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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:5'-Deoxy-5-fluoro-N4-(isopentyloxycarbonyl)cytidine
- CAS:162204-30-0
- MF:C15H22FN3O6
- Chemical Name:Benazepril Related Compound F
- CAS:
- MF:
- Structure:
- Chemical Name:4-(2-Cyanophenyl)benzaldehyde
- CAS:135689-93-9
- MF:C14H9NO
- Structure:
- Chemical Name:1,5-Benzothiazepin-4(5H)-one, 3-(acetyloxy)-5-[2-(dimethylamino)ethyl]-2,3-dihydro-2-(4-methoxyphenyl)-, (2S-trans)-
- CAS:111188-70-6
- MF:C22H26N2O4S
- Structure:
- Chemical Name:1H-Benzimidazole-2-sulfinicacid(9CI)
- CAS:58536-71-3
- MF:C7H6N2O2S
- Structure:
- Chemical Name:1(3H)-Isobenzofuranone,3-methyl-(9CI)
- CAS:3453-64-3
- MF:C9H8O2
- Structure:
- Chemical Name:3-ETHOXY-4-METHOXYBENZOIC ACID
- CAS:2651-55-0
- MF:C10H12O4
- Structure:
- Chemical Name:4-hydroxyurapidil
- CAS:88733-12-4
- MF:C20H29N5O4
- Structure:
- Chemical Name:2-chloro-4-nitrophenyl-N-acetylglucosaminide
- CAS:103614-82-0
- MF:C14H17ClN2O8
- Structure:
- Chemical Name:desisopropylprocaterol
- CAS:63483-95-4
- MF:C13H16N2O3
- Structure:
- Chemical Name:10-bromocarbamazepine
- CAS:59690-97-0
- MF:C15H11BrN2O
- Structure:
- Chemical Name:ethyl apovincaminate
- CAS:42971-12-0
- MF:C22H26N2O2
- Structure:
- Chemical Name:ALS 8123
- CAS:81148-15-4
- MF:C15H23NO4
- Structure:
- Chemical Name:Ro 14-7437
- CAS:78756-03-3
- MF:C15H15N3O3
- Structure:
- Chemical Name:3-(7,8-dimethoxy-2-oxo-1,2,4,5-tetrahydro-3H-benzo[d]azepin-3-yl)-N-(((S)-3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)-N-methylpropan-1-amine oxide
- CAS:2511244-97-4
- MF:C27H36N2O6
- Structure:
- Chemical Name:2,4,6,3',5'-pentamethoxybiphenyl
- CAS:84212-55-5
- MF:C17H20O5
- Chemical Name:Labetalol EP Impurity I
- CAS:
- MF:
- Chemical Name:(Asp4)-Carbetocin (Impurity G)
- CAS:
- MF:
- Chemical Name:SULPIRIDE IMPURITY B
- CAS:
- MF:
- Structure:
- Chemical Name:2-[(5-CARBOXY-4-METHOXY-3-METHYLPYRID-2-YL)-METHYLSULFO]-5-METHOXYBENZIMIDAZOLE
- CAS:120003-72-7
- MF:C17H17N3O5S
- Chemical Name:Gadobutrol Impurity 3
- CAS:
- MF:
- Chemical Name:Empagliflozin Impurity 84
- CAS:
- MF:
- Chemical Name:Iohexol Impurity O
- CAS:
- MF:
- Chemical Name:Avibactam sodium Impurity CES
- CAS:
- MF:
- Structure:
- Chemical Name:(2,5-dichlorophenyl)(4-ethoxyphenyl)methanone
- CAS:1097076-93-1
- MF:C15H12Cl2O2
- Structure:
- Chemical Name:Lenvatinib impurity LFZZ-10
- CAS:
- MF:C11H8Cl2N2O2
- Chemical Name:Febuxostat Impurity 98
- CAS:
- MF:
- Chemical Name:(2-(methyl((vinyloxy)carbonyl)amino)pyridin-3-yl)methyl 2-(methylamino)acetate hydrochloride
- CAS:
- MF:
- Structure:
- Chemical Name:1-(4-bromo-3,5-dimethoxyphenyl)ethanone
- CAS:1333472-28-8
- MF:C10H11BrO3
- Chemical Name:Ticagrelor Impurity 117
- CAS:
- MF:
- Chemical Name:Ticagrelor Impurity 136
- CAS:
- MF:
- Structure:
- Chemical Name:Phenol, 2-(diphenylmethyl)-5-methyl-
- CAS:411239-19-5
- MF:C20H18O
- Structure:
- Chemical Name:1-Cyclohexene-1-carboxylic acid, 4-(acetylamino)-3-(1-ethylpropoxy)-5-(formylamino)-, ethyl ester, (3R,4R,5S)-
- CAS:2148317-96-6
- MF:C17H28N2O5
- Structure:
- Chemical Name:Imidazo[5,1-f][1,2,4]triazin-4(1H)-one, 2-(5-chloro-2-ethoxyphenyl)-5-methyl-7-propyl-
- CAS:2245167-80-8
- MF:C17H19ClN4O2
- Structure:
- Chemical Name:Posaconazole impurity 18
