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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:2,8-Dichloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-β]pyridin-11-one
- CAS:133330-61-7
- MF:C14H9Cl2NO
- Structure:
- Chemical Name:2-Isopropyl-6-propylphenol (Propofol Impurity O)
- CAS:74663-48-2
- MF:C12H18O
- Structure:
- Chemical Name:3-Methyl-2-(3,4-dimethoxyphenyl)butyronitrile
- CAS:20850-49-1
- MF:C13H17NO2
- Structure:
- Chemical Name:HYDROXY ITRACONAZOLE
- CAS:112559-91-8
- MF:C35H38Cl2N8O5
- Chemical Name:N-nitroso-levomethoate 1
- CAS:
- MF:
- Structure:
- Chemical Name:1-HEXADECANOYL-2-(P-NITROPHENOXYSUCCINOYL)-SN-GLYCERYL-3-PHOSPHORYLCHOLINE
- CAS:170569-87-6
- MF:C16H12F3N3O2S
- Structure:
- Chemical Name:N-methyl-N-(4-nitrophenyl)-2-(piperazin-1-yl)acetamide
- CAS:1038972-16-5
- MF:C13H18N4O3
- Structure:
- Chemical Name:1,4-BIS[3,4-DIHYDRO-2(1H)-QUINOLINON-7-OXY]BUTANE
- CAS:882880-12-8
- MF:C22H24N2O4
- Structure:
- Chemical Name:(R)-SN-38
- CAS:647852-82-2
- MF:C22H20N2O5
- Structure:
- Chemical Name:5'-Deoxy-5-fluoro-N4-(isopentyloxycarbonyl)cytidine
- CAS:162204-30-0
- MF:C15H22FN3O6
- Chemical Name:Bumetanide iMpurity F
- CAS:
- MF:
- Structure:
- Chemical Name:IODIXANOL RELATED COMPOUND D (50 MG) (5-[ACETYL(2-HYDROXY-3-METHYLPROPYL)AMINO]-N,N'-BIS(2,3-DIHYDROXYPROPYL)2,4,6-TRIIODO-1,3-BENZE-NEDICARBOXAMIDE)
- CAS:89797-00-2
- MF:C20H28I3N3O9
- Structure:
- Chemical Name:NIMODIPINE RELATED COMPOUND B (50 MG) (BIS(2-METHOXYETHYL) 2,6-DIMETHYL-4-(3-NITROPHE-NYL)-1,4-DIHYDROPYRIDINE-3,5-DICARBOXYLATE) (AS)
- CAS:70172-96-2
- MF:C21H26N2O8
- Structure:
- Chemical Name:Methyl-5-chlorothiophene-2-carboxylate
- CAS:35475-03-7
- MF:C6H5ClO2S
- Structure:
- Chemical Name:2,3,5,6-tetradeuterio-4-[5-[4-(hydroxymethyl)phenyl]-3-(trifluoromethyl)pyrazol-1-yl]benzenesulfonamide
- CAS:1276524-56-1
- MF:C17H10D4F3N3O3S
- Structure:
- Chemical Name:1,1-diphenylpropan-1-ol
- CAS:5180-33-6
- MF:C15H16O
- Structure:
- Chemical Name:1-METHYL-2-PHENOXYETHYLAMINE
- CAS:35205-54-0
- MF:C9H13NO
- Chemical Name:SULPIRIDE IMPURITY B
- CAS:
- MF:
- Structure:
- Chemical Name:3-(7,8-dimethoxy-2-oxo-1,2,4,5-tetrahydro-3H-benzo[d]azepin-3-yl)-N-(((S)-3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)-N-methylpropan-1-amine oxide
- CAS:2511244-97-4
- MF:C27H36N2O6
- Structure:
- Chemical Name:2,4,6,3',5'-pentamethoxybiphenyl
- CAS:84212-55-5
- MF:C17H20O5
- Chemical Name:Labetalol EP Impurity I
- CAS:
- MF:
- Chemical Name:(Asp4)-Carbetocin (Impurity G)
- CAS:
- MF:
- Structure:
- Chemical Name:Sulfamide, N-[5-(4-bromophenyl)-6-[2-[(5-chloro-2-pyrimidinyl)oxy]ethoxy]-4-pyrimidinyl]-N'-propyl-
- CAS:2443747-63-3
- MF:C19H20BrClN6O4S
- Structure:
- Chemical Name:methyl 3-oxo1,2-benzisothiazole-2(3H)-acetate 1,1-dioxide
- CAS:6639-62-9
- MF:C10H9NO5S
- Structure:
- Chemical Name:(6R-cis)-3-(hydroxymethyl)-7-methoxy-8-oxo-7-(2-thienylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
- CAS:54333-94-7
- MF:C15H16N2O6S2
- Structure:
- Chemical Name:5-acetyl-1,3-phenylene bis(dimethylcarbamate)
- CAS:81732-48-1
- MF:C14H18N2O5
- Chemical Name:Oseltamivir Impurity L
- CAS:
- MF:
- Structure:
