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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- O-DesMethyl Venlafaxine Cyclic IMpurity
- CAS:
- 1346601-55-5
- MF:
- C16H23NO2
- Structure:
- Chemical Name:
- rac-cis-2,3-Dichloro Sertraline Hydrochloride
- CAS:
- 1198084-29-5
- MF:
- C17H18Cl3N
- Structure:
- Chemical Name:
- 11β-Hydroperoxy Dienogest
- CAS:
- 106111-43-7
- MF:
- C20H25NO4
- Structure:
- Chemical Name:
- 2'-Nor ThiaMine
- CAS:
- 7770-93-6
- MF:
- C11H15ClN4OS
- Structure:
- Chemical Name:
- 6α-Methyl Hydrocortisone 21-Acetate
- CAS:
- 1625-11-2
- MF:
- C24H34O6
- Chemical Name:
- piperacillinylaMpicillin
- Chemical Name:
- Celecoxib iMpurity-B
- Chemical Name:
- EMtricitabine iMpurity B
- Structure:
- Chemical Name:
- (S,S)-1,7-diazatricyclo[7.3.0.07,11]dodecane-2,6,8,12-tetrone
- CAS:
- 14842-41-2
- MF:
- C10H10N2O4
- Structure:
- Chemical Name:
- 1-Hydroxy-7-Methoxy-1,2,3,4-tetrahydronaphthalene
- CAS:
- 32820-10-3
- MF:
- C11H14O2
- Structure:
- Chemical Name:
- BroMhexine Hydrochloride iMpurity DN-(2-AMino-5-broMobenzyl)-N-MethylcyclohexanaMine Dihydrochloride
- CAS:
- 132004-28-5
- MF:
- C14H21BrN2
- Structure:
- Chemical Name:
- 2-(DiMethylcarbaMoyl)benzoic acid, 97%
- CAS:
- 20320-37-0
- MF:
- C10H11NO3
- Structure:
- Chemical Name:
- RAC DESMETHYL CITALOPRAM HYDROCHLORIDE
- CAS:
- 97743-99-2
- MF:
- C19H19FN2O
- Structure:
- Chemical Name:
- rac-3-Oxo Atorvastatin SodiuM Salt
- CAS:
- 1391052-00-8
- MF:
- C33H34FN2NaO5
- Structure:
- Chemical Name:
- 2-Demethoxy-4-methoxy urapidil
- CAS:
- 34661-79-5
- MF:
- C20H29N5O3
- Structure:
- Chemical Name:
- Ribavirin IMpurity F
- CAS:
- 58151-87-4
- MF:
- C10H14N4O6
- Structure:
- Chemical Name:
- 4-[-((-((4-(5-(Bis(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanoyl)oxy)ethyl)(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanic Acid
- CAS:
- 1228551-91-4
- MF:
- C32H41Cl3N6O4
- Structure:
- Chemical Name:
- 3-(6,7-Dihydro-2-Methyl-7-oxo-3-propyl-2H-pyrazolo[4,3-d]pyriMidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride
- CAS:
- 501120-42-9
- MF:
- C17H19ClN4O4S
- Structure:
- Chemical Name:
- (3R,4S)-rel-3-[(1,3-Benzodioxol-5-yloxy)Methyl]-4-(4'-fluoro[1,1'-biphenyl]-4-yl)-piperidine Hydrochloride
- CAS:
- 1217655-87-2
- MF:
- C25H25ClFNO3
- Structure:
- Chemical Name:
- (16α)-16,17-[Butylidenebis(oxy)]-21-hydroxypregna-1,4-diene-3,11,20-trione
- CAS:
- 216453-74-6
- MF:
- C25H32O6
- Structure:
- Chemical Name:
- 6(S)-Hydroperoxy Simvastatin
- CAS:
- 149949-01-9
- MF:
- C25H38O7
- Structure:
- Chemical Name:
- Russupteridine IV
- CAS:
- 2535-20-8
- MF:
- C13H18N4O6
- Structure:
- Chemical Name:
- 2-[(1-Benzylpiperidin-4-yl)hydroxyMethyl]-5,6-diMethoxyindan-1-one
- CAS:
- 197010-20-1
- MF:
- C24H29NO4
- Structure:
- Chemical Name:
- 5,6-trans-Ergocalciferol
- CAS:
- 51744-66-2
- MF:
- C28H44O
- Structure:
- Chemical Name:
- 2-isonicotinoyl-5,6-diMethoxy-2,3-dihydro-1H-inden-1-one
- CAS:
- 923571-15-7
- MF:
- C17H15NO4
- Structure:
- Chemical Name:
- 4-(2-nitrophenyl)Morpholin-3-one
- CAS:
- 845729-41-1
- MF:
- C10H10N2O4
- Structure:
- Chemical Name:
- Irbesartan IMpurity E
- MF:
- C25H28N6O
