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Pharmaceutical Impurity Reference Standards
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- 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
- Structure:
- Chemical Name:
- Daidzein-4′-glucoside
- CAS:
- 58970-69-7
- MF:
- C21H20O9
- Chemical Name:
- Aprepitant iMpurity 45
- Structure:
- Chemical Name:
- Afatinib Impurity 75
- CAS:
- 2348580-72-1
- MF:
- C7H14N2O
- Structure:
- Chemical Name:
- Androstan-17-one,2,3-epoxy-16-(1-pyrrolidinyl)
- CAS:
- 159325-45-8
- MF:
- C23H35NO2
- Structure:
- Chemical Name:
- (2b,3a,16b,17b)-2,16-Bispiperidino-3,17-diacetoxy-5-androstane
- CAS:
- 13529-31-2
- MF:
- C33H54N2O4
- Structure:
- Chemical Name:
- Palbociclib Impurity 59
- CAS:
- 1430196-98-7
- MF:
- C14H20N4O4
- Chemical Name:
- Landiolol impurity Z
- Structure:
- Chemical Name:
- Vitamin K1 Impurity 1
- CAS:
- 19274-66-9
- MF:
- C31H46O2
- Chemical Name:
- Teneligliptin Impurity 13
- Structure:
- Chemical Name:
- Ceftazidime EP Impurity D
- CAS:
- 73547-69-0
- MF:
- C45H44N6O7S2
- Structure:
- Chemical Name:
- Nicergoline EP Impurity G
- CAS:
- 57935-65-6
- MF:
- C23H24BrN3O2
- Structure:
- Chemical Name:
- Benzenesulfonamide, 4-[5-(4-methylphenyl)-2-oxido-3-(trifluoromethyl)-1H-pyrazol-1-yl]-
- CAS:
- 2356153-95-0
- MF:
- C17H14F3N3O3S
- Structure:
- Chemical Name:
- 2-Pyrrolidinecarbonitrile, 1-(2-aminoacetyl)-, hydrochloride (1:1), (2S)-
- CAS:
- 913980-23-1
- MF:
- C7H12ClN3O
- Structure:
- Chemical Name:
- Lamivudine Impurity 7
- CAS:
- 147126-63-4
- MF:
- C14H24O4S
- Structure:
- Chemical Name:
- (2S,3S,5S)-2-Hexyl-3,5-dihydroxyhexadecanoic Acid
- CAS:
- 130793-30-5
- MF:
- C22H44O4
- Structure:
- Chemical Name:
- Ribavirin Related Compound A (15 mg) (1-beta-D-ribofuranosyl-1H-1,2,4-triazole-3-carboxylic acid)
- CAS:
- 39925-19-4
- MF:
- C8H11N3O6
- Structure:
- Chemical Name:
- 4-(CHLOROMETHYL)BENZYL ALCOHOL 99
- CAS:
- 16473-35-1
- MF:
- C8H9ClO
- Structure:
- Chemical Name:
- 4,4′-DIPHENOQUINONE (DQ)
- CAS:
- 494-72-4
- MF:
- C12H8O2
- Structure:
- Chemical Name:
- S-(+)-O-DESMETHYL VENLAFAXINE
- CAS:
- 142761-12-4
- MF:
- C16H25NO2
- Structure:
- Chemical Name:
- ACETYLSIMVASTATIN
- CAS:
- 145576-25-6
- MF:
- C27H40O6
- Structure:
- Chemical Name:
- 5-[2-(4'-METHYLBIPHENYL)]TETRAZOLE
- CAS:
- 120568-11-8
- MF:
- C14H12N4
- Structure:
- Chemical Name:
- L-2-Aminobutanamide
- CAS:
- 7324-11-0
- MF:
- C4H10N2O
- Chemical Name:
