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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- alpha-[2-Fluoro-4-(1H-1,2,4-triazol-1-yl)phenyl]-alpha-(1H-1,2,4-triazol-1-ylmethyl)-1H-1,2,4-triazole-1-ethanol
- CAS:
- 871550-15-1
- MF:
- C15H14FN9O
- Chemical Name:
- INTERFERON ALFA-2B
- CAS:
- 99210-65-8
- Chemical Name:
- COAGULATION FACTOR VIIA, HUMAN
- CAS:
- 102786-61-8
- Structure:
- Chemical Name:
- CLADRIBINE RELATED COMPOUND A (20 MG) (2-METHOXY-2'-DEOXYADENOSINE)
- CAS:
- 24757-70-8
- MF:
- C11H15N5O4
- Structure:
- Chemical Name:
- VALPROIC ACID RELATED COMPOUND B (50 MG) ((2RS)-2-(1-METHYLETHYL)PENTANOIC ACID) (AS)
- CAS:
- 62391-99-5
- MF:
- C8H16O2
- Structure:
- Chemical Name:
- 3-Oxo Ropinirole Hydrochloride
- CAS:
- 221264-21-7
- MF:
- C16H23ClN2O2
- Structure:
- Chemical Name:
- Citalopram hydrochloride
- CAS:
- 85118-27-0
- MF:
- C20H22ClFN2O
- Structure:
- Chemical Name:
- 7-hydroxy-2-methyl-4H-chromen-4-one
- CAS:
- 6320-42-9
- MF:
- C10H8O3
- Structure:
- Chemical Name:
- Desisobutyryl Ciclesonide
- CAS:
- 161115-59-9
- MF:
- C28H38O6
- Structure:
- Chemical Name:
- 1-(3-Chlorophenyl)-2-hydroxy-1-propanone
- CAS:
- 152943-33-4
- MF:
- C9H9ClO2
- Structure:
- Chemical Name:
- Des[2-[(2-Hydroxyethyl)aMino]ethyl] Mitoxantrone (Mitoxantrone IMpurity A)
- CAS:
- 89991-52-6
- MF:
- C18H19N3O5
- Structure:
- Chemical Name:
- Desmethyl Chlorpheniramine Maleate Salt
- CAS:
- 22630-25-7
- MF:
- C19H21ClN2O4
- Structure:
- Chemical Name:
- Morphine Sulfate
- CAS:
- 6211-15-0
- MF:
- C34H50N2O15S
- Structure:
- Chemical Name:
- 4-O-BETA-GALACTOPYRANOSYL-D-MANNOPYRANOSE
- CAS:
- 50468-56-9
- MF:
- C12H22O11
- Structure:
- Chemical Name:
- exo-Granisetron (Granisetron Impurity F)
- CAS:
- 127472-42-8
- MF:
- C18H24N4O
- Structure:
- Chemical Name:
- dacisteine
- CAS:
- 18725-37-6
- MF:
- C7H11NO4S
- Structure:
- Chemical Name:
- (±)-2-methyl-1-nitrosoindoline
- CAS:
- 85440-79-5
- MF:
- C9H10N2O
- Structure:
- Chemical Name:
- (5alpha)-7,8-didehydro-4,5-epoxy-14-hydroxy-3-methoxy-17-methylmorphinan-6-one
- CAS:
- 508-54-3
- MF:
- C18H19NO4
- Structure:
- Chemical Name:
- Telmisartan Related Compound B (15 mg) (4'-[(1,7'-dimethyl-2'-propyl-1H,1'H-2,5'-bibenzo[d]imidazol-1'-yl)methyl]biphenyl-2-carboxylic acid)
- CAS:
- 1026353-20-7
- MF:
- C33H30N4O2
- Structure:
- Chemical Name:
- LEVODOPA RELATED COMPOUND A (50 MG) (3-(3,4,6-TRIHYDROXYPHENYL)-ALANINE)
- CAS:
- 27244-64-0
- MF:
- C9H11NO5
- Structure:
- Chemical Name:
- 3-Nitro-4-phenoxy-5-sulfaMoylbenzoic Acid
- CAS:
- 28328-53-2
- MF:
- C13H10N2O7S
- Structure:
- Chemical Name:
- ALLOPURINOL IMPURITY C
- CAS:
- 1346604-13-4
- MF:
- C6H6N6O
- Structure:
- Chemical Name:
- PEAK E
- CAS:
- 132685-02-0
- MF:
- C24H26N4O4
- Structure:
- Chemical Name:
- CHLORCYCLIZINE HYDROCHLORIDE
- CAS:
- 14362-31-3
- MF:
