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

Oxiran Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(2R,3S)-rel-3-Hexyl-2-oxiranenonanoic acid methyl ester-d3 Stable Isotopes CS-T-97463 Not Available Enquire
(2S,3S)-3-[[[(1S)-1-[[(4-Azidobutyl)amino]carbonyl]-3-methyl... Stable Isotopes CS-T-100979 Not Available Enquire
[(1S)-3-Methyl-1-[[(2S)-2-methyloxiranyl]carbonyl]butyl]-car... Stable Isotopes CS-T-100022 Not Available Enquire
1-(5-(Benzyloxy)-2-(oxiran-2-ylmethoxy)phenyl)-3-phenyl-d5-p... Stable Isotopes CS-T-101830 Not Available Enquire
1,2,3,4-Tetrahydro-5-(2-oxiranylmethoxy)-(2R,3S)-rel-2,3-nap... Stable Isotopes CS-T-102038 Not Available Enquire
2-​[[Hydroxy[(2R)​-​2-​oxiranylmethoxy]​phosphinyl]​oxy]​-​N... Stable Isotopes CS-T-100193 Not Available Enquire
3-Benzyloxy-4-oxiranylmethyl-d5-9H-carbazole N-Carboxylic Ac... Stable Isotopes CS-T-100782 Not Available Enquire
4-(2-Oxiranylmethoxy)benzoic Acid 2-(1-Methylethoxy)ethyl Es... Stable Isotopes CS-T-99920 Not Available Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(2S,2'R)-6-Fluoro-2-(2'-oxiranyl)chromane Impurity CS-T-76125 197706-51-7 Enquire
(E)-decyl 4-((2S,3R,4R,5S)-3,4-dihydroxy-5-(((2S,3S)-3-((2S,... Impurity CS-T-93600 153900-96-0 Enquire
(R)-2-amino-4-methyl-1-((R)-2-methyloxiran-2-yl)pentan-1-one... Impurity CS-O-40365 2443766-79-6 Enquire
(R)-4-methyl-N-((R)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2... Impurity CS-O-60949 ---- Enquire
(R)-6-Benzyloxy-8-(oxiran-2-yl)-4H-benzo[1,4]oxazin-3-one Impurity CS-K-00284 869478-12-6 Enquire
(R)-8-(Benzyloxy)-5-(oxiran-2-yl)quinolin-2(1H)-one Impurity CS-O-32271 173140-90-4 In Stock
2-((2-naphthyloxy)methyl)-oxiran Impurity CS-T-96071 5234-06-0 Enquire
2-({2-Chloro 1-[(1-naphthyloxy)methyl]ethoxy}methyl) oxirane Impurity CS-O-45955 Not Available Enquire
2-(1-chloro-4-hydroxyisoquinoline-3-carboxamido)oxirane-2-ca... Impurity CS-O-46710 Not Available Enquire
2-(oxiran-2-yl)chromane Impurity CS-EO-03981 99199-99-2 Enquire
2-[1-(Chloromethyl)-2-chloroethoxymethyl]oxirane Impurity CS-ED-02506 23916-49-6 Enquire
3-(3,4-dimethoxyphenyl)-2-methyloxirane-2-carboxamide Impurity CS-O-44094 Not Available Enquire
Bicalutamide Oxirane Impurity Impurity CS-T-13775 90357-51-0 In Stock
BSP oxirane methyl ether impurity Impurity CS-O-57513 57726-04-2 Enquire
Des methyloxiranpentanone Carfilzomib Impurity CS-O-54350 ---- Enquire
methyl 3-(3,4-dimethoxyphenyl)-2-methyloxirane-2-carboxylate Impurity CS-O-44093 13605-37-3 Enquire
tert-Butyl ((S)-2-(3,5-difluorophenyl)-1-((S)-oxiran-2-yl)et... Impurity CS-ED-41447 388071-27-0 Enquire
(R)-2-amino-4-methyl-1-((S)-2-methyloxiran-2-yl)pentan-1-one Impurity CS-O-37223 2049023-89-2 Enquire
(R)-Benzyloxymethyl-oxirane Impurity CS-AC-12198 14618-80-5 Enquire
(S)-Methyloxirane Impurity CS-T-81127 16088-62-3 Enquire
[[4-[2-(Cyclopropylmethoxy)ethyl]phenoxy]methyl]oxirane Impurity CS-T-14040 63659-17-6 Enquire