- AMIKACIN IMPURITY A
- Structure:
- Chemical Name:
- EsCitalopram EP Impurity I
- CAS:
- 1370643-22-3
- MF:
- C20H21FN2O
- Structure:
- Chemical Name:
- (trans)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4-methoxyphenyl)-1-methylpiperidine
- CAS:
- 127017-42-9
- MF:
- C21H25NO4
- Structure:
- Chemical Name:
- Methylprednisolone Impurity 21
- CAS:
- 150899-33-5
- MF:
- C22H28O4
- Structure:
- Chemical Name:
- Epinephrine Impurity 7
- CAS:
- 62322-82-1
- MF:
- C9H11NO3
- Structure:
- Chemical Name:
- (trans)-4-((2-amino-4,6-dibromobenzyl)amino)cyclohexanol
- MF:
- C13H18Br2N2O
- Chemical Name:
- Fesoterodine Impurity 14
- Chemical Name:
- Dexamethasone EP impurities E
- Structure:
- Chemical Name:
- (R)-N-((S)-2-aminobutanoyl)-3-(bromomethyl)hexanamide
- MF:
- C11H21BrN2O2
- Chemical Name:
- Empagliflozin Impurity 57（R,R）
- Structure:
- Chemical Name:
- Azacitidine Impurity 37
- CAS:
- 206269-46-7
- MF:
- C8H12N4O5
- Chemical Name:
- Aripiprazole peroxide degradation Impurity (MW:303Da)
- Chemical Name:
- Pramipexole Impurity Reference
- Chemical Name:
- 2,2'-(4,10-bis((trans)-1,3,4-trihydroxybutan-2-yl)-1,4,7,10-tetraazacyclododecane-1,7-diyl)diacetic acid Gd3+
- Structure:
- Chemical Name:
- 3-[4-(acetyloxymethyl)phenyl]-2-propenoic acid methyl ester
- CAS:
- 100688-45-7
- MF:
- C13H14O4
- Structure:
- Chemical Name:
- Acetaminophen Impurity 14
- CAS:
- 1991204-56-8
- MF:
- C16H18N2O2
- Structure:
- Chemical Name:
- Ketoconazole Impurity 7
- CAS:
- 172032-21-2
- MF:
- C11H12Cl2O3
- Chemical Name:
- Rosuvastatin Impurity 59
- Structure:
- Chemical Name:
- Losartan Impurity 12
- CAS:
- 727718-93-6
- MF:
- C22H22ClN9
- Structure:
- Chemical Name:
- benzyl (2S)-2-amino-3-(4-methanesulfonylphenyl)propanoate hydrochloride
- CAS:
- 1865726-28-8
- MF:
- C17H19NO4S
- Structure:
- Chemical Name:
- Glycopyrrolate Impurity 12
- CAS:
- 857353-41-4
- MF:
- C13H14O3
- Structure:
- Chemical Name:
- (4S,4aR,5R,12aS)-4-(dimethylamino)-3,5,10,11,12a-pentahydroxy-6-methyl-1,12-dioxo-1,4,4a,5,12,12a-hexahydrotetracene-2-carboxamide
- CAS:
- 4660-26-8
- MF:
- C22H22N2O8
- Chemical Name:
- Regorafenib Impurity 38
- Chemical Name:
- Cefazolin Impurity 28
- Chemical Name:
- 4-Isobutylacetophenone (Ibuprofen impurity)
- Structure:
- Chemical Name:
- Acarbose Impurity IV (JP)
- MF:
- C13H21NO7
- Chemical Name:
- Vonoprazan Impurity 57
- Structure:
- Chemical Name:
- Tafluprost Impurity 9
- CAS:
- 2099033-66-4
- MF:
- C27H41NO8
