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Pharmaceutical Impurity Reference Standards
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- Chemical Name:
- Dapoxetine Impurity A
- Structure:
- Chemical Name:
- Entecavir Impurity
- CAS:
- 1333204-94-6
- MF:
- C12H15N5O3
- Chemical Name:
- Gadobutrol Impurity
- Chemical Name:
- Lesinurad Impurity
- Chemical Name:
- Pramipexole Impurity G
- Structure:
- Chemical Name:
- Salmeterol EP Impurity A
- CAS:
- 1798014-51-3
- MF:
- C19H25NO3
- Chemical Name:
- Tacrolimus impurity D
- Structure:
- Chemical Name:
- 2-(2-(4-(2-(4-(1-(2-ethoxyethyl)-1H-benzo[d]imidazol-2-yl)piperidin-1-yl)ethyl)phenyl)propan-2-yl)-4,4-dimethyl-4,5-dihydrooxazole
- CAS:
- 202189-77-3
- MF:
- C32H44N4O2
- Chemical Name:
- Saxagliptin Impurity 6
- Structure:
- Chemical Name:
- Alcaftadine N-Oxide
- CAS:
- 952649-75-1
- MF:
- C19H21N3O2
- Structure:
- Chemical Name:
- Ethyl 4-(4-fluorophenyl)-1-methyl-2,6-dioxopiperidine-3-carboxylate
- CAS:
- 202534-94-9
- MF:
- C15H16FNO4
- Chemical Name:
- Tofacitinib Impurity H
- Structure:
- Chemical Name:
- 3',6'-Dehydroclindamycin
- CAS:
- 1440605-51-5
- MF:
- C18H31ClN2O5S
- Structure:
- Chemical Name:
- Iguratimod Impurity 5
- CAS:
- 84594-95-6
- MF:
- C13H11NO4
- Chemical Name:
- Cefradine Impurity F
- Structure:
- Chemical Name:
- Mirabegron Impurity
- CAS:
- 1684452-83-2
- MF:
- C26H28N6O3S2
- Structure:
- Chemical Name:
- 1-methyl-1H-indol-6-ol
- CAS:
- 130570-60-4
- MF:
- C9H9NO
- Structure:
- Chemical Name:
- 2-(2-Hydroxyphenyl)-4-methyl-5-thiazolecarboxylic acid ethyl ester
- CAS:
- 118485-48-6
- MF:
- C13H13NO3S
- Structure:
- Chemical Name:
- 32-Carboxycyanocobalamin
- CAS:
- 121483-62-3
- MF:
- C63H87CoN13O15P
- Chemical Name:
- Alvimopan Impurity 6
- Chemical Name:
- Acarbose Impurity B
- Chemical Name:
- Sofosbuvir Impurity28
- Chemical Name:
- Rivaroxaban Impurity 10
- Chemical Name:
- Ipragliflozin Impurity 1
- Structure:
- Chemical Name:
- (17α)-4-Bromo-17-hydroxy-3-oxo-19-norpregna-4,9-diene-21-nitrile
- CAS:
- 98149-13-4
- MF:
- C20H24BrNO2
- Structure:
- Chemical Name:
- 316173-27-0
- CAS:
- 316173-27-0
- MF:
- C17H28N2O5
- Structure:
- Chemical Name:
- Azilsartan Impurity
- CAS:
- 1821386-21-3
- MF:
- C22H18N4O4
- Structure:
- Chemical Name:
- Irbesartan impurity 7
- MF:
- C25H28N6O
- Chemical Name:
- Voriconazole Impurity 2
- Chemical Name:
- Safinamide Impurity 1
- Chemical Name:
- Caspofungin impurit 2
- Chemical Name:
- Lamivudine impurity 1
- Structure:
- Chemical Name:
- Raltitrexed Impurity 1
- CAS:
- 1378372-01-0
- MF:
- C10H10N2O2
- Structure:
- Chemical Name:
- Loratadine Impurity 6
- MF:
- C22H23ClN2O2
- Chemical Name:
- Mirabegron Impurity 3
- Chemical Name:
- Plerixafor Impurity C
- Chemical Name:
- Vonoprazan Impuirty 8
- Chemical Name:
- Sitagliptin IMpurity 4
- Chemical Name:
- Brexpiprazole Impurity1
- Chemical Name:
- Acarbose Impurity E
- Structure:
- Chemical Name:
- Alvimopan Impurity 1
- CAS:
- 2250243-53-7
- MF:
- C14H19NO
