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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- N-(2-Pyridyl)oxamic Acid
- CAS:
- 13120-39-3
- MF:
- C7H6N2O3
- Structure:
- Chemical Name:
- (trans)-4-Propyl-1-methyl-L-proline
- CAS:
- 13380-36-4
- MF:
- C9H17NO2
- Structure:
- Chemical Name:
- N-Nordextromethorphan
- CAS:
- 1531-23-3
- MF:
- C17H23NO
- Structure:
- Chemical Name:
- (S,S,R,R)-Orlistat
- CAS:
- 111466-62-7
- MF:
- C29H53NO5
- Structure:
- Chemical Name:
- 17β-Carboxy-17-desoxy Dexamethasone
- CAS:
- 75262-69-0
- MF:
- C21H27FO4
- Structure:
- Chemical Name:
- 1-(dimethoxymethyl)-3-methoxybenzene
- CAS:
- 59276-28-7
- MF:
- C10H14O3
- Structure:
- Chemical Name:
- Benazepril impurity A
- MF:
- C24H28N2O5
- Structure:
- Chemical Name:
- 3S,4R-4-[phenyl-1-methylpiperidinyl] methanol
- CAS:
- 176022-03-0
- MF:
- C13H19NO
- Structure:
- Chemical Name:
- Zolmitriptan Related Compound B (20 mg) ((S)-2-Amino-3-{3-[2-(dimethylamino)ethyl]-1H-indol-5-yl}propan-1-ol)
- CAS:
- 139264-69-0
- MF:
- C15H23N3O
- Structure:
- Chemical Name:
- 1-BENZYL-N,4-DIMETHYLPIPERIDIN-3-AMINE DIHYDROCHLORIDE
- CAS:
- 384338-23-2
- MF:
- C14H22N2
- Structure:
- Chemical Name:
- (R,Z)-2-((R)-((Z)-2-(2-aMinothiazol-4-yl)-2-(hydroxyiMino)acetaMido)(carboxy)Methyl)-5-ethylidene-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
- CAS:
- 178422-39-4
- MF:
- C14H15N5O6S2
- Structure:
- Chemical Name:
- Acyclovir IMpurity C
- CAS:
- 91702-61-3
- MF:
- C8H11N5O3
- Structure:
- Chemical Name:
- Nicergoline-5-Chloro Analogue
- CAS:
- 38536-28-6
- MF:
- C24H26ClN3O3
- Structure:
- Chemical Name:
- 1-(3-aMino-5-(benzyloxy)-2-hydroxyphenyl)ethanone
- CAS:
- 861841-90-9
- MF:
- C15H15NO3
- Structure:
- Chemical Name:
- (2RS)-2-Hydroxy-2-[4-(2-Methylpropyl)phenyl]propanoic Acid
- MF:
- C13H18O3
- Structure:
- Chemical Name:
- (3RS)-1,3-Bis[4-(2-Methylpropyl) phenyl]butan-1-one
- MF:
- C24H32O
- Structure:
- Chemical Name:
- 2-[4-(2-Methylpropyl)phenyl] ethanol
- CAS:
- 2143535-25-3
- MF:
- C24H32O
- Structure:
- Chemical Name:
- 1-cyclopropyl-6-fluoro-8-hydroxy-4-oxo-7-((4aR,7aR)-tetrahydro-1H-pyrrolo[3,4-b]pyridin-6(2H,7H,7aH)-yl)-1,4-dihydroquinoline-3-carboxylic acid hydrobroMide
- CAS:
- 1292904-74-5
- MF:
- C20H23BrFN3O4
- Chemical Name:
- Ganciclovir EP Impurity
- Chemical Name:
- Crisaborole Impurity 15
- Chemical Name:
- Latamoxef impurity A
- Structure:
- Chemical Name:
- 5,8-Dihydroxy-1,4-bis-[2-(2-hydroxy-ethylamino)-ethylamino]-2,3-dihydro-anthraquinone
- CAS:
- 70476-74-3
- MF:
- C22H30N4O6
- Chemical Name:
- (E)-methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
- Structure:
- Chemical Name:
- 4-Acetyl-2-fluorobiphenyl
- CAS:
- 42771-79-9
- MF:
- C14H11FO
- Structure:
- Chemical Name:
- m-xylene-4,alpha,alpha'-triol
- CAS:
- 2937-60-2
- MF:
- C8H10O3
- Structure:
- Chemical Name:
- 3-Cyano-4-isobutoxybenzoic acid
- CAS:
- 528607-60-5
- MF:
- C12H13NO3
- Structure:
- Chemical Name:
- REF DUPL: trans-2-Hydroxymethyl-5-(cytosin-1-yl)-1,3-oxathiolane
- CAS:
- 139757-68-9
- MF:
- C8H11N3O3S
- Structure:
- Chemical Name:
- Iso Ganciclovir
- CAS:
- 86357-09-7
- MF:
- C9H13N5O4
- Structure:
- Chemical Name:
- (1S,3R)-1-Benzo[1,3]dioxol-5-yl-2-(2-chloro-acetyl)-2,3,4,9-tetrahydro-1H-b-carboline-3-carboxylic Acid Methyl Ester
- CAS:
- 629652-40-0
- MF:
- C22H19ClN2O5
- Structure:
- Chemical Name:
- 2-Butyl-1,6-dihydro-N,N,4-trimethyl-6-oxo-1-[[2'-[1-(triphenylmethyl)-1H-tetrazol-5-yl][1,1'-biphenyl]-4-yl]methyl]-5-pyrimidineacetamide
- CAS:
- 503155-67-7
- MF:
- C46H45N7O2
- Structure:
- Chemical Name:
- O-De(3-fluorobenzyl) Lapatinib
- CAS:
- 1268997-70-1
- MF:
- C22H21ClN4O4S
- Structure:
- Chemical Name:
- 5-Des[2-(tert-butylaMino)] BaMbuterol-5-ethylenediol
- CAS:
- 112935-92-9
- MF:
- C14H20N2O6
- Structure:
- Chemical Name:
- Desloratadine Epoxide
- CAS:
- 1346604-23-6
- MF:
- C19H19ClN2O
- Structure:
- Chemical Name:
- Menaquinone 4 2,3-Epoxide
- CAS:
- 72908-86-2
- MF:
- C31H40O3
- Structure:
- Chemical Name:
- D-Phenylalanyl Nateglinide
- CAS:
- 944746-48-9
- MF:
- C28H36N2O4
- Structure:
- Chemical Name:
- Felodipine 3,5-DiMethyl Ester
- CAS:
- 91189-59-2
- MF:
- C17H17Cl2NO4
- Structure:
- Chemical Name:
- Moxifloxacin Methyl Ester
- CAS:
- 721970-35-0
- MF:
- C22H26FN3O4
- Structure:
- Chemical Name:
- Atomoxetine Related Compound C (10 mg) (N-methyl-3-phenyl-3-(p-tolyloxy)propan-1-amine hydrochloride)
- CAS:
- 873310-31-7
- MF:
- C17H22ClNO
- Structure:
- Chemical Name:
- Dofetilide Related Compound A (25 mg) (N-[4-(2-(2-[4-(methanesulfonamido)phenoxy]ethyl)amino)phenyl]methanesulfonamide)
- CAS:
- 176447-94-2
- MF:
- C18H25N3O5S2
- Structure:
- Chemical Name:
- IMp. K (EP)
- CAS:
- 40610-41-1
- MF:
- C13H17NO3
- Structure:
- Chemical Name:
- (Z)-Methyl 3-((2'-(N'-hydroxycarbaMiMidoyl)biphenyl-4-yl)Methyl)-2-oxo-2,3-dihydro-1H-benzo[d]iMidazole-4-carboxylate
- CAS:
- 1499167-72-4
- MF:
- C23H20N4O4
- Structure:
- Chemical Name:
- 4-(4-fluorobenzoyl)-3-(hydroxyMethyl)benzonitrile
- CAS:
- 260371-16-2
- MF:
- C15H10FNO2
- Structure:
- Chemical Name:
- ATV-FX1 sodiuM salt
- CAS:
- 1315629-79-8
- MF:
- C33H34FN2NaO7
- Structure:
- Chemical Name:
- Montelukast Impurity H
- CAS:
- 851755-56-1
- MF:
- C34H32ClNO4S
- Structure:
- Chemical Name:
- SalMeterol EP IMpurity F
- CAS:
- 1391054-40-2
- MF:
- C25H37NO3
- Structure:
- Chemical Name:
- [6-Hydroxy-2-(4-hydroxyphenyl)benzo[b]thiophen-7-yl]
- CAS:
- 1391054-73-1
- MF:
- C28H27NO4S
- Structure:
- Chemical Name:
- (R)-α-Methyl-N-[3-[3-(trifluoroMethyl)phenyl]Methyl]-1-naphthaleneMethaneaMine Hydrochloride
- CAS:
- 1229225-42-6
- MF:
- C20H19ClF3N
- Structure:
- Chemical Name:
- 3(S)-Hydroperoxy Simvastatin
- CAS:
- 1092716-44-3
- MF:
- C25H38O7
- Structure:
- Chemical Name:
- 2(RS)-4-Methyl-1-(3-Methylpyridin-2-yl)-2-phenylpiperazine
- CAS:
- 191546-94-8
- MF:
- C17H21N3
- Structure:
- Chemical Name:
- 5-Methyl-2-(1H-1,2,3-triazol-1-yl)benzoic acid
- CAS:
- 1149352-55-5
- MF:
- C10H9N3O2
- Structure:
- Chemical Name:
- 9-ethyl-8-iodo-6,6-diMethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile
- CAS:
- 1256584-80-1
- MF:
- C21H17IN2O
- Structure:
- Chemical Name:
- Palonosetron Impurity 7
- CAS:
- 177932-92-2
- MF:
- C18H24N2O
- Structure:
- Chemical Name:
- 4-(2,3-Dichlorophenyl)-2,6-diMethyl-1,4-dihydropyridine-3,5-dicarboxylic acid
- CAS:
