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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for --, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our -- 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 ---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.

-- Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-(Perfluorohexyl)ethane-1-sulfonic Acid Sodium Salt--13C2 Stable Isotopes CS-T-102901 2708218-89-5 Enquire
2-Methyl-d3--2-(thiophen-2-yl)malonic Acid Stable Isotopes CS-T-99158 Not Available Enquire
3-Bromo-p-terphenyl--D13 Stable Isotopes CS-O-42597 2705876-20-4 Enquire
Androstenediol Sulfate---d3 Stable Isotopes CS-O-58037 73609-45-7 (Freebase) Enquire
Carvedilol-d3 N--ß-D-Glucuronide Stable Isotopes CS-T-98486 Not Available Enquire
N--[4-(1-Methylethyl)benzoyl]-D-phenylalanine-d7 Stable Isotopes CS-T-100034 Not Available Enquire
Androst-16-en--3β-ol 2,2,3,4,4-d5 Stable Isotopes CS-T-95203 Not Available Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
D-Manno--lactam API CS-T-57408 62362-63-4 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
17b--Hydroxy Exemestane Metabolite CS-O-14324 122370-91-6 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3,3'-((2-(2-methoxyphenoxy)ethyl)azanediyl)bis(1-((9H-carbaz... Impurity CS-O-07545 918903-20-5 In Stock
Desogestrel (S) Peroxy Degradation Impurity--1 Impurity CS-O-59656 ---- Enquire
(+)-(1R,2R,5R)--Ethyl [(2-Hydroxypinan-3-ylene)amino]acetate Impurity CS-T-75725 90473-01-1 Enquire
(2R,3S)-2,3,4-Trihydroxy--butyrolactone 2,3-Cyclohexyl Ketal Impurity CS-T-62389 186803-48-5 Enquire
(2R,3S)-2,3-Dihydroxy-4-isopropoxy--butyrolactone Cyclohexyl... Impurity CS-T-52941 186790-80-7 Enquire
(a-R)-a--[[(1,1-dimethylethoxy)carbonyl]amino]-3-hydroxy-Tri... Impurity CS-DV-00434 1334321-39-9 Enquire
(a-R)-a--methyl-5-(2,2,2-trifluoroethoxy)-2-Pyridinemethanam... Impurity CS-DV-00435 953780-33-1 Enquire
(a-S)-3-chloro-5-fluoro-a--methyl-Benzenemethanamine Impurity CS-DV-00436 1241678-48-7 Enquire
(E)-2-bromo-6-(3-(pyrrolidin-1-yl)-1--tolylprop-1-enyl)pyrid... Impurity CS-O-10682 1246857-70-4 Enquire
2-Fluoro--5-pyrrolidinomethylphenylboronic acid, pinacol est... Impurity CS-T-76505 1486485-42-0 Enquire
4-methoxy-a--methyl-2-Pyridinemethanamine Impurity CS-DV-02858 58088-65-6 Enquire
Atazanavir (Cyclized N--formyl hydantoin Impurity CS-O-41446 Not Available Enquire
Benzydamine for system suitability CRS (Containing impuritie... Impurity CS-EG-03449 ---- Enquire
N,N-Bis(1-methylethyl)--phenoxybenzenepropanamine Impurity CS-T-49378 49871-26-3 Enquire
N,N-Dibenzyloxycarbonyl-S,O,O-tri-benzyl-L--glutamyl-L-cyste... Impurity CS-T-52448 1356930-78-3 Enquire


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Trans-3'-Hydroxycotinine-O-(4-deoxy-4,5-didehydro)--D-glucur... Glucuronide CS-T-55905 1217540-34-5 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1-Methyl-1H-benzotriazol-5-yl)methanol Fine Chemicals CS-ED-42036 120321-72-4 Enquire
(3aR,4R,7S,7aR)- hexahydro--4,7-Methano-1H-isoindole-1,3(2H)... Fine Chemicals CS-O-36148 1928713-81-8 Enquire
2,3-Bis[(acetyloxy)methyl]-1-oxoquinoxalin--1-ium-4(1H)-olat... Fine Chemicals CS-MM-36163 10103-89-6 Enquire
3-(pentafluoroethoxy)aniline Fine Chemicals CS-O-52269 717-84-0 Enquire
8-(1-Benzothiophen-4--yl)-8-aza-5-azoniaspiro[4,5]decane:chl... Fine Chemicals CS-ZH-30949 2143944-64-1 Enquire
Ethyl3-[1-(2,6--Dichlorobenzoyl)pyrrol-2-yl]prop-2-enoate Fine Chemicals CS-O-37045 95883-17-3 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso-N-Methyl--aminobutric acid 200g/mL in methanol Nitrosamine CS-O-54095 61445-55-4 Enquire


OLED

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Iron (Fe) Pure Standard, 10,000 μg/mL, 5% HNO3, 125 mL OLED N9304113 ---- Enquire


Carbohydrates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Methylumbelliferyl 6-Sulfo-2-acetamido-2-deoxy--a-D-Glucop... Carbohydrates CS-T-58785 210357-37-2 Enquire
Beta-D-GlcNAc tetraacetate Carbohydrates CS-CA-00179 14086-90-9 Enquire
Butyl 2-(acetylamino)-2-deoxy-β-D-glucopyranoside 3,4,6... Carbohydrates CS-CA-00130 155197-37-8 Enquire
Ethyl 3-O-benyl-4,6-O-[(R)-phenylmethylene]-1-thio-a-D-Manno... Carbohydrates CS-T-77283 123212-53-3 Enquire
Fuc-GM1 Carbohydrates CS-O-50678 Not Available Enquire


Deuterated Reagents

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Methyl 2-Hydroxy-2-Methyl-d3-propionate--d3 Deuterated Reagents CS-O-42174 40662-44-0 Enquire


Analytical Standard

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-nitroso-desmethyl-doxepin, (e)--100 PPM in Acetonitrile Analytical Standard CS-O-47993-1.5ML Not Available Enquire


Catalyst

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
lithium tetrafluoroborate--ultra dry, powder, 99.99% trace m... Catalyst CS-BX-02757 14283-07-9 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fmoc--aminobutyric acid Building Blocks CS-M-29527 116821-47-7 Enquire
Fmoc--carboxy-D-glutamic acid ,-di-t-butyl ester Building Blocks CS-M-29549 111662-65-8 Enquire
Fmoc--methylene-DL-glutamic acid Building Blocks CS-M-29550 1219174-57-8 Enquire
L--Glutamyl-L-cysteinyl Glutathione Building Blocks CS-T-55371 90663-73-3 Enquire
N-tert-Butyloxycarbonyl-L--glutamyl-L-glutamic Acid 1-Benzyl... Building Blocks CS-T-50163 935441-43-3 Enquire