- C18H22Cl2N2
- Structure:
- Chemical Name:
- 1-[4-(2-Hydroxyethyl)phenoxy]-2,3-epoxypropane
- CAS:
- 63659-17-6
- MF:
- C15H20O3
- Structure:
- Chemical Name:
- Almagate
- CAS:
- 66827-12-1
- MF:
- CH6AlMgO4(-3)
- Structure:
- Chemical Name:
- Loperamide
- CAS:
- 106900-12-3
- MF:
- C29H33ClN2O3
- Structure:
- Chemical Name:
- L-Glutamic acid, N-[4-[[ (2-amino-1, 4-dihydro-4-oxo-6-pteridinyl)meth yl]methylamino]benzoyl]-
- CAS:
- 2410-93-7
- MF:
- C20H21N7O6
- Structure:
- Chemical Name:
- 2-(Acetylsulfanyl)ethanesulphonic
- CAS:
- 69536-71-6
- MF:
- C4H8O4S2
- Structure:
- Chemical Name:
- rac 1-Chloro-3-[4-(2-methoxyethyl)phenoxy]-2-propanol
- CAS:
- 56718-76-4
- MF:
- C12H17ClO3
- Structure:
- Chemical Name:
- Albuterol Aldehyde
- CAS:
- 156339-88-7
- MF:
- C13H19NO3
- Structure:
- Chemical Name:
- 4-phenylbutylphosphonic acid
- CAS:
- 46348-61-2
- MF:
- C10H15O3P
- Structure:
- Chemical Name:
- 17R-Drospirenone
- CAS:
- 90457-65-1
- MF:
- C24H30O3
- Structure:
- Chemical Name:
- Trandolapril Related Compound D (25 mg) ((S)-ethyl 2-[(3S, 5aS, 9aR, 10aS)-3-methyl-1,4-dioxodecahydropyrazino[1,2-a]indol-2(1H)-yl]-4-phenylbutanoate)
- CAS:
- 149881-40-3
- MF:
- C24H32N2O4
- Structure:
- Chemical Name:
- Benzoic acid, 2-(hexahydro-1-Methyl-1H-azepin-4-yl)hydrazide
- CAS:
- 110406-94-5
- MF:
- C14H21N3O
- Structure:
- Chemical Name:
- D-PENICILLAMINE DISULFIDE
- CAS:
- 20902-45-8
- MF:
- C10H20N2O4S2
- Structure:
- Chemical Name:
- DESETHYL CHLOROQUINE
- CAS:
- 1476-52-4
- MF:
- C16H22ClN3
- Chemical Name:
- HIDE POWDER
- Structure:
- Chemical Name:
- BETAMETHASONE BENZOATE (200 MG)
- CAS:
- 22298-29-9
- MF:
- C35H41FO8
- Structure:
- Chemical Name:
- TIZANIDINE RELATED COMPOUND B (50 MG) (N-ACETYLTIZANIDINE)
- CAS:
- 173532-15-5
- MF:
- C11H10ClN5OS
- Structure:
- Chemical Name:
- 9,11-Didehydroestriol
- CAS:
- 246021-20-5
- MF:
- C18H22O3
- Structure:
- Chemical Name:
- PHENYTOIN RELATED COMPOUND B (50 MG) (AL-PHA-((AMINOCARBONYL)AMINO)-ALPHA-PHENYL BEN-ZENEACETIC ACID)
- CAS:
- 6802-95-5
- MF:
- C15H14N2O3
- Structure:
- Chemical Name:
- OXYBUTYNIN IMPURITY A
- CAS:
- 1199574-71-4
- MF:
- C22H35NO3
- Structure:
- Chemical Name:
- 1-[3-(4-tert-Butylbenzoyl)propyl]-4-hydroxypiperidine
- CAS:
- 97928-18-2
- MF:
- C19H29NO2
- Structure:
- Chemical Name:
- benazepril hydrochloride
- CAS:
- 215447-89-5
- MF:
- C24H28N2O5HCl
- Structure:
- Chemical Name:
- L-Nateglinide
- CAS:
- 105816-05-5
- MF:
- C19H27NO3
- Structure:
- Chemical Name:
- cis-Tranylcypromine hydrochloride
- CAS:
- 54779-58-7
- MF:
- C9H12ClN
- Structure:
- Chemical Name:
- (1S–4R)-4-(2-amino-6-chloro-9H-purin-9-yl)-2-cyclopentene-1-methanol hydrochloride
- CAS:
- 172015-79-1
- MF:
- C11H12ClN5O.ClH
- Structure:
- Chemical Name:
- Atorvastatin Related Compound C
- CAS:
- 693793-53-2
- MF:
- C33H36CaF2N2O5
- Structure:
- Chemical Name:
- [2-(3-pyridinyl)ethylidene-1,1]bis(phosphonic acid)
- CAS:
- 75755-10-1
- MF:
- C7H11NO6P2
- Structure:
- Chemical Name:
- 2,2'-Binaphthalene-6,6'-dicarboxylic Acid
- CAS:
- 932033-58-4
- MF:
- C22H14O4
- Structure:
- Chemical Name:
- INDAPAMIDE RELATED COMPOUND A (50 MG) (4-CHLORO-N-(2-METHYL-INDOL-1-YL)-3-SULFAMOYLBEN-ZAMIDE) (AS)
- CAS:
- 63968-75-2
- MF:
- C16H14ClN3O3S
- Structure:
- Chemical Name:
- DESETHYLENE CIPROFLOXACIN, HYDROCHLORIDE
- CAS:
- 528851-31-2
- MF:
- C15H16FN3O3.ClH
- Structure:
- Chemical Name:
- OXOLINIC ACID IMPURITY B
- CAS:
- 16172-03-5
- MF:
- C15H15NO5
- Structure:
- Chemical Name:
- Gabapentin Related Compound D
- CAS:
- 1076198-17-8
- MF:
- C18H29NO3
- Structure:
- Chemical Name:
- Vardenafil hydrochloride trihydrate
- CAS:
- 330808-88-3
- MF:
- C23H35ClN6O5S
- Structure:
- Chemical Name:
- Norglipin
- CAS:
- 16444-19-2
- MF:
- C21H23NO3
- Structure:
- Chemical Name:
- 4-[Methyl[(2-amino-4-hydroxypteridine)-6-ylmethyl]amino]benzoic acid
- CAS:
- 5623-18-7
- MF:
- C15H14N6O3
- Structure:
- Chemical Name:
- 2-(3-CARBOXYPHENYL)PROPIONIC ACID
- CAS:
- 68432-95-1
- MF:
- C10H10O4
- Structure:
- Chemical Name:
- rac 5-Desfluoro Voriconazole
- CAS:
- 182369-73-9
- MF:
- C16H15F2N5O
- Structure:
- Chemical Name:
- 3-Oxo Ziprasidone (Ziprasidone Impurity B)
- CAS:
- 1159977-56-6
- MF:
- C21H19ClN4O2S
- Structure:
- Chemical Name:
- Desfluoro Risperidone
- CAS:
- 106266-09-5
- MF:
- C23H28N4O2
- Structure:
- Chemical Name:
- Des(2,3-dihydroxypropyl) Iodixanol
- CAS:
- 255376-57-9
- MF:
- C32H38I6N6O13
- Structure:
- Chemical Name:
- DAUNOMYCINONE
- CAS:
- 21794-55-8
- MF:
- C21H18O8
- Structure:
- Chemical Name:
- Duloxetine IMpurity A
- CAS:
- 947686-09-1
- MF:
- C25H23NO3S
- Structure:
- Chemical Name:
- Labetalol IMpurity A
- CAS:
- 1391051-99-2
- MF:
- C19H23NO4
- Structure:
- Chemical Name:
- Cetirizine Ethyl Ester (USP RC A)
- CAS:
- 246870-46-2
- MF:
- C23H29ClN2O3
- Structure:
- Chemical Name:
- 6,6'-DiMethoxy-2,2'-binaphthalene
- CAS:
- 29619-45-2
- MF:
- C22H18O2
- Structure:
- Chemical Name:
- FLUCONAZOLE RELATED COMPOUND B (10 MG) (2-(4-FLUOROPHENYL)-1,3-BIS(1 H-1,2,4-TRIAZOL-1 -YL)-PROPAN-2-OL)
- CAS:
- 81886-51-3
- MF:
- C13H13FN6O
- Structure:
- Chemical Name:
- Levomepromazine hydrochloride
- CAS:
- 1236-99-3
- MF:
- C19H24N2OS.ClH
- Structure:
- Chemical Name:
- Prednisolone 21-trimethylacetate
- CAS:
- 1107-99-9
- MF:
- C26H36O6
- Structure:
- Chemical Name:
- C00984
- CAS:
- 3646-73-9
- MF:
- C6H12O6
- Structure:
- Chemical Name:
- Aripiprazole N1-Oxide
- CAS:
- 573691-09-5
- MF:
- C23H27Cl2N3O3
- Structure:
- Chemical Name:
- N-De(4-sulfonaMidophenyl)-N'-(4-sulfonaMidophenyl) Celecoxib
- CAS:
- 331943-04-5
- MF:
- C17H14F3N3O2S
- Structure:
- Chemical Name:
- 5-[2-Ethoxy-5-[(4-Methyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-Methyl-3-(2-Methylpropyl)-7H-pyrazolo[4,3-d]pyriMidin-7-one
- CAS:
- 1391053-95-4
- MF:
- C23H32N6O4S
- Structure:
- Chemical Name:
- N-[[(HEXAHYDROCYCLOPENTA [C]PYRROL-2(1H)-YL)AMINO]CARBONYL]-2-METHYL BENZENESULFONAMIDE
- CAS:
- 1076198-18-9
- MF:
- C15H21N3O3S
- Structure:
- Chemical Name:
- HALOPERIDOL RELATED COMPOUND A (15 MG) (4,4'-BIS[(4-P-CHLOROPHENYL)-4-HYDROXY-PIPERIDINO]-BU-TYROPHENONE)
- CAS:
- 67987-08-0
- MF:
- C32H36Cl2N2O3
- Structure:
- Chemical Name:
- 5-Amino-2,4,6-triiodo-N-methylisophthalamic Acid
- CAS:
- 2280-89-9
- MF:
- C9H7I3N2O3
- Structure:
- Chemical Name:
- OXITROPIUM BROMIDE
- CAS:
- 30286-75-0
- MF:
- C19H26BrNO4
- Structure:
- Chemical Name:
- Dehydronitrendipine
- CAS:
- 89267-41-4
- MF:
- C18H18N2O6
- Structure:
- Chemical Name:
- 4-Benzyl Albuterol
- CAS:
- 56796-66-8
- MF:
- C20H27NO3
- Structure:
- Chemical Name:
- cephaeline hydrochloride
- CAS:
- 5853-29-2
- MF:
- C28H39ClN2O4
- Structure:
- Chemical Name:
- Coenzyme
- CAS:
- 45127-11-5
- MF:
- C4H10O6S4
- Structure:
- Chemical Name:
- 7-AMINO-3-[(Z)-PROP-1-ENYL]-3-CEPHEM-4-CARBOXYLIC ACID
- CAS:
- 106447-44-3
- MF:
- C10H12N2O3S
- Structure:
- Chemical Name:
- 2,6-Diisopropyl-1,4-benzoquinone
- CAS:
- 1988-11-0
- MF:
- C12H16O2
- Structure:
- Chemical Name:
- Repaglinide EP Impurity E
- CAS:
- 147852-26-4
- MF:
- C27H36N2O4
- Structure:
- Chemical Name:
- Gemfibrozil Related Compound A ,(E,Z)-2,2-dimethyl-5-[2,5-dimethyl-4-(propene-1-yl)phenoxy]valeric acid
- CAS:
- 500904-61-0
- MF:
- C18H26O3
- Structure:
- Chemical Name:
- Atorvastatin Related Compound A
- CAS:
- 433289-83-9
- MF:
- C33H35CaN2O5+
- Structure:
- Chemical Name:
- 4-DesMethyl-3-Methyl Celecoxib
- CAS:
- 170570-01-1
- MF:
- C17H14F3N3O2S
- Structure:
- Chemical Name:
- 6-O-METHYLCODEINE
- CAS:
- 2859-16-7
- MF:
- C19H23NO3
- Structure:
- Chemical Name:
- Prednisolone tebutate
- CAS:
- 7681-14-3
- MF:
- C27H38O6
- Structure:
- Chemical Name:
- ACETOPHENAZINE MALEATE (200 MG)
- CAS:
- 5714-00-1
- MF:
- C53H64N6O11S2
- Structure:
- Chemical Name:
- apovincamine
- CAS:
- 4880-92-6
- MF:
- C21H24N2O2
- Structure:
- Chemical Name:
- 4-cyclohexyl-alpha-methylnaphthalene-1-acetic acid
- CAS:
- 71109-09-6
- MF:
- C19H22O2
- Structure:
- Chemical Name:
- eicosapentaenoic acid ethyl ester
- CAS:
- 73310-10-8
- MF:
- C22H34O2
- Structure:
- Chemical Name:
- CLEBOPRIDE MALATE
- CAS:
- 57645-91-7
- MF:
- C23H28ClN3O6
- Structure:
- Chemical Name:
- 1-(3-Chlorophenyl)-1-hydroxy-2-propanone
- CAS:
- 857233-13-7
- MF:
- C9H9ClO2
- Structure:
- Chemical Name:
- 3S, 5S enantioMer of Atorvastatin CalciuM
- CAS:
- 1105067-88-6
- MF:
- C33H34CaFN2O5+
- Structure:
- Chemical Name:
- SalMeterol Xinafoate Adduct IMpurity
- CAS:
- 1330076-52-2
- MF:
- C36H43NO6
- Chemical Name:
- EPOXIDIZED LINSEED OIL
- CAS:
- 8016-11-3