- Structure:
- Chemical Name:
- 1-((2R,3R)-2-(benzyloxy)pentan-3-yl)-4-(4-(4-(4-hydroxyphenyl)piperazin-1-yl)phenyl)-1H-1,2,4-triazol-5(4H)-one
- CAS:
- 2243786-01-6
- MF:
- C30H35N5O3
- Structure:
- Chemical Name:
- 5-(3-fluorophenyl)-1H-pyrrole-3-carbaldehyde
- MF:
- C11H8FNO
- Structure:
- Chemical Name:
- 1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester
- CAS:
- 21881-78-7
- MF:
- C21H26N2O6
- Structure:
- Chemical Name:
- 2-(4-Methylphenyl)sulfonyloxyethanol
- CAS:
- 42772-85-0
- MF:
- C9H12O4S
- Structure:
- Chemical Name:
- 2-Azabicyclo[3.1.0]hexane-3-carbonitrile, 2-[(2S)-2-aMino-2-(3-hydroxytricyclo[3.3.1.13,7]dec-1-yl)acetyl]-, (1R,3R,5R)-
- CAS:
- 1564265-94-6
- MF:
- C18H25N3O2
- Chemical Name:
- EMpagliflozin iMpurity 8
- Structure:
- Chemical Name:
- EMpagliflozin iMpurity 13
- CAS:
- 2125472-55-9
- MF:
- C23H25ClO8
- Structure:
- Chemical Name:
- 6-Methyldi(ondansetron-3-de(1,2-diMethyl-1H-iMidazole))
- CAS:
- 1365727-07-6
- MF:
- C27H26N2O2
- Structure:
- Chemical Name:
- (-)-Syringaresinol-4-O-beta-D-glucopyranoside
- CAS:
- 137038-13-2
- MF:
- C28H36O13
- Structure:
- Chemical Name:
- Budesonide Impurity (1, 4-Androstadien-11-beta-16-alfa-diol-3, 17-dione)
- CAS:
- 910299-74-0
- MF:
- C19H24O4
- Structure:
- Chemical Name:
- Etoricoxib Impurity 12
- CAS:
- 646459-41-8
- MF:
- C21H16ClN3O2S
- Structure:
- Chemical Name:
- Levofloxacin Tetrafluoro Impurity 2
- CAS:
- 103995-33-1
- MF:
- C14H12F4O4
- Structure:
- Chemical Name:
- Mupirocin Impurity C
- MF:
- C26H44O9
- Structure:
- Chemical Name:
- Verapamil Impurity H
- CAS:
- 67018-83-1
- MF:
- C26H36N2O4
- Structure:
- Chemical Name:
- Warfarin Impurity 1
- CAS:
- 55901-61-6
- MF:
- C13H14O
- Structure:
- Chemical Name:
- Vitexin -4''-O-glucoside
- CAS:
- 178468-00-3
- MF:
- C27H30O15
- Chemical Name:
- Aripiprazole EP impurity D
- Structure:
- Chemical Name:
- Macitentan impurity B
- CAS:
- 441796-13-0
- MF:
- C18H18Br2N6O4S
- Chemical Name:
- Meropenem IMP B
- Structure:
- Chemical Name:
- tert-butyl 4-(6-bromopyridin-3-yl)piperazine-1-carboxylate
- CAS:
- 412348-27-7
- MF:
- C14H20BrN3O2
- Structure:
- Chemical Name:
- ETHYL 3,4-EPOXYBUTANOATE
- CAS:
- 32223-97-5
- MF:
- C6H10O3
- Structure:
- Chemical Name:
- FUROSEMIDE IMPURITY A
- MF:
- C12H11ClN2O5S
- Chemical Name:
- GLICLAZIDE IMPURITY F
- Structure:
- Chemical Name:
- 3-[(2-[(E)-2-(3-ETHYL-1,3-BENZOTHIAZOL-3-IUM-2-YL)ETHENYL]-6-((E)-2-[3-ETHYL-1,3-BENZOTHIAZOL-2(3H)-YLIDENE]ETHYLIDENE)-4-METHYL-1-CYCLOHEXEN-1-YL)OXY]-1-PROPANESULFONATE