- Structure:
- Chemical Name:
- LeflunoMide EP IMpurity G
- CAS:
- 724429-16-7
- MF:
- C12H12N2O2
- Chemical Name:
- Telmisartan impurity C
- Chemical Name:
- Itraconazole iMpurity E
- Structure:
- Chemical Name:
- Edoxaban Isomer (RRR)
- CAS:
- 1255529-24-8
- MF:
- C24H30ClN7O4S
- Structure:
- Chemical Name:
- 1-NaphthaleneacetaMide, 1,2,3,4-tetrahydro-7-Methoxy-
- CAS:
- 92041-01-5
- MF:
- C13H17NO2
- Structure:
- Chemical Name:
- 1,4,7,10-Tetraazacyclododecane-1,7-diacetic acid
- CAS:
- 112193-75-6
- MF:
- C12H24N4O4
- Structure:
- Chemical Name:
- 7-ethyl-5H-chroMeno[2,3-b]pyridin-5-one
- CAS:
- 53944-31-3
- MF:
- C14H11NO2
- Structure:
- Chemical Name:
- 2-Methyl-10H-thieno[2,3-b][1,5]benzodiazepin-4-aMine
- CAS:
- 612503-08-9
- MF:
- C12H11N3S
- Structure:
- Chemical Name:
- 21-Dehydro-16α-hydroxy Prednisolone
- CAS:
- 1188271-73-9
- MF:
- C21H26O6
- Structure:
- Chemical Name:
- (6α,11β)-11,20-Dihydroxy-6-Methyl-3-oxopregna-1,4,17(20)-trien-21-al
- CAS:
- 1338549-02-2
- MF:
- C22H28O4
- Structure:
- Chemical Name:
- (1R)-2-chloro-1-(3,4-difluorophenyl)-1-ethanol
- CAS:
- 1212376-05-0
- MF:
- C8H7ClF2O
- Structure:
- Chemical Name:
- 2-[[(3aR,4S,6R,6aS)-6-[7-Chloro-5-(propylthio)-3H-1,2,3-triazolo[4,5-d]pyrimidin-3-yl]tetrahydro-2,2-dimethyl-4H-cyclopenta-1,3-dioxol-4-yl]oxy]-ethanol
- CAS:
- 376608-75-2
- MF:
- C17H24ClN5O4S
- Structure:
- Chemical Name:
- Fluconazole IMpurity F
- MF:
- C13H12F2N6O
- Structure:
- Chemical Name:
- Erlotinib IMpurity A
- CAS:
- 1058132-82-3
- MF:
- C22H25N3O4
- Chemical Name:
- Apixaban iMpurity 5
- Structure:
- Chemical Name:
- cefaclor iMpurity C
- CAS:
- 143059-69-2
- MF:
- C15H14ClN3O4S
- Chemical Name:
- ceftazidiMe iMpurity B
- CAS:
- 1236700-64-3
- Structure:
- Chemical Name:
- pidotiMod iMpurity D
- CAS:
- 162148-15-4
- MF:
- C9H12N2O4S
- Structure:
- Chemical Name:
- Irinotecan Hydroxyl Acid
- CAS:
- 142677-15-4
- MF:
- C22H22N2O6
- Structure:
- Chemical Name:
- CyclopropanaMine, 2-(4-fluorophenyl)-(hydrochloride)(1:1),(1R,2S)-
- CAS:
- 1314324-00-9
- MF:
- C9H11ClFN
- Structure:
- Chemical Name:
- (1S,2S,3R,5S)-3-(7-(((1R,2S)-2-(3,4-difluorophenyl)cyclopropyl)aMino)-5-(propylsulfinyl)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-5-(2-hydroxyethoxy)cyclopentane-1,2-diol
- CAS:
- 1644461-85-7
- MF:
- C23H28F2N6O5S
- Chemical Name:
- AtracuriuM IMpurity C (Mixture of DiastereoMers)
- CAS:
- 86293-35-8
- Chemical Name:
- AtracuriuM IMpurity E (cis-Quaternary Acid)
- Chemical Name:
- AztreonaM IMpurity B
- Chemical Name:
- Ceftriaxone IMpurit E
- Structure:
- Chemical Name:
- decyl D-glucoside
- CAS:
- 54549-25-6
- MF:
- C16H32O6
- Chemical Name:
- 3-(((2R,3S)-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3-(3-fluorophenyl)morpholino)methyl)-1H-1,2,4-triazol-5(4H)-one
- Structure:
- Chemical Name:
- 1-benzyl-4-phenylpiperidin-4-ol
- CAS:
- 63843-83-4
- MF:
- C18H21NO
- Structure:
- Chemical Name:
- [(±)-(4-amino-2-hydroxy-4-oxobutyl)trimethylammonium] chloride
- CAS:
- 5261-99-4
- MF:
- C7H18ClN2O2+
- Structure:
- Chemical Name:
- (S,R)-Palonosetron N-Oxide
- MF:
- C19H24N2O2
- Structure:
- Chemical Name:
- 17,21-dihydroxy-16beta-methylpregna-1,4,9(11)-triene-3,20-dione
