopam Analytical Standard CS-EO-01265-10MG Not Available Enquire
N-Nitroso Flecainide Analytical Standard CS-O-38891-10MG 2901109-58-6 Enquire
N-Nitroso florbetaben f-18 Analytical Standard CS-O-50075-10MG Not Available Enquire
N-Nitroso florbetapir f-18 Analytical Standard CS-O-50076-10MG Not Available Enquire
N-Nitroso flutemetamol f-18 Analytical Standard CS-O-50077-10MG Not Available Enquire
N-nitroso Formoterol Analytical Standard CS-O-39089-10MG Not Available Enquire
N-nitroso Gatifloxacin Analytical Standard CS-EO-01192-10MG ---- Enquire
N-Nitroso Isopropyl Ethyl Amine Analytical Standard CS-ED-00207-10MG 16339-04-1 Enquire
N-Nitroso isoproterenol Analytical Standard CS-EO-01260-10MG Not Available Enquire
N-nitroso Leniolisib Analytical Standard CS-EO-03260-10MG Not Available Enquire
N-Nitroso levamlodipine Analytical Standard CS-O-50069-10MG ---- Enquire
N-Nitroso levmetamfetamine Analytical Standard CS-O-50070-10MG Not Available Enquire
N-nitroso Lisinopril Analytical Standard CS-O-39104-10MG 519175-80-5 Enquire
N-Nitroso Maribavir Analytical Standard CS-EO-03263-10MG ---- Enquire
N-Nitroso Mecamylamine Analytical Standard CS-O-50074-10MG 24215-20-1 Enquire
N-Nitroso meclofenamic acid Analytical Standard CS-O-50073-10MG Not Available Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,3-Bis(2-chloroethyl-d4)-1-nitrosourea Stable Isotope Reagent CS-C-00471 154-93-8 (unlabelled) Enquire
1-Cyclopentyl-4-nitrosopiperazine-D8 Stable Isotope Reagent CS-O-45510 Not Available Enquire
1-Cyclopentyl-4-Nitrosopiperazine-d9 Stable Isotope Reagent CS-O-45509 Not Available In Stock
1-Methyl-4-nitrosopiperazine-D8 Stable Isotope Reagent CS-O-45508 Not Available Enquire
1-Nitrosopyrrolidine-d4 Stable Isotope Reagent CS-T-59649 57371-40-1 In Stock
N-(Methyl-d3)-N-Nitrosopiperazine Stable Isotope Reagent CS-T-80092 1184974-41-1 In Stock
N-Nitroso Tofacitinib Amine Impurity-d5 Stable Isotope Reagent CS-O-54128 Not Available In Stock
N-Nitrosobenzylmethyl-d3-Amine Stable Isotope Reagent CS-C-00464 62845-80-1 In Stock
N-Nitrosodi-Isopropyl-d14 Amine Stable Isotope Reagent CS-C-01603 2975202-11-8 In Stock
N-nitroso-N-methylaniline-d5 200μg/mL in Methanol Stable Isotope Reagent CS-O-40721 Not Available Enquire
(R,S)-N’-Nitrosonornicotine-13C6 Stable Isotope Reagent CS-T-95750 2726380-44-3 Enquire
1-methyl-4-nitrosopiperazine-d11 200μg/mL in Methanol Stable Isotope Reagent CS-O-40717 16339-07-4(Unlabelled) Enquire
1-methyl-4-nitrosopiperazine-d4 200μg/mL in Methanol Stable Isotope Reagent CS-O-40719 756524-88-6 Enquire
6-Amino-5-nitroso-3-methyluracil-d3 Stable Isotope Reagent CS-T-66292 1246819-56-6 Enquire
N-nitrosoethylisopropyl amine-d5 200μg/mL in Methanol Stable Isotope Reagent CS-O-40714 2975202-10-7 Enquire
N-nitrosomorpholine-d8 200μg/mL in Methanol Stable Isotope Reagent CS-O-40722 Not Available Enquire
N-Nitroso-N-[(2,4,6-D3)phenyl](2,4,6-D3)aniline Stable Isotope Reagent CS-BX-00360 93951-95-2 Enquire
N-nitroso-N-methylaniline 200μg/mL in Methanol Stable Isotope Reagent CS-O-40720 Not Available Enquire
N-nitrosopiperidine 200μg/mL in Methanol Stable Isotope Reagent CS-O-40726 Not Available Enquire
N-nitroso-varenicline 200μg/mL in Methanol Stable Isotope Reagent CS-O-40723 Not Available Enquire
N-nitrosovarenicline-d12 200μg/mL in Methanol Stable Isotope Reagent CS-O-40724 Not Available Enquire


Polymers

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N- Nitroso Pazopanib Impurity 10 Polymers CS-O-49751 Not Available Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,4-Dinitrosobenzene Building Blocks CS-O-52112 105-12-4 Enquire
2,6-Dichloronitrosobenzene Building Blocks CS-O-55351 1194-66-7 Enquire
6-Amino-1,3-dipropyl-5-nitrosouracil Building Blocks CS-T-02522 81250-33-1 Enquire