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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- rac N-DesMethyl-N-(4-Methoxyphenethyl) Venlafaxine
- CAS:
- 1346601-14-6
- MF:
- C25H35NO3
- Structure:
- Chemical Name:
- 11-Keto Oxcarbazepine
- CAS:
- 537693-29-1
- MF:
- C15H10N2O3
- Structure:
- Chemical Name:
- Isopropyl 4-(3-AMinophenyl)-1,4-dihydro-5-(2-Methoxyethoxycarbonyl)-2,6-diMethylpyridine-3-carboxylate
- CAS:
- 155861-24-8
- MF:
- C21H28N2O5
- Structure:
- Chemical Name:
- N1-Losartanyl-losartan (Losartan IMpurity)
- CAS:
- 230971-71-8
- MF:
- C44H44Cl2N12O
- Structure:
- Chemical Name:
- N2-Losartanyl-losartan (Losartan IMpurity)
- CAS:
- 230971-72-9
- MF:
- C44H44Cl2N12O
- Structure:
- Chemical Name:
- N-Ethoxycarbonyl 7-ADCA
- CAS:
- 72820-16-7
- MF:
- C11H14N2O5S
- Structure:
- Chemical Name:
- 2,4'-Diamino[sulfonylbisbenzene]
- CAS:
- 27147-69-9
- MF:
- C12H12N2O2S
- Structure:
- Chemical Name:
- 2-P-TOLYLOXYMETHYL-OXIRANE
- CAS:
- 2186-24-5
- MF:
- C10H12O2
- Structure:
- Chemical Name:
- 3-Hydroxyazobenzene
- CAS:
- 2437-11-8
- Structure:
- Chemical Name:
- Astragalin 7-O-β-D-glucopyranoside
- CAS:
- 25615-14-9
- MF:
- C27H30O16
- Structure:
- Chemical Name:
- 4-(5-CHLORO-2-THIENYL)-1,3-THIAZOL-2-AMINE
- CAS:
- 123971-45-9
- MF:
- C7H5ClN2S2
- Structure:
- Chemical Name:
- α,α-Dibromo-o-tolunitrile
- CAS:
- 655-63-0
- MF:
- C8H5Br2N
- Structure:
- Chemical Name:
- 7-CHLORO-1-ETHYL-6-FLUORO-4-OXO-1,4-DIHYDRO-[1,8]NAPHTHYRIDINE-3-CARBOXYLIC ACID
- CAS:
- 79286-73-0
- MF:
- C11H8ClFN2O3
- Structure:
- Chemical Name:
- HYDRIDE-L
- CAS:
- 41639-74-1
- MF:
- C18H22O4
- Structure:
- Chemical Name:
- 2-Amino-4-trifluoromethoxybenzothiazole
- CAS:
- 235101-36-7
- MF:
- C8H5F3N2OS
- Structure:
- Chemical Name:
- 7-[(4S)-4-Amino-6-azaspiro[2.4]heptan-6-yl]-8-chloro-6-fluoro-1-[(1R,2S)-2-fluorocyclopropyl]-4-oxoquinoline-3-carboxylic acid
- CAS:
- 127254-10-8
- MF:
- C19H18ClF2N3O3
- Structure:
- Chemical Name:
- Sitagliptin Carbamoyl -D-Glucuronide
- CAS:
- 940002-59-5
- MF:
- C23H23F6N5O9
- Structure:
- Chemical Name:
- 5-Hydroxy Desloratadine
- CAS:
- 117811-12-8
- MF:
- C19H19ClN2O
- 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:
- 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
- CAS:
- 105813-23-8
- 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
- Structure:
- Chemical Name:
- N-[3-[3-(1-Piperidinylmethyl)phenoxy]propyl]amine
- CAS:
- 73278-98-5
- MF:
- C15H24N2O
- Structure:
- Chemical Name:
- 7,10-Bis-O-(2,2,2-trichloroethoxycarbonyl)-10-deacetylbaccatin III
- CAS:
- 95603-44-4
- MF:
- C35H38Cl6O14
- Structure:
- Chemical Name:
- 4-(3-AMino-phenyl)-Morpholin-3-one
- CAS:
- 1082495-22-4
- MF:
- C10H12N2O2
- Structure:
- Chemical Name:
- 2-(DiethylaMino)-N-(2,3-diMethylphenyl)acetaMide Hydrochloride
- CAS:
- 857170-72-0
- MF:
- C14H23ClN2O
- Structure:
- Chemical Name:
- 4-Hydroxy Darunavir
- CAS:
- 313682-97-2
- MF:
- C27H37N3O8S
- Structure:
- Chemical Name:
- Deschloroaripiprazole
- CAS:
- 203395-81-7
- MF:
- C23H28ClN3O2
- Structure:
- Chemical Name:
- O-[(Guanin-9-yl)Methyl] Acyclovir
- CAS:
- 166762-90-9
- MF:
- C14H16N10O4
- Structure:
- Chemical Name:
- 3-(4-Carboethoxy)phenyl propanal
- CAS:
- 151864-81-2
- MF:
- C12H14O3
- Structure:
- Chemical Name:
- (2,6-Xylyloxy)acetyl Lopinavir
- CAS:
- 943250-65-5
- MF:
- C47H58N4O7
- Structure:
- Chemical Name:
- (S)-IsotiMolol (TiMolol IMpurity B)
- CAS:
- 158636-96-5
- MF:
- C13H24N4O3S
- Chemical Name:
- Afatinib IMpurity A
- Chemical Name:
- Afatinib IMpurity G
- Chemical Name:
- Articaine IMpurity F (Articaine Acid PropionaMide HCl)
- Structure:
- Chemical Name:
- Avanafil iMpurity 4
- CAS:
- 874482-97-0
- MF:
- C8H11Cl2NO
- Structure:
- Chemical Name:
- Clopidogrel IMpurity 4
- CAS:
- 801319-16-4
- MF:
- C15H14ClNO2S
- Structure:
- Chemical Name:
- Dehydro Azelnidipine
- CAS:
- 918659-10-6
- MF:
- C33H32N4O6
- Structure:
- Chemical Name:
- DiazepaM IMpurity F
- CAS:
- 31269-33-7
- MF:
- C16H13ClN2O
- Chemical Name:
- LaMotrigine IMpurity
- Structure:
- Chemical Name:
- Posaconazole DiastereoisoMer interMediate 5
- CAS:
- 149809-42-7
- MF:
- C21H21F2N3O4S
- Structure:
- Chemical Name:
- Prasugrel alpha-Hydroxy IMpurity
- CAS:
- 1100905-45-0
- MF:
- C11H11FO2
- Structure:
- Chemical Name:
- Solifenacin Related CoMpound 2 Succinate
- CAS:
- 1262506-09-1
- MF:
- C27H32N2O6
- Structure:
- Chemical Name:
- Tetrahydro FuroseMide
- CAS:
- 4793-38-8
- MF:
- C12H15ClN2O5S
- Structure:
- Chemical Name:
- 6-O-DesMethoxyethyl-6-O-chloroethyl Erlotinib Hydrochloride
- CAS:
- 183320-04-9
- MF:
- C21H21Cl2N3O3
- Structure:
- Chemical Name:
- Macitentan IMpurity
- CAS:
- 556796-88-4
- MF:
- C17H15Br2N5O4S
- Structure:
- Chemical Name:
- 4-((4-broMophenyl)(1H-1,2,4-triazol-1-yl)Methyl)benzonitrile
- CAS:
- 143030-54-0
- MF:
- C16H11BrN4
- Structure:
- Chemical Name:
- Acetic acid, 2-[2-[4-(diphenylMethyl)-1-piperazinyl]ethoxy]-
- CAS:
- 83881-53-2
- MF:
- C21H26N2O3
- Structure:
- Chemical Name:
- AlMotriptan Related CoMpound B
- CAS:
- 1246860-65-0
- MF:
- C19H25N3O6S
- Chemical Name:
- Benazepril Related CoMpound B
- Chemical Name:
- Ipragliflozin Impurity 6
- Structure:
- Chemical Name:
- Ibrutinib Impurity 27
- CAS:
- 2031255-26-0
- MF:
- C26H28N6O3
- Structure:
- Chemical Name:
- Clopidogrel Impurity 59
- CAS:
- 1122047-98-6
- MF:
- C25H26ClNO6S
- Chemical Name:
- Ozagrel Impurity B
- Chemical Name:
- Ceftriaxone Sodium impurity F
- Structure:
- Chemical Name:
- (R)-5-(2-fluoro-3-methoxyphenyl)-1-(2-fluoro-6-(trifluoromethyl)benzyl)-6-methyl-3-(2-(2-oxopyrrolidin-1-yl)-2-phenylethyl)pyrimidine-2,4(1H,3H)-dione
- CAS:
- 2248628-93-3
- MF:
- C32H28F5N3O4
- Structure:
- Chemical Name:
- Famotidine EP Impurity I HCl
- MF:
- C8H15N7O2S3
- Structure:
- Chemical Name:
- Tizanidine EP Impurity C
- CAS:
- 1147548-83-1
- MF:
- C16H14Cl2N10S2
- Chemical Name:
- nicergoline impurity Q
- Structure:
- Chemical Name:
- Loratadine Impurity 19
- CAS:
- 79779-58-1
- MF:
- C22H24N2O2
- Structure:
- Chemical Name:
- (Z)-2-chloro-3-hydroxyacrylaldehyde
- CAS:
- 50704-42-2
- MF:
- C3H3ClO2
- Chemical Name:
- (trans)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4''-fluoro-[1,1''-biphenyl]-4-yl)-1-methylpiperidine hydrochloride
- Chemical Name:
- Ticagrelor Related Compound 39
- Chemical Name:
- Erlotinib Impurity 32
- Chemical Name:
- Pramipexole Impurity 36
- Chemical Name:
- Teneligliptin Impurity 3
- Chemical Name:
- Erlotinib Hydrochloride iMpurity 52
- Structure:
- Chemical Name:
- Ornidazole Impurity J
- CAS:
- 742020-47-9
- MF:
- C7H12N4O3