- 138279-32-0
- MF:
- C15H13Cl2NO4
- Chemical Name:
- IMp. A (EP) as Hydrochloride: 3-[[[2-[(DiaMinoMethylene)aMino]thiazol-4-yl]- Methyl]sulphanyl]propaniMidaMide Hydrochloride
- Structure:
- Chemical Name:
- 4-(4-fluoro-3-(piperazine-1-carbonyl)benzyl)phthalazin-1(2H)-one
- CAS:
- 763111-47-3
- MF:
- C20H19FN4O2
- Structure:
- Chemical Name:
- IRBESARTAN RELATED COMPOUND A (25 MG) (1-PENTANOYLAMINO-CYCLOPENTANECARBOXYLIC ACID [2'-(1H-TETRAZOL-5-YL)-BIPHENYL-4-YLMETHYL]-AMIDE)
- CAS:
- 748812-53-5
- MF:
- C25H30N6O2
- Structure:
- Chemical Name:
- FENOFIBRATE RELATED COMPOUND C (25 MG) (1-METHYLETHYL 2-[[2-[4-(4-CHLOROBENZOYL)PHENOXY]-2-METHYLPROPANOYL]OXY]-2-METHYLPROPANOATE)
- CAS:
- 217636-48-1
- MF:
- C24H27ClO6
- Structure:
- Chemical Name:
- 4-(DIPHENYLMETHYL)-1-PIPERAZINEETHANOL DIHYDROCHLORIDE
- CAS:
- 108983-83-1
- MF:
- C19H26Cl2N2O
- Structure:
- Chemical Name:
- 2-Piperazine-4-amino-6,7-dimethoxyquinazoline
- CAS:
- 60547-97-9
- MF:
- C14H19N5O2
- Structure:
- Chemical Name:
- N-ACETYL-4-BENZOQUINONE IMINE
- CAS:
- 50700-49-7
- MF:
- C8H7NO2
- Structure:
- Chemical Name:
- DIGOXIGENIN-TETRA-DIGITOXOSIDE
- CAS:
- 31539-05-6
- MF:
- C47H74O17
- Chemical Name:
- Afatinib impurity 82
- Chemical Name:
- Sugammadex sodium Impurity 51
- Chemical Name:
- Sugammadex sodium Impurity 42
- Structure:
- Chemical Name:
- Org49095
- CAS:
- 2412952-95-3
- MF:
- C71H111NaO48S8
- Chemical Name:
- Clopidogrel Impurity 55
- Chemical Name:
- Cabozantinib impurity 43
- Chemical Name:
- Cabozantinib impurity 75
- Chemical Name:
- Cabozantinib impurity 73
- Chemical Name:
- Canagliflozin Impurity 69
- Chemical Name:
- Dapoxetine impurity 65
- Chemical Name:
- Dapoxetine impurity 59
- Chemical Name:
- Oseltamivir Impurity 107
- Chemical Name:
- Oseltamivir Impurity 66
- Chemical Name:
- Tazobactam Impurity DBT
- Structure:
- Chemical Name:
- diginatin
- CAS:
- 52589-12-5
- MF:
- C41H64O15
- Structure:
- Chemical Name:
- Thiophene, 2-(2-fluorophenyl)-5-[(5-iodo-2-methylphenyl)methyl]-
- CAS:
- 2436275-33-9
- MF:
- C18H14FIS
- Chemical Name:
- 3-Chloro Avanafil
- Structure:
- Chemical Name:
- Revefenacin Impurity 2
- CAS:
- 1158699-78-5
- MF:
- C14H17NO4
- Structure:
- Chemical Name:
- (R)-2-(4-Methoxyphenyl)-1-methylethanamine
- CAS:
- 58993-79-6
- MF:
- C10H15NO
- Structure:
- Chemical Name:
- N-[5-[(1RS)-2-[benzyl[(1RS)-2-(4-methoxyphenyl)- 1-methylethyl]amino]-1-hydroxyethyl]-2- hydroxyphenyl]formamide
- CAS:
- 2514947-17-0
- MF:
- C26H30N2O4
- Chemical Name:
- NA
- Chemical Name:
- Cilastatin Impurity H
- Chemical Name:
- Azelastine Impurity K
- Chemical Name:
- Carbazochrome Sodium Sulfonate Impurity 1
- Chemical Name:
- Rosuvastatin Impurity 147
- Chemical Name:
- NA
- Chemical Name:
- Cetrorelix Impurity 10
- Chemical Name:
- Cetrorelix Impurity 3 (9-D-Pro)
- Chemical Name:
- Peramivir Intermediate Impurity 42
- Chemical Name:
- Nintedanib impurity A drops
- Chemical Name:
- Tofacitinib impurity N drops
- Chemical Name:
- Carboprost impurity 999
- Chemical Name:
- Bumetanide impurity C drops
- Chemical Name:
- Apixaban Impurity 79
- Chemical Name:
- Troxipide Impurity 6
- Chemical Name:
- Piperacillin Impurity K