1,1-Dimethyloxirane Impurity CS-T-53689 558-30-5 Enquire
2-((1-((S)-2-(2,4-difluorophenyl)oxiran-2-yl)vinyl)oxy)tetra... Impurity CS-O-33179 Not Available Enquire
4-(2-Oxiranylmethoxy)benzoic Acid 2-(1-Methylethoxy)ethyl Es... Impurity CS-T-84792 1346603-05-1 Enquire
4-[(2R)-Oxiranylmethoxy]benzenepropanoic Acid Methyl Ester Impurity CS-T-84179 246219-23-8 Enquire
4-[(2S)-Oxiranylmethoxy]benzenepropanoic Acid Methyl Ester Impurity CS-T-84908 112805-58-0 Enquire
Exemestane α-Spirooxirane Impurity CS-O-14933 184972-12-1 Enquire
Exemestane β-Spirooxirane Impurity CS-O-14934 152764-31-3 Enquire
Methyl 3-(4-methoxyphenyl)-2-methyloxirane-2-carboxylate Impurity CS-O-41700 92119-04-5 Enquire
N-[(1S)-3-Methyl-1-[[(2R)-2-Methyl-2-oxiranyl]carbonyl]butyl... Impurity CS-O-11241 247068-82-2 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(2R)-2-Amino-4-methyl-1-[(2R)-2-methyl-2-oxiranyl]-1-pentano... Intermediate CS-O-51220 2049023-98-3 Enquire
(R)-(3-Chlorophenyl)oxirane Intermediate CS-O-57673 62600-71-9 Enquire
(S)-2-amino-4-methyl-1-((S)-2-methyloxiran-2-yl)pentan-1-one Intermediate CS-O-51221 1528769-13-2 Enquire
2-Chloro-1-[[(2R)-2-methyloxiranyl]methyl]-4-nitro-1H-imidaz... Intermediate CS-T-71874 681490-93-7 In Stock
2-Methyl-5-nitro-1-(2-oxiranylmethyl)-1H-imidazole Intermediate CS-T-80898 16773-52-7 In Stock
N-(oxiran-2-ylmethyl)propan-2-amine Intermediate CS-ED-41640 6452-58-0 Enquire
N,N-bis(oxiran-2-ylmethyl)propan-2-amine Intermediate CS-ED-41641 19115-57-2 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-Butyl oxirane-2-carboxylate Fine Chemicals CS-O-53765 118623-63-5 Enquire
(S)-oxirane-2-carboxylic acid Fine Chemicals CS-O-53764 114990-90-8 Enquire
2-((4-((2-ethoxyethoxy)methyl)phenoxy)methyl)oxirane Fine Chemicals CS-O-54316 ---- Enquire
2-(2,4-Dichlorophenyl)oxirane Fine Chemicals CS-O-60143 13692-15-4 Enquire
4-(2-Oxiranylmethoxy)benzeneethanol Fine Chemicals CS-T-38203 104857-48-9 Enquire
Methyloxiranone Fine Chemicals CS-O-54013 50403-36-6 Enquire
(2S,3S)-Diethyl oxirane-2,3-dicarboxylate Fine Chemicals CS-MM-45301 73890-18-3 Enquire
1-[[(2S,3S)-3-(2-chlorophenyl)-2-(4-fluorophenyl)oxiran-2-yl... Fine Chemicals CS-ZJ-01109 106325-08-0 Enquire
Dimethyldioxirane Fine Chemicals CS-ED-01026 74087-85-7 Enquire
tert-butyl N-[(1S)-2-[4-(benzyloxy)phenyl]-1-[(2R)-oxiran-2-... Fine Chemicals CS-O-37285 126410-47-7 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
9-Nitroso-4-(oxiran-2-ylmethoxy)-9H-carbazole Nitrosamine CS-O-48845 Not Available Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-2-(3,4-Difluorophenyl)oxirane Building Blocks CS-O-46596 1006376-63-1 Enquire
2-(Phenoxymethyl)oxirane Building Blocks CS-T-39316 122-60-1 In Stock
4-(2-Oxiranylmethoxy)-1-naphthalenol Building Blocks CS-O-48135 1895849-17-8 Enquire
Dimethyl oxirane-2,3-dicarboxylate Building Blocks CS-O-44384 63119-87-9 Enquire