- Chemical Name:
- Febuxostat Impurity A
- Structure:
- Chemical Name:
- Fingolimod Hexyl Impurity
- CAS:
- 1201794-93-5
- MF:
- C17H29NO2
- Chemical Name:
- Palbociclib Impurity 1
- Chemical Name:
- Trelagliptin Impurity 8
- Structure:
- Chemical Name:
- Bromhexine Impurity H
- CAS:
- 63471-27-2
- MF:
- C14H21BrN2
- Structure:
- Chemical Name:
- Apixaban Impurity 17
- CAS:
- 1423803-24-0
- MF:
- C20H19N5O3
- Structure:
- Chemical Name:
- Rivaroxaban Impurity 11
- CAS:
- 1411775-06-8
- MF:
- C14H17N3O4
- Structure:
- Chemical Name:
- (R)-2-(3-(diisopropylamino)-1-phenylpropyl)-4-(hydroxymethyl)phenyl propionate
- MF:
- C25H35NO3
- Chemical Name:
- Flomoxef Impurity 4
- Chemical Name:
- Nicardipine Impurity 5
- Structure:
- Chemical Name:
- 11,11'-(PIPERAZINE-1,4-DIYL)-BIS-8-CHLORO-5H-DIBENZE[B,E][1,4]-DIAZEPINE
- CAS:
- 263366-81-0
- MF:
- C30H24Cl2N6
- Structure:
- Chemical Name:
- Sacubitril Impurity 7
- CAS:
- 149709-44-4
- MF:
- C22H25NO5
- Structure:
- Chemical Name:
- Valsartan Impurity 5
- CAS:
- 1266616-11-8
- MF:
- C18H21N5
- Structure:
- Chemical Name:
- 3-Hydroxy Agomelatine
- CAS:
- 166526-99-4
- MF:
- C15H17NO3
- Structure:
- Chemical Name:
- Milnacipran Impurity 4
- CAS:
- 1353644-49-1
- MF:
- C15H21NO2
- Structure:
- Chemical Name:
- (3S,5R)-Atorvastatin
- CAS:
- 887324-52-9
- MF:
- C33H35FN2O5
- Structure:
- Chemical Name:
- Heptyl Deoctyl Fingolimod Hydrochloride
- CAS:
- 745767-97-9
- MF:
- C18H31NO2
- Structure:
- Chemical Name:
- Tenofovir Fumarate
- CAS:
- 1246812-23-6
- MF:
- C21H34N5O9P
- Structure:
- Chemical Name:
- Prucalopride Impurity C
- CAS:
- 1599434-55-5
- MF:
- C17H24ClN3O3
- Structure:
- Chemical Name:
- 1-cyclopropyl-7-fluoro-8-methoxy-6-((4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
- CAS:
- 2205053-60-5
- MF:
- C21H24FN3O4
- Structure:
- Chemical Name:
- Brexpiprazole N-Oxide
- CAS:
- 1191900-58-9
- MF:
- C25H27N3O3S
- Structure:
- Chemical Name:
- 2,6-Dibenzyloxyacetophenone
- CAS:
- 3886-19-9
- MF:
- C22H20O3
- Structure:
- Chemical Name:
- ethyl(4aS,9bR)-6-bromo-1,3,4,4a,5,9b-hexahydro-2H-pyrido[4,3-b]indole-2-carboxylate
- CAS:
- 1059630-08-8
- MF:
- C14H17BrN2O2
- Structure:
- Chemical Name:
- diphenhydramine impurity
- MF:
- C17H21NO
- Structure:
- Chemical Name:
- Pyridine, 4-chloro-2-(chloromethyl)-3,5-dimethyl-, hydrochloride
- CAS:
- 143016-68-6
- MF:
- C8H10Cl3N
- Structure:
- Chemical Name:
- 1,1-dimethyl-4-(2-methyl-10H-benzo[b]thieno[2,3-e][1,4]diazepin-4-yl)piperazin-1-ium iodide
- MF:
- C18H23IN4S
- Structure:
- Chemical Name:
- 2-(4-butoxy-3-cyanophenyl)-4-methylthiazole-5-carboxylic acid
- CAS:
- 1657014-33-9
- MF:
- C16H16N2O3S
- Structure:
- Chemical Name:
- vildagliptin Impurity O
- CAS:
- 2253194-12-4
- MF:
- C12H18N4O2
- Structure:
- Chemical Name:
- methyl (41R,12S,13aR)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate
- CAS:
- 38990-17-9
- MF:
- C21H26N2O3
- Structure:
- Chemical Name:
- 1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethenamine
- CAS:
- 1450657-31-4
- MF:
- C12H17NO4S
- Chemical Name:
- Apremilast Impurity D
- Structure:
- Chemical Name:
- Canagliflozin Impurity 17
- CAS:
- 1951467-28-9
- MF:
- C24H23FO6S
- Chemical Name:
- Canagliflozin Impurity 22
- Chemical Name:
- Carfilzomib Impurity 3
- Chemical Name:
- Dolutegravir Impurity 4
- Chemical Name:
- Febuxostat Impurity 20
- Chemical Name:
- Lenvatinib Impurity 1
- Structure:
- Chemical Name:
- methyl (41S,12S,13aR)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate
- CAS:
- 83508-82-1
- MF:
- C21H26N2O3
- Structure:
- Chemical Name:
- 4-[6-[(8-cyclopentyl-6-ethenyl-7,8-dihydro-5-methyl-7-oxopyrido[2,3-d]pyrimidin-2-yl)amino]-3-pyridinyl]-1-piperazinecarboxylic acid tert-butyl ester
- CAS:
- 1941177-45-2
- MF:
- C29H37N7O3
- Structure:
- Chemical Name:
- Cabozantinib impurity 1
- CAS:
- 748707-58-6
- MF:
- C17H16N2O3
- Structure:
- Chemical Name:
- Amlodipine Impurity 19
- MF:
- C26H31ClN2O8S
- Structure:
- Chemical Name:
- Amlodipine Impurity 9
- CAS:
- 90445-05-9
- MF:
- C26H31ClN2O8S
- Structure:
- Chemical Name:
- Clopidogrel Impurity 7
- CAS:
- 444728-13-6
- MF:
- C15H15ClN2OS
- Structure:
- Chemical Name:
- Rivaroxaban Impurity 36
- CAS:
- 1770812-39-9
- MF:
- C19H17Cl2N3O5S
- Structure:
- Chemical Name:
- (S)-methyl 2-((2'-(2H-tetrazol-5-yl)biphenyl-4-yl)methylamino)-3-methylbutanoate
- CAS:
- 1111177-24-2
- MF:
- C20H23N5O2
- Structure:
- Chemical Name:
- Clopidogrel Impurity C
- CAS:
- 1346605-15-9
- MF:
- C16H18ClNO2S
- Structure:
- Chemical Name:
- Nilotinib genotoxic impurity 2
- CAS:
- 1157857-29-8
- MF:
- C19H15F3N4O3
- Structure:
- Chemical Name:
- NCFJJNFEEPMRAQ-XMMPIXPASA-N
- CAS:
- 1453221-45-8
- MF:
- C35H41F6N3O6
- Chemical Name:
- Gliclazide Impurity E
- Structure:
- Chemical Name:
- Ethyl 1-butanesulfonate
- CAS:
- 2374-68-7
- MF:
- C6H14O3S
- Structure:
- Chemical Name:
- OLANEXIDINE intermediate
- CAS:
- 60852-95-1
- MF:
- C10H20N4
- Structure:
- Chemical Name:
- 1H-Isoindole, octahydro-, trans-
- CAS:
- 10479-63-7
- MF:
- C8H15N
- Structure:
- Chemical Name:
- 1H-Purine-2,6-dione,8-[2-(3,4-dihydroxyphenyl)ethenyl]-1,3-diethyl-3,7-dihydro-7-methyl-, (E)-(9CI)
- CAS:
- 155272-03-0
- MF:
- C18H20N4O4
- Structure:
- Chemical Name:
- Hexanoicacid, 3-(2-amino-2-oxoethyl)-5-methyl-, (3S)-
- CAS:
- 181289-34-9
- MF:
- C9H17NO3
- Structure:
- Chemical Name:
- Ethanedioic acid, monoethyl ester, 2-(4-methoxyphenyl)hydrazide
- CAS:
- 2614-10-0
- MF:
- C11H14N2O4
- Structure:
- Chemical Name:
- 4-Pyridinecarboxamide, N-[2-(nitrooxy)ethyl]-, mononitrate
- CAS:
- 65141-48-2
- MF:
- C8H10N4O7
- Structure:
- Chemical Name:
- 1-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-hydroxy-pyrimidine-2,4-dione
- CAS:
- 69321-95-5
- MF:
- C9H12N2O7
- Structure:
- Chemical Name:
- 2-(ACETOXYMETHYL)-4-METHOXY-3,5-DIMETHYLPYRIDINE
- CAS:
- 91219-90-8
- MF:
- C11H15NO3
- Structure:
- Chemical Name:
- 4,4'-(4H-1,2,4-TRIAZOL-4-YLMETHYLENE)BIS BENZONITRILE
- CAS:
- 112809-52-6
- MF:
- C17H11N5