- Chemical Name:1,4-Naphthalenediol, 2-methyl-, 4-acetate
- CAS:110327-29-2
- MF:C13H12O3
- Chemical Name:Oseltamivir Impurity 105
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 77
- CAS:
- MF:
- Chemical Name:Imidapril Impurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Betamethasone EP Impurity G
- CAS:85700-75-0
- MF:C22H30O5
- Chemical Name:Crisaborole Impurity ABCDEFGHJKL
- CAS:
- MF:
- Structure:
- Chemical Name:3-Azetidinecarboxylic acid, 1-[(4-acetyl-2-ethylphenyl)methyl]-
- CAS:2474774-17-7
- MF:C15H19NO3
- Structure:
- Chemical Name:2,3'-Bipyridine, 5-chloro-3-[4-(methylsulfonyl)phenyl]-, hydrochloride (1:1)
- CAS:202409-39-0
- MF:C17H14Cl2N2O2S
- Chemical Name:2-amino-4-(2-(benzyl(1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)phenol
- CAS:
- MF:
- Chemical Name:Peramivir Deacetyl Impurity
- CAS:
- MF:
- Chemical Name:Empagliflozin Impurity 116
- CAS:
- MF:
- Chemical Name:(3R,5aS)-5,8-dioxooctahydro-5H-pyrrolo[1,2-a]thiazolo[3,2-d]pyrazine-3-carboxylic acid
- CAS:
- MF:
- Structure:
- Chemical Name:1,5-Benzothiazepin-4(5H)-one, 3-(acetyloxy)-5-[2-(dimethylamino)ethyl]-2,3-dihydro-2-(4-methoxyphenyl)-, (2S-trans)-
- CAS:111188-70-6
- MF:C22H26N2O4S
- Structure:
- Chemical Name:1H-Benzimidazole-2-sulfinicacid(9CI)
- CAS:58536-71-3
- MF:C7H6N2O2S
- Structure:
- Chemical Name:1(3H)-Isobenzofuranone,3-methyl-(9CI)
- CAS:3453-64-3
- MF:C9H8O2
- Structure:
- Chemical Name:3-ETHOXY-4-METHOXYBENZOIC ACID
- CAS:2651-55-0
- MF:C10H12O4
- Structure:
- Chemical Name:4-hydroxyurapidil
- CAS:88733-12-4
- MF:C20H29N5O4
- Structure:
- Chemical Name:2-chloro-4-nitrophenyl-N-acetylglucosaminide
- CAS:103614-82-0
- MF:C14H17ClN2O8
- Structure:
- Chemical Name:desisopropylprocaterol
- CAS:63483-95-4
- MF:C13H16N2O3
- Chemical Name:DMT-2'-O-4'-C-Locked-G(iBu)-CE
- CAS:
- MF:
- Structure:
- Chemical Name:10-bromocarbamazepine
- CAS:59690-97-0
- MF:C15H11BrN2O
- Structure:
- Chemical Name:ethyl apovincaminate
- CAS:42971-12-0
- MF:C22H26N2O2
- Structure:
- Chemical Name:Osimertinib Impurity 15
- CAS:2945220-41-5
- MF:C56H66N14O4
- Structure:
- Chemical Name:1,2-Cyclopropanedimethanol, 1-(3-fluorophenyl)-, 1,2-diacetate, (1S,2R)-
- CAS:1369768-30-8
- MF:C15H17FO4
- Structure:
- Chemical Name:ALS 8123
- CAS:81148-15-4
- MF:C15H23NO4
- Structure:
- Chemical Name:Ro 14-7437
- CAS:78756-03-3
- MF:C15H15N3O3
- Chemical Name:Phospholipid Impurity 1(DPPE-MPEG5000 Impurity 1)
- CAS:
- MF:
- Chemical Name:Carbazochrome Sodium Sulfonate Impurity 4
- CAS:
- MF:
- Chemical Name:Empagliflozin Furanose Impurity
- CAS:
- MF:
- Chemical Name:Rosuvastatin Impurity 144
- CAS:
- MF:
- Chemical Name:Cetrorelix Impurity 11
- CAS:
- MF:
- Chemical Name:Cetrorelix Impurity 4 (8-D-Arg)
- CAS:
- MF:
- Chemical Name:Cetrorelix Impurity 1 (+L-Arg)
- CAS:
- MF:
- Chemical Name:Peramivir Intermediate Impurity 36
- CAS:
- MF:
- Chemical Name:Peramivir Intermediate Impurity 41
- CAS:
- MF:
- Chemical Name:Peramivir Impurity 999
- CAS:
- MF:
- Chemical Name:Palonosetron impurity 20XH
- CAS:
- MF:
- Chemical Name:Apixaban Impurity 89
- CAS:
- MF:
- Chemical Name:Levofloxacin benzopazine impurity
- CAS:
- MF:
- Structure:
- Chemical Name:Bumetanide Impurity 14