- CAS:
- 13504-15-9
- MF:
- C22H28O4
- Structure:
- Chemical Name:
- Sulfamide, N-[6-[2-[(5-bromo-2-pyrimidinyl)oxy]ethoxy]-5-phenyl-4-pyrimidinyl]-N'-propyl-
- CAS:
- 2300968-87-8
- MF:
- C19H21BrN6O4S
- Structure:
- Chemical Name:
- Benzeneacetonitrile, 4-(4-chloro-1-oxobutyl)-α,α-dimethyl-
- CAS:
- 169032-17-1
- MF:
- C14H16ClNO
- Chemical Name:
- Oseltamivir Impurity 103
- Chemical Name:
- Oseltamivir Impurity 101
- Structure:
- Chemical Name:
- Acetamide, N-(4-hydroxyphenyl)-N-nitroso-
- CAS:
- 146897-60-1
- MF:
- C8H8N2O3
- Structure:
- Chemical Name:
- 3-Azetidineacetonitrile, 1-(ethylsulfonyl)-3-[4-(1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl]-
- CAS:
- 2402776-83-2
- MF:
- C16H17N7O2S
- Chemical Name:
- Iohexol ImpuritiesE
- Structure:
- Chemical Name:
- TERT-BUTYL (R)-6-CHLORO-5-HYDROXY-3-OXOHEXANOATE
- CAS:
- 404958-08-3
- MF:
- C10H17ClO4
- Chemical Name:
- 8-chloro-11-(1-((5-methylpyridin-3-yl)methyl)piperidin-4-yl)-11H-benzo[5,6]cyclohepta[1,2-b]pyridine
- Chemical Name:
- Bumetanide Photodegradable Impurity 16
- Chemical Name:
- Bisoprolol Impurity 47
- Chemical Name:
- Gadobutrol Impurity 11(Ammonium salt)
- Chemical Name:
- Flomoxef Impurity F
- Chemical Name:
- Tegoprazan Impurity 15
- Chemical Name:
- Nirmatrelvir Impurity 8
- Chemical Name:
- Nirmatrelvir Impurity 2
- Chemical Name:
- (5-(2-fluorophenyl)-1H-pyrrol-3-yl)methanamine hydrochloride
- Chemical Name:
- Rocuronium Bromide Impurity 24 、25
- Structure:
- Chemical Name:
- Cetirizine IMpurity-6
- MF:
- C21H25ClN2O3
- Structure:
- Chemical Name:
- Cinacalcet IMpurity 10
- CAS:
- 1809324-40-0
- MF:
- C29H28F3NO2S
- Chemical Name:
- Dasatinib IMpurity 5
- Structure:
- Chemical Name:
- Diacerein IMpurity F
- CAS:
- 13928-72-8
- MF:
- C35H36O16
- Structure:
- Chemical Name:
- D-Valganciclovir Hydrochloride
- CAS:
- 1393911-57-3
- MF:
- C14H23ClN6O5
- Chemical Name:
- Entecavir IMpurity E
- Structure:
- Chemical Name:
- EzetiMibe IMpurity 1
- CAS:
- 190595-66-5
- MF:
- C24H22FNO3
- Structure:
- Chemical Name:
- Flurbiprofen IMpurity B
- CAS:
- 1797883-74-9
- MF:
- C18H17FO4
- Chemical Name:
- IMatinib DiPiperidine IMpurity
- Chemical Name:
- levocetirizine IMpurity
- Chemical Name:
- OseltaMivir IMpurity F
- Chemical Name:
- RocuroniuM BroMide IMpurity 19
- Structure:
- Chemical Name:
- S-(+)-O-DesMethyl-Venlafaxine-d6
- CAS:
- 1062609-99-7
- MF:
- C16H25NO2
- Structure:
- Chemical Name:
- SalMeterol IMpurity F
- MF:
- C25H37NO4
- Structure:
- Chemical Name:
- Sitagliptin Defuoro IMpurity 4
- CAS:
- 486459-98-7
- MF:
- C15H19F2NO4
- Chemical Name:
- Sulpiride IMpurity F
- Structure:
- Chemical Name:
- trans-Ibuprofen IMpurity G
- CAS:
- 1391054-15-1
- MF:
- C26H32O4
- Structure:
- Chemical Name:
- EthanediaMide iMpurity F
- CAS:
- 480452-37-7
- MF:
- C16H22ClN5O3
- Chemical Name:
- Paroxetine IMpurity
- Structure:
- Chemical Name:
- 7-[(2-aMinoethyl)aMino] -1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
- MF:
- C14H16FN3O3
- Structure:
- Chemical Name:
- (S)-(1R,3s,5S)-8-Methyl-8-azabicyclo[3.2.1]oct-6-en-3-yl 3-hydroxy-2-phenylpropanoate
- CAS:
- 61616-97-5
- MF:
- C17H21NO3