- CAS:1819334-66-1
- MF:C44H49F2N8O4+
- Structure:
- Chemical Name:(4S,6R)-6-(2-(tert-butoxy)-2-oxoethyl)-2,2-dimethyl-1,3-dioxane-4-carboxylic acid
- CAS:2095786-11-9
- MF:C13H22O6
- Structure:
- Chemical Name:Crisaborole intermediate
- CAS:2354382-27-5
- MF:C14H8BCl2NO3
- Chemical Name:Ropivacaine Impurity 48
- CAS:
- MF:
- Structure:
- Chemical Name:2,4-Heptadienoic acid, 7-[2-(4-fluorophenyl)-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrol-1-yl]-, (2Z,4E)-
- CAS:1148131-09-2
- MF:C33H31FN2O3
- Structure:
- Chemical Name:2(3H)-Furanone, dihydro-4-(1-methylethyl)-, (4S)-
- CAS:53657-15-1
- MF:C7H12O2
- Structure:
- Chemical Name:Crisaborole Impurity 9 HCl
- CAS:1187187-01-4
- MF:C14H15BClNO3
- Structure:
- Chemical Name:Sulfamide, N-[5-(4-bromophenyl)-6-[2-[(5-chloro-2-pyrimidinyl)oxy]ethoxy]-4-pyrimidinyl]-N'-propyl-
- CAS:2443747-63-3
- MF:C19H20BrClN6O4S
- Structure:
- Chemical Name:methyl 3-oxo1,2-benzisothiazole-2(3H)-acetate 1,1-dioxide
- CAS:6639-62-9
- MF:C10H9NO5S
- Structure:
- Chemical Name:(6R-cis)-3-(hydroxymethyl)-7-methoxy-8-oxo-7-(2-thienylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
- CAS:54333-94-7
- MF:C15H16N2O6S2
- Structure:
- Chemical Name:5-acetyl-1,3-phenylene bis(dimethylcarbamate)
- CAS:81732-48-1
- MF:C14H18N2O5
- Chemical Name:Oseltamivir Impurity L
- CAS:
- MF:
- Structure:
- Chemical Name:1,4-Naphthalenediol, 2-methyl-, 4-acetate
- CAS:110327-29-2
- MF:C13H12O3
- Chemical Name:Oseltamivir Impurity 105
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 77
- CAS:
- MF:
- Chemical Name:Imidapril Impurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Betamethasone EP Impurity G
- CAS:85700-75-0
- MF:C22H30O5
- Chemical Name:Crisaborole Impurity ABCDEFGHJKL
- CAS:
- MF:
- Structure:
- Chemical Name:3-Azetidinecarboxylic acid, 1-[(4-acetyl-2-ethylphenyl)methyl]-
- CAS:2474774-17-7
- MF:C15H19NO3
- Structure:
- Chemical Name:2H-Indol-2-one, 3-[[3,5-dimethyl-4-(1-pyrrolidinylcarbonyl)-1H-pyrrol-2-yl]methylene]-5-fluoro-1,3-dihydro-
- CAS:2135339-43-2
- MF:C20H20FN3O2
- Chemical Name:Nicergoline Impurity 02
- CAS:
- MF:
- Chemical Name:Bromhexine ImpurityABCDEFGHJKL
- CAS:
- MF:
- Structure:
- Chemical Name:1-Butanone, 1-(4-fluorophenyl)-4-[(6bR,10aR)-2,3,6b,9,10,10a-hexahydro-3-methyl-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxalin-8(7H)-yl]-
- CAS:1576240-16-8
- MF:C24H28FN3O
- Chemical Name:impurity 37
- CAS:
- MF:
- Chemical Name:Aprepitant impurity 3
- CAS:
- MF:
- Structure:
- Chemical Name:1,4,7,10-Tetraazacyclododecane-1,4-diacetic acid
- CAS:229312-34-9
- MF:C12H24N4O4
- Structure:
- Chemical Name:Pentanoic acid, 3-(bromomethyl)-4-methyl-, ethyl ester, (3S)-
- CAS:2432911-38-9
- MF:C9H17BrO2
- Structure:
- Chemical Name:Imidazo[5,1-f][1,2,4]triazin-4(1H)-one, 2-[5-[(4-ethyl-1-piperazinyl)sulfonyl]-2-hydroxyphenyl]-5-methyl-7-propyl-
- CAS:2411340-39-9
- MF:C21H28N6O4S
- Structure:
- Chemical Name:3-Azetidineacetonitrile, 1-(ethylsulfonyl)-3-[4-[7-(hydroxymethyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-1H-pyrazol-1-yl]-
- CAS:1187595-89-6
- MF:C17H19N7O3S
- Structure:
- Chemical Name:4-methyl-N-(2-(methylamino)phenyl)-2-propyl-1H-benzo[d]imidazole-6-carboxamide
- CAS:884330-18-1
- MF:C19H22N4O
- Structure:
- Chemical Name:Benzeneacetic acid, 3-(2-amino-1,1-dimethyl-2-oxoethyl)-α,α-dimethyl-5-(1H-1,2,4-triazol-1-ylmethyl)-
- CAS:2469244-33-3
- MF:C17H22N4O3
- Structure:
- Chemical Name:2,4(1H,3H)-Pyrimidinedione, 5-(2-fluoro-3-methoxyphenyl)-1-[[2-fluoro-6-(trifluoromethyl)phenyl]methyl]-3-[(2R)-2-(hydroxyamino)-2-phenylethyl]-6-methyl-
- CAS:2486454-64-0
- MF:C28H24F5N3O4
- Structure:
- Chemical Name:3-Quinolinecarbonitrile, 4-[(2,4-dichloro-5-hydroxyphenyl)amino]-6-hydroxy-7-[3-(4-methyl-1-piperazinyl)propoxy]-
- CAS:2468737-94-0
- MF:C24H25Cl2N5O3
- Structure:
- Chemical Name:1H-Pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline, 2,3,6b,7,8,9,10,10a-octahydro-, (6bR,10aS)-
- CAS:313368-81-9
- MF:C13H17N3
- Structure:
- Chemical Name:Ergoline-8-methanol, 1,6-dimethyl-, (8β)- (9CI)
- CAS:40170-12-5
- MF:C17H22N2O
- Chemical Name:Avatrombopag Impurity 22
- CAS:
- MF:
- Chemical Name:Avatrombopag Impurity 33
- CAS:
- MF:
- Chemical Name:Cisatracurium besylate impurity 16
- CAS:
- MF:
- Structure:
- Chemical Name:1-ACETYL-2-METHYLBENZIMIDAZOLE
- CAS:14678-81-0
- MF:C10H10N2O
- Structure:
- Chemical Name:(E)-3-(2-Formylphenyl)-2-propenoic acid 1,1-dimethyl ethyl ester
- CAS:103890-69-3
- MF:C14H16O3
- Structure:
- Chemical Name:1H-Dibenz[e,g]indole-1-heptanoic acid, 9-fluoro-2,3-dihydro-β,δ-dihydroxy-3-(1-methylethyl)-2-oxo-3-[(phenylamino)carbonyl]-, (βR,δR)-
- CAS:1046533-62-3
- MF:C33H33FN2O6
- Chemical Name:Bimatoprost Impurity 22
- CAS:
- MF:
- Chemical Name:Bumetanide Impurity 9
- CAS:
- MF:
- Chemical Name:Crisaborole Impurity 14
- CAS:
- MF:
- Structure:
- Chemical Name:Benzonitrile, 4-[(1E)-4-(dimethylamino)-1-(4-fluorophenyl)-1-buten-1-yl]-3-(hydroxymethyl)-
- CAS:1370643-23-4
- MF:C20H21FN2O
- Chemical Name:Latamoxef impurity B
- CAS:
- MF:
- Structure:
- Chemical Name:(9alpha,13alpha,14alpha)-3-methoxymorphinan-17-carbaldehyde
- CAS:28973-48-0
- MF:C18H23NO2
- Structure:
- Chemical Name:(2R,4R)-5-(Biphenyl-4-yl)-4-[(tert-butoxycarbonyl)amino]-2-methylpentanoic acid
- CAS:1012341-56-8
- MF:C23H29NO4
- Chemical Name:Alogliptin Impurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Linagliptin Impurity D
- CAS:666816-91-7
- MF:C20H28N6O4
- Structure:
- Chemical Name:Parecoxib Impurity C
- CAS:3026677-40-4
- MF:
- Structure:
- Chemical Name:Rac Atomoxetine Hydrochloride
- CAS:82857-40-7
- MF:C17H22ClNO
- Structure:
- Chemical Name:3-(1H-imidazol-1-yl)-5-(trifluoromethyl)aniline
- CAS:943320-48-7
- MF:C10H8F3N3
- Structure:
- Chemical Name:Linagliptin Impurity H
- CAS:1646355-34-1
- MF:C22H23N7O2
- Structure:
- Chemical Name:Ezetimibe Impurity 54
- CAS:1185883-39-9
- MF:C40H36F2N2O5
- Structure:
- Chemical Name:2-(2-fluorophenyl)-1,3-di(1H-1,2,4-triazol-1-yl)propan-2-ol
- CAS:1348664-75-4
- MF:C13H13FN6O
- Chemical Name:Dapagliflozin Impurity 2
- CAS:
- MF:
- Chemical Name:Imatinib Impurity 1
- CAS:
- MF:
- Chemical Name:Imatinib Impurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:Nifedipine Impurity 3
- CAS:
- MF:C19H22N2O6
- Chemical Name:Riociguat Impurtiy 5
- CAS:
- MF:
- Chemical Name:Vonoprazan Impurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:Avibactam Impurity
- CAS:1797133-98-2
- MF:C7H12N3NaO6S
- Structure:
- Chemical Name:Citalopram EP Impurity E
- CAS:64169-47-7
- MF:C19H22Cl2FNO