- CAS:1431501-10-8
- MF:C21H27NO3
- Chemical Name:Trans,rel-(1R,4R)-4-{[(2-Aminophenyl)methyl]amino}cyclohexan-1-ol Hydrochloride
- CAS:
- MF:
- Chemical Name:Sugammadex Sodium Impurity 08
- CAS:
- MF:
- Chemical Name:2-bromo-3-(6'-oxo-1'-phenyl-1',6'-dihydro-[2,3'-bipyridin]-5'-yl)benzonitrile
- CAS:
- MF:
- Structure:
- Chemical Name:Org199425-1（RRT0.59）
- CAS:2412953-12-7
- MF:C72H112O49S8
- Structure:
- Chemical Name:4a(2H)-Isoquinolinol, octahydro-4-(4-methoxyphenyl)-2-methyl-
- CAS:2568340-30-5
- MF:C17H25NO2
- Structure:
- Chemical Name:3-Quinolinecarbonitrile, 4-[(2,4-dichloro-5-hydroxyphenyl)amino]-6-methoxy-7-[3-(4-methyl-1-piperazinyl)propoxy]-
- CAS:2468737-92-8
- MF:C25H27Cl2N5O3
- Structure:
- Chemical Name:Uridine, 4-oxime, 5'-(2-methylpropanoate), (4E)-
- CAS:2492423-30-8
- MF:C13H19N3O7
- Chemical Name:Empagliflozin Furanose Impurity
- CAS:
- MF:
- Chemical Name:Tazobactam Impurity XTE
- CAS:
- MF:
- Chemical Name:Isavuconazole Impurity 46
- CAS:
- MF:
- Structure:
- Chemical Name:5-(1-((5,6-diethyl-2,3-dihydro-1H-inden-2-yl)amino)-2-hydroxyethyl)-8-hydroxyquinolin-2(1H)-one
- CAS:2226428-25-5
- MF:C24H28N2O3
- Structure:
- Chemical Name:3-Pyrrolidinepropanoic acid, α-[[(1,1-dimethylethoxy)carbonyl]amino]-2-oxo-, methyl ester, (αR,3R)-rel-
- CAS:2740235-22-5
- MF:C13H22N2O5
- Structure:
- Chemical Name:2-(4-ethylpiperazin-1-yl)-4-(2-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine
- CAS:
- MF:C23H30FN3
- Structure:
- Chemical Name:1-Naphthalenamine, 4-(2,3-dichlorophenyl)-1,2,3,4-tetrahydro-N-methyl-, (1R,4S)-rel-
- CAS:2184053-08-3
- MF:C17H17Cl2N
- Chemical Name:Rosuvastatin Impurity 152
- CAS:
- MF:
- Structure:
- Chemical Name:1-[4-(2-AZEPAN-1-YL-ETHOXY)-BENZYL]-5-BENZYLOXY-2-(4-BENZYLOXY-PHENYL)-3-METHYL-1H-INDOLE
- CAS:198480-21-6
- MF:C44H46N2O3
- Structure:
- Chemical Name:6-Heptenoic acid, 7-[2-cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-, 1,1-dimethylethyl ester, (3S,5R,6E)-
- CAS:2273873-66-6
- MF:C29H32FNO4
- Structure:
- Chemical Name:2H-1,4-Benzoxazin-3(4H)-one, 8-(2-chloro-1-hydroxyethyl)-6-(phenylmethoxy)-
- CAS:2383660-53-3
- MF:C17H16ClNO4
- Chemical Name:4-chloro-N-(3-chloro-4-fluorophenyl)-8-nitroquinazolin-7-amine
- CAS:
- MF:
- Chemical Name:Isavuconazole Impurity 40
- CAS:
- MF:
- Structure:
- Chemical Name:2,3'-Bipyridine, 5-chloro-6'-methyl-3-[4-(methylsulfonyl)phenyl]-, 1,1'-dioxide
- CAS:2724840-93-9
- MF:C18H15ClN2O4S
- Chemical Name:Vitamin K1 Impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:1,3-Dioxo-2-isoindolineaceticacid
- CAS:6296-53-3
- MF:C10H7NO4
- Structure:
- Chemical Name:1-(4-Bromo-2-(hydroxymethyl)phenyl)-4-(dimethylamino)-1-(4-fluorophenyl)butan-1-olhydrochloride
- CAS:488148-10-3
- MF:C19H23BrFNO2
- Chemical Name:Bisoprolol Impurity 42
- CAS:
- MF:
- Chemical Name:Peramivir Impurity 31(R)
- CAS:
- MF:
- Chemical Name:Roxatidine Impurity 10
- CAS:
- MF:
- Structure:
- Chemical Name:2H-Pyrido[3,4-h]-1,4-benzoxazin-3(4H)-one, 7,8,9,10-tetrahydro-6,10-dihydroxy-8-[2-(4-methoxyphenyl)-1,1-dimethylethyl]-
- CAS:2727170-18-3
- MF:C22H26N2O5
- Structure:
- Chemical Name:Vildagliptin Chloroacetyl Nitrile (R)-Isomer
- CAS:565452-98-4
- MF:C7H9ClN2O