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Pharmaceutical Impurity Reference Standards
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- Chemical Name:Cefminox Sodium impurity B
- CAS:
- MF:
- Chemical Name:Cefotiam Impurity B
- CAS:
- MF:
- Structure:
- Chemical Name:pranoprofen impurity 11
- CAS:52549-44-7
- MF:C15H13NO4
- Structure:
- Chemical Name:Atorvastatin Calcium Hydrate impurity 32
- CAS:2088732-01-6
- MF:C14H27NO4
- Chemical Name:Cefazolin Impurity 5
- CAS:
- MF:
- Chemical Name:Peramivir Impurity E
- CAS:
- MF:
- Chemical Name:Lincomycin sulfoxide Impurity 3
- CAS:
- MF:
- Chemical Name:Lincomycin sulfoxide Impurity F
- CAS:
- MF:
- Chemical Name:Fasudil iMpurity F
- CAS:
- MF:
- Structure:
- Chemical Name:1-cyclopropyl-8-ethoxy-6-fluoro-7-((4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid hydrochloride
- CAS:2252446-70-9
- MF:C22H27ClFN3O4
- Chemical Name:Doxofylline iMpurity E
- CAS:
- MF:
- Structure:
- Chemical Name:Mupirocin Impurity 3
- CAS:
- MF:C26H44O9
- Structure:
- Chemical Name:3,4-DICHLOROBENZYLAMINE HYDROCHLORIDE
- CAS:49552-34-3
- MF:C7H8Cl3N
- 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
- Chemical Name:Dapagliflozin Impurity F
- CAS:
- MF:
- Chemical Name:Dapoxetine Impurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Entecavir Impurity
- CAS:1333204-94-6
- MF:C12H15N5O3
- Chemical Name:Gadobutrol Impurity
- CAS:71231-87-3
- MF:
- Chemical Name:Lesinurad Impurity
- CAS:
- MF:
- Chemical Name:Pramipexole Impurity G
- CAS:
- MF:
- Structure:
- Chemical Name:Salmeterol EP Impurity A
- CAS:1798014-51-3
- MF:C19H25NO3
- Chemical Name:Tacrolimus impurity D
- CAS:
- MF:
- 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
- CAS:
- MF:
- 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
- CAS:
- MF:
- 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
- CAS:
- MF:
- 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
- CAS:
- MF:
- Chemical Name:Acarbose Impurity B
- CAS:
- MF:
- Chemical Name:Sofosbuvir Impurity28
- CAS:
- MF:
- Chemical Name:Rivaroxaban Impurity 10
- CAS:
- MF:
- Chemical Name:Ipragliflozin Impurity 1
- CAS:
- MF:
- 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
- CAS:
- MF:C25H28N6O
- Chemical Name:Voriconazole Impurity 2
- CAS:
- MF:
- Chemical Name:Safinamide Impurity 1
- CAS:
- MF:
- Chemical Name:Caspofungin impurit 2
- CAS:
- MF:
- Chemical Name:Lamivudine impurity 1
- CAS:
- MF:
- Structure:
- Chemical Name:Raltitrexed Impurity 1
- CAS:1378372-01-0
- MF:C10H10N2O2
- Structure:
- Chemical Name:Loratadine Impurity 6
- CAS:
- MF:C22H23ClN2O2
- Chemical Name:Mirabegron Impurity 3
- CAS:
- MF:
- Chemical Name:Plerixafor Impurity C
- CAS:
- MF:
- Chemical Name:Vonoprazan Impuirty 8
- CAS:
- MF:
- Chemical Name:Sitagliptin IMpurity 4
- CAS:
- MF:
- Chemical Name:Brexpiprazole Impurity1
- CAS:
- MF:
- Chemical Name:Acarbose Impurity E
- CAS:
- MF:
- Structure:
- Chemical Name:Alvimopan Impurity 1
- CAS:2250243-53-7
- MF:C14H19NO
- Chemical Name:Febuxostat Impurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Fingolimod Hexyl Impurity
- CAS:1201794-93-5
- MF:C17H29NO2
- Chemical Name:Palbociclib Impurity 1
- CAS:
- MF:
- Chemical Name:Trelagliptin Impurity 8
- CAS:
- MF:
- 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
- CAS:
- MF:C25H35NO3
- Chemical Name:Flomoxef Impurity 4
- CAS:
- MF:
- Chemical Name:Nicardipine Impurity 5
- CAS:
- MF:
- 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
- CAS:
- 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
- CAS:
- 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