- MF:
- C32H36N2O4S3
- Chemical Name:
- Bimatoprost Impurity 15
- Structure:
- Chemical Name:
- Bisoprolol Impurity 9
- CAS:
- 59383-52-7
- MF:
- C15H25NO3
- Chemical Name:
- Empagliflozin Impurity 87
- Structure:
- Chemical Name:
- Aztreonam Impurities 06
- CAS:
- 730928-60-6
- MF:
- C26H34N10O16S4
- Chemical Name:
- sodium (4-(2-(2-amino-1-methyl-4-oxo-4,7-dihydro-1H-pyrrolo[2,3-d] pyrimidin-5-yl)ethyl)benzoyl)-L-glutamate
- Structure:
- Chemical Name:
- Lenvatinib Impurity LFZZ-9
- MF:
- C43H38Cl2N8O8
- Chemical Name:
- Rosuvastatin Impurity 118
- Chemical Name:
- Rosuvastatin Impurity 117
- Structure:
- Chemical Name:
- Cytarabine Impurity 10
- CAS:
- 84902-98-7
- MF:
- C4H6N2O3
- Chemical Name:
- Ticagrelor Impurity 108
- Structure:
- Chemical Name:
- 4-Piperidinecarboxylic acid, 1-[5-[[[4-(4-chloro-2-thienyl)-5-(4-cyclohexyl-1-piperazinyl)-2-thiazolyl]amino]carbonyl]-3-hydroxy-2-pyridinyl]-
- CAS:
- 1290121-42-4
- MF:
- C29H35ClN6O4S2
- Structure:
- Chemical Name:
- 1H-Pyrrole-3-methanamine, 1-[(1,6-dihydro-3-pyridinyl)sulfonyl]-5-(2-fluorophenyl)-N-methyl-
- CAS:
- 2416241-95-5
- MF:
- C17H18FN3O2S
- Structure:
- Chemical Name:
- Dolutegravir Impurity 8
- CAS:
- 2244161-72-4
- MF:
- C20H19F2N3O5
- Chemical Name:
- 3-((2-((tert-butoxycarbonyl)(methyl)amino)acetoxy)methyl)-2-(((1-chloroethoxy)carbonyl)(methyl)amino)pyridine 1-oxide
- Structure:
- Chemical Name:
- 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[[(aminocarbonyl)oxy]methyl]-7-methoxy-7-[[(2S)-2-methoxy-2-(2-thienyl)acetyl]amino]-8-oxo-, (6R,7S)-
- CAS:
- 2395025-37-1
- MF:
- C17H19N3O8S2
- Structure:
- Chemical Name:
- Atorvastatin Impurity 83
- CAS:
- 1807481-00-0
- MF:
- C33H35F2N2NaO5
- Structure:
- Chemical Name:
- Cyclophosphamide Impurity 20
- CAS:
- 2387771-96-0
- MF:
- C9H20ClN2O3P
- Structure:
- Chemical Name:
- Loteprednol Etabonate Ethyl Ester (Prednisolone 20-Ethyl Ester)
- CAS:
- 182069-19-8
- MF:
- C25H34O7
- Structure:
- Chemical Name:
- Hexanamide, N-[(1S)-1-(aminocarbonyl)propyl]-3-(hydroxymethyl)-, (3R)-
- CAS:
- 2252417-17-5
- MF:
- C11H22N2O3
- Structure:
- Chemical Name:
- 1H-Benzimidazole-6-carboxylic acid, 4-hydroxy-2-methyl-1-(phenylmethyl)-, ethyl ester
- CAS:
- 1640981-16-3
- MF:
- C18H18N2O3
- Structure:
- Chemical Name:
- Benzoic acid, 2-chloro-4-nitro-, 2-(diethylamino)ethyl ester
- CAS:
- 10367-96-1
- MF:
- C13H17ClN2O4