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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Vitamin E Impurity 3
- CAS:1560705-69-2
- MF:C29H50O2
- Structure:
- Chemical Name:(trans)-phenyl3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4'-fluoro-[1,1'-biphenyl]-3-yl)piperidine-1-carboxylate
- CAS:
- MF:C32H28FNO5
- Chemical Name:arformoterol tartrate impurity
- CAS:
- MF:
- Chemical Name:arformoterol tartrate impurity
- CAS:
- MF:
- Chemical Name:Cefraprazole impurity
- CAS:
- MF:
- Chemical Name:Afatinib Impurity QAQ
- CAS:
- MF:
- Chemical Name:Afatinib Impurity QAQ
- CAS:
- MF:
- Structure:
- Chemical Name:Afatinib Impurity SHO
- CAS:2223677-65-2
- MF:C38H30Cl2F2N8O6
- Structure:
- Chemical Name:Afatinib Impurity SHO
- CAS:2223677-65-2
- MF:C38H30Cl2F2N8O6
- Structure:
- Chemical Name:Androstan-17-one,3-[[(4-methylphenyl)sulfonyl]oxy]-,(3,5)-
- CAS:10429-07-9
- MF:C26H36O4S
- Structure:
- Chemical Name:Cabozantinib Impurity 48
- CAS:202916-99-2
- MF:C17H15NO3
- Chemical Name:Landiolol impurity R
- CAS:
- MF:
- Structure:
- Chemical Name:6-Oxo-Palonosetron
- CAS:848074-10-2
- MF:C19H22N2O2
- Chemical Name:Teneligliptin Impurity 8
- CAS:
- MF:
- Chemical Name:(trans)-4-(4'-fluoro-[1,1'-biphenyl]-3-yl)-1-methylpiperidin-3-yl) methanol
- CAS:
- MF:
- Structure:
- Chemical Name:2,4(1H,3H)-Pyrimidinedione, 3-[[2-fluoro-6-(trifluoromethyl)phenyl]methyl]-6-methyl-
- CAS:2354391-45-8
- MF:C13H10F4N2O2
- Structure:
- Chemical Name:Cyclopropane, nitroso-
- CAS:28017-92-7
- MF:C3H5NO
- Chemical Name:Hyoscine Butylbromide EP Impurity D
- CAS:
- MF:
- Structure:
- Chemical Name:(E)-4-BROMO-N,N-DIMETHYLBUT-2-ENAMIDE
- CAS:137131-09-0
- MF:C6H10BrNO
- Structure:
- Chemical Name:(E)-4-BROMO-N,N-DIMETHYLBUT-2-ENAMIDE
- CAS:137131-09-0
- MF:C6H10BrNO
- Structure:
- Chemical Name:Almotriptan Impurity 1
- CAS:334981-13-4
- MF:C17H25N3O3S
- Structure:
- Chemical Name:Almotriptan Impurity 1
- CAS:334981-13-4
- MF:C17H25N3O3S
- Structure:
- Chemical Name:Amlodipine Impurity 33
- CAS:
- MF:C26H31ClN2O8S
- Chemical Name:Erlotinib Impurity 36 HCl
- CAS:
- MF:
- Chemical Name:Carbetocin Impurity 1
- CAS:
- MF:
- Chemical Name:Carboprost Trometamol Impurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Procaine Impurity 2
- CAS:
- MF:C13H20N2O2
- Structure:
- Chemical Name:Triphenylmethanol (Zidovudine impurity)
- CAS:
- MF:C19H16O
- Structure:
- Chemical Name:Benzenesulfonamide, 2-(5-methyl-3-phenyl-4-isoxazolyl)-
- CAS:2304623-35-4
- MF:C16H14N2O3S
- Structure:
- Chemical Name:Amylmetacresol EP impurity A
- CAS:876473-73-3
- MF:C12H18O
- Structure:
- Chemical Name:5-methyl-2-(2-methylbutyl)phenol
- CAS:
- MF:C12H18O
- Chemical Name:N-(4-methyl-3-((5-(pyridin-3-yl)
- CAS:
- MF:
- Chemical Name:7-methyl-3,4-dihydropyrimido
- CAS:
- MF:
- Structure:
- Chemical Name:4'-hydroxy-3'-nitro-[1,1'-biphenyl]-3-carboxylic acid
- CAS:1097777-60-0
- MF:C13H9NO5
- Chemical Name:Dapagliflozin Impurity (MW: 425Da)
- CAS:
- MF:
- Chemical Name:Sugammadex Monochloro Impurity
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity (MW:468Da)
- CAS:
- MF:
- Chemical Name:Levothyroxine – Impurity 5
- CAS:
- MF:
- Chemical Name:Ibuprofen IPA impurity
- CAS:
- MF:
- Structure:
- Chemical Name:Voriconazole Impurity 19
- CAS:321589-01-9
- MF:C26H28F3N5O4S
- Chemical Name:Salbutamol Impurity 38
- CAS:
- MF:
- Chemical Name:Gadobutrol Impurity 4 (Gd-DOTA)
- CAS:
- MF:
- Chemical Name:Losartan Impurity 3
- CAS:
- MF:
- Structure:
- Chemical Name:methyl 2-((4R,6R)-6-(2-(2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4- (phenylcarbamoyl)-1H-pyrrol-1-yl)ethyl)-2,2-dimethyl-1,3-dioxan-4- yl)acetate
- CAS:1353049-81-6
- MF:C37H41FN2O5
- Chemical Name:Cilastatin EP Impurity G
- CAS:
- MF:
- Structure:
- Chemical Name:Rosuvastatin Impurity 122
- CAS:135999-58-5
- MF:C6H7ClO3
- Chemical Name:Anastrozole Impurity IV
- CAS:
- MF:
- Chemical Name:Anastrozole Impurity IV
- CAS:
- MF:
- Chemical Name:NA
- CAS:
- MF:
- Chemical Name:NA
- CAS:
- MF:
- Chemical Name:Tinidazole Impurity B
- CAS:
- MF:
- Structure:
- Chemical Name:Apremilast Impurity 19
- CAS:2201974-01-6
- MF:C22H24N2O7S
- Structure:
- Chemical Name:Nimodipine Metabolite 3
- CAS:82219-48-5
- MF:C20H22N2O7
- Structure:
- Chemical Name:N-DEMETHYLROXITHROMYCIN
- CAS:118267-18-8
- MF:C40H74N2O15
- Structure:
- Chemical Name:Rasagiline Impurity 6 HCl
- CAS:138911-07-6
- MF:C9H11NO
- Structure:
- Chemical Name:Taladafil impurity
- CAS:1356345-67-9
- MF:C23H23N3O4
- Structure:
- Chemical Name:Mirabegron 2-Oxo Impurity
- CAS:1684453-05-1
- MF:C21H22N4O3S
- Structure:
- Chemical Name:Riluzole 4-Bromo Impurity
- CAS:144631-82-3
- MF:C8H4BrF3N2OS
- Structure:
- Chemical Name:Furosemide Impurity 8
- CAS:41332-59-6
- MF:C7H4Cl2O5S
- Structure:
- Chemical Name:Irinotecan Impurity 29
- CAS:797762-11-9
- MF:C22H24N2O4
- Chemical Name:Empagliflozin Impurity 41
- CAS:
- MF:
- Chemical Name:Empagliflozin Impurity 47
- CAS:
- MF:
- Structure:
- Chemical Name:Irbesartan
- CAS:141745-36-0
- MF:C23H26N6O
- Structure:
- Chemical Name:Aprepitant
- CAS:170902-80-4
- MF:C20H18F7NO2
- Structure:
- Chemical Name:Pranoprofen Impurity 5
- CAS:145986-74-9
- MF:C16H15NO3
- Structure:
- Chemical Name:Fluconazole Impurity
- CAS:1609495-95-5
- MF:C15H14FN9O
- Structure:
- Chemical Name:1,4-bis(4-((1,4,8,11-tetraazacyclotetradecan-1-yl)methyl)benzyl)- 1,4,8,11-tetraazacyclotetradecane dodecahydrochloride
- CAS:
- MF:C46H96Cl12N12
- Chemical Name:Entacapone Impurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:Apremilast Impurity 15
- CAS:2096492-41-8
- MF:C22H26N2O8S
- Structure:
- Chemical Name:Erythromycin EP Impurity L
- CAS:127955-44-6
- MF:C37H65NO14
- Structure:
- Chemical Name:Levetiracetam impurity 1
- CAS:1342566-28-2
- MF:C8H16N2O3
- Structure:
- Chemical Name:2-(3-(Trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)acetohydrazide hydrochloride
- CAS:1485732-85-1
- MF:C8H11F3N6O
- Structure:
- Chemical Name:(R)-N-(1-(3-(2-cyano-5-fluorobenzyl)-1-methyl-2,6-dioxo- 1,2,3,6-tetrahydropyrimidin-4-yl)piperidin-3-yl)formamide
- CAS:2087874-91-5
- MF:C19H20FN5O3
- Chemical Name:Abiraterone Impurity 12
- CAS:
- MF:
- Chemical Name:Atracurium Impurity O
- CAS:
- MF:
- Chemical Name:Emtricitabine Impurity F
- CAS:
- MF:
- Structure:
- Chemical Name:Pitavastatin Impurity 44
- CAS:586966-55-4
- MF:C29H32FNO4
- Chemical Name:Tirofiban Impurity F
- CAS:
- MF:
- Chemical Name:Tofacitinib Impurity 74
- CAS:
- MF:
- Chemical Name:Tofacitinib Impurity 83
- CAS:
- MF:
- Structure:
- Chemical Name:Apixaban Impurity 31
- CAS:2458079-10-0
- MF:C27H30N4O6
- Chemical Name:Apixaban Impurity 38
- CAS:
- MF:
- Chemical Name:Atracurium Impurity 4
- CAS:
- MF:
- Chemical Name:Aztreonam Impurity 4
- CAS:
- MF:
- Structure:
- Chemical Name:Bendamustine Impurity 29
- CAS:847588-86-7
- MF:C19H22N6
- Chemical Name:Bendamustine Impurity 35
- CAS:
- MF:
- Chemical Name:Cefoxitin Impurity 3
- CAS:
- MF:
- Chemical Name:Doripenem Impurity 5
- CAS:
- MF:
- Chemical Name:Erlotinib Impurity 47
- CAS:
- MF:
- Structure:
- Chemical Name:Etoposide EP Impurity A
- CAS:124151-67-3
- MF:C37H38O15
- Chemical Name:Lamivudine Impurity 5
- CAS:
- MF:
- Structure:
- Chemical Name:Lercanidipine Impurity 25
- CAS:100427-22-3
- MF:C36H41N3O6
- Chemical Name:Oseltamivir Impurity 30
- CAS:
- MF:
- Structure:
- Chemical Name:Pitavastatin Impurity 25
- CAS:1356998-79-2
- MF:C19H16FN
- Chemical Name:Rocuronium Bromide Impurity 16
- CAS:
- MF:
- Chemical Name:Rocuronium Bromide Impurity 25
- CAS:
- MF:
- Structure:
- Chemical Name:Telmisartan Impurity 5
- CAS:885046-20-8
- MF:C19H19ClN4
- Structure:
- Chemical Name:Tinidazole Impurity 2
- CAS:140165-55-5
- MF:C6H12N2O4S
- Structure:
- Chemical Name:3-[3-({[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl}(methyl)amino)propyl]-7,8-dimethoxy-1,3-dihydro-2H-3-benzazepin-2-one hydrochloride
- CAS:1086026-38-1
- MF:C27H34N2O5*ClH
- Structure:
- Chemical Name:Amoxicillin Impurity Z
- CAS:
- MF:C16H19N3O5S