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Pharmaceutical Impurity Reference Standards
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- Chemical Name:
- Celecoxib iMpurity-A
- Chemical Name:
- EMtricitabine iMpurity A
- Chemical Name:
- RocuroniuMbroMide iMpurity D
- Structure:
- Chemical Name:
- (3S,4R)-4-(4-Fluorophenyl)piperidine-3-Methanol Hydrochloride
- CAS:
- 220548-73-2
- MF:
- C12H17ClFNO
- Structure:
- Chemical Name:
- LaMotrigine IMpurity D
- CAS:
- 661463-79-2
- MF:
- C9H5Cl2N3O2
- Structure:
- Chemical Name:
- (3β)-17-(3-Pyridinyl)androsta-5,16-dien-3-ol N-Oxide Sulfate
- MF:
- C24H31NO5S
- Structure:
- Chemical Name:
- DeMethylpiperazinyl Desethyl Sildenafil Sulfonyl Chloride
- CAS:
- 139756-27-7
- MF:
- C15H15ClN4O4S
- Structure:
- Chemical Name:
- Rizatriptan IMpurity B
- CAS:
- 1016900-28-9
- MF:
- C13H15ClN5
- Structure:
- Chemical Name:
- rac Adrenaline IMpurity D
- CAS:
- 1095714-91-2
- MF:
- C16H19NO3
- Structure:
- Chemical Name:
- 2-(1-Methylethenyl)-6-(1-Methylethyl)phenol
- CAS:
- 74926-89-9
- MF:
- C12H16O
- Structure:
- Chemical Name:
- Irinotecan IMpurity G
- CAS:
- 947687-02-7
- MF:
- C35H42N4O6
- Structure:
- Chemical Name:
- 5-[Bis(2-hydroxyethyl)aMino]-1-Methyl-1H-benziMidazole-2-butanoic Acid
- CAS:
- 109882-30-6
- MF:
- C16H23N3O4
- Structure:
- Chemical Name:
- 5-Chloro-6'-Methyl-3-[4-(Methylsulfonyl)phenyl]-2,3'-bipyridine 1'-Oxide
- CAS:
- 325855-74-1
- MF:
- C18H15ClN2O3S
- Structure:
- Chemical Name:
- Lafutidine IMpuritiy B
- CAS:
- 174583-84-7
- MF:
- C22H29N3O5S
- Structure:
- Chemical Name:
- N-(Methylsulfonyl)-N-(2-phenoxyphenyl)MethanesulfonaMide
- CAS:
- 905858-63-1
- MF:
- C14H15NO5S2
- Structure:
- Chemical Name:
- 4,5-Dihydro-α,3-diMethyl-5-oxo-1-phenyl-α-sulfo-1H-pyrazole-4-acetic Acid
- CAS:
- 1357477-99-6
- MF:
- C13H14N2O6S
- Structure:
- Chemical Name:
- tert-butyl 4-(2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)Methyl)benzoyl)piperazine-1-carboxylate
- CAS:
- 763114-04-1
- MF:
- C25H27FN4O4
- Structure:
- Chemical Name:
- 1H-IMidazole, 4-Methyl-1-[3-nitro-5-(trifluoroMethyl)phenyl]-
- CAS:
- 916975-92-3
- MF:
- C11H8F3N3O2
- Structure:
- Chemical Name:
- 2-[4-(4-Chlorobenzoyl)phenoxy]-2-methylpropionic acid methyl ester
- CAS:
- 42019-07-8
- MF:
- C18H17ClO4
- Structure:
- Chemical Name:
- 1,3-Dimethyl-5,5-diallylhexahydropyrimidine-2,4,6-trione
- CAS:
- 722-97-4
- MF:
- C12H16N2O3
- Structure:
- Chemical Name:
- Pseudomonic acid C
- CAS:
- 71980-98-8
- MF:
- C26H44O8
- Structure:
- Chemical Name:
- Cytarabine Impurity 12
- CAS:
- 14057-18-2
- MF:
- C15H18N2O9
- Structure:
- Chemical Name:
- D,L-O-DesMethyl Venlafaxine-d6
- CAS:
- 1062605-69-9
- MF:
- C16H19D6NO2
- Structure:
- Chemical Name:
- (E)-3-[p-Bromomethylphenyl]acrylic acid ethyl ester
- CAS:
- 78712-67-1
- MF:
- C12H13BrO2
- Structure:
- Chemical Name:
- 3-Amino-2-butenoic acid
- CAS:
- 21112-45-8
- MF:
- C4H7NO2
- Structure:
- Chemical Name:
- DU 6858
- CAS:
- 127199-06-8
- MF:
- C19H18ClF2N3O3
- Structure:
- Chemical Name:
- rac 4-[4-(Oxiranylmethoxy)-1,2,5-thiadiazol-3-yl]morpholine
- CAS:
- 58827-68-2
- MF:
- C9H13N3O3S
- Structure:
- Chemical Name:
- rac a-Hydroxy Ibuprofen
- CAS:
- 60057-62-7
- MF:
- C13H18O3
- Structure:
- Chemical Name:
- 3a,7a-dihydroxy-5-(1-methyl-1H-indole-3-carbonyl)-hexahydro-1H-benzo[d]imidazol-2(3H)-one
- CAS:
- 171967-74-1
- MF:
- C17H19N3O4
- Structure:
- Chemical Name:
- 5-(5-Chlorosulfonyl-2-ethoxyphenyl)-3-propyl-1,6-dihydro_x000b_-7H-pyrazolo[4,3-d]pyrimidin-7-one
- CAS:
- 139756-31-3
- MF:
- C16H17ClN4O4S
- Structure:
- Chemical Name:
- 5,7-difluorochroman-4-one
- CAS:
- 844648-22-2
- MF:
- C9H6F2O2
- Structure:
- Chemical Name:
- (N-tert-Butoxycarbonyl-N-[(1'R)-hydroxy-1-phenyl)ethyl])-4-nitrophenylethylaMine
- CAS:
- 223673-35-6
- MF:
- C21H26N2O5
- Structure:
- Chemical Name:
- Azelastine N-Oxide
- CAS:
- 640279-88-5
- MF:
- C22H24ClN3O2
- Structure:
- Chemical Name:
- Edaravone iMpurity P3
- CAS:
- 1323485-71-7
- MF:
- C13H16N2O4S
- Chemical Name:
- Ondansetron Impurity B
- Structure:
- Chemical Name:
- LeflunoMide EP IMpurity F
- CAS:
- 1403564-06-6
- MF:
- C12H9F3N2O2
- Chemical Name:
- 4'-((1,7'-dimethyl-2'-propyl-1H,1'H-2,5'-bibenzo[d]imidazol-1'-yl)methyl)biphenyl-2-carboxylic acid
- Chemical Name:
- Itraconazole iMpurity D
- Structure:
- Chemical Name:
- 3-amino-2-chloroacrolein
- CAS:
- 221615-73-2
- MF:
- C3H4ClNO
- Structure:
- Chemical Name:
- 3-Amino-4-pyrazolecarbonitrile
- CAS:
- 16617-46-2
- MF:
- C4H4N4
- Structure:
- Chemical Name:
- BenzaMide, 3,4-bis(cyclopropylMethoxy)-N-(3,5-dichloro-4-pyridinyl)-
- CAS:
- 1391052-24-6
- MF:
- C20H20Cl2N2O3
- Structure:
- Chemical Name:
- 4-ISOBUTYRYLACETOPHENONE
- CAS:
- 103931-20-0
- MF:
- C12H14O2
- Structure:
- Chemical Name:
- ButanaMide, 4-hydroxy-N-(1-Methylethyl)-
- CAS:
- 42042-66-0
- MF:
- C7H15NO2
- Structure:
- Chemical Name:
- 5H-chroMeno[2,3-b]pyridin-7-ylacetic acid
- CAS:
- 52549-07-2
- MF:
- C14H11NO3
- Structure:
- Chemical Name:
- IMp. C (EP): (4-(DiphenylMethyl)-1,1-bis[(E)-3-phenylprop-2-enyl]piperaziniuM Chloride
- CAS:
- 95062-18-3
- MF:
- C35H35ClF2N2
- Structure:
- Chemical Name:
- 3,5-DiMethyl-1-nitroadaMantane
- CAS:
- 6588-68-7
- MF:
- C12H19NO2
- Structure:
- Chemical Name:
- 2-Deschloro Aripiprazole
- CAS:
- 203395-82-8
- MF:
- C23H28ClN3O2
- Structure:
- Chemical Name:
- 6-O-Benzyl-4-dehydroxy-4-diMethylphenylsilyl Entecavir
- CAS:
- 649761-24-0
- MF:
- C27H31N5O2Si
- Structure:
- Chemical Name:
- Desisobutyl-n-butyl BortezoMib
- CAS:
- 1104011-35-9
- MF:
- C19H25BN4O4
- Structure:
- Chemical Name:
- 2-aMino-4-Methoxy-5-(3-Morpholinopropoxy)benzaMide
- CAS:
- 246512-44-7
- MF:
- C15H23N3O4
- Structure:
- Chemical Name:
- N-(4,6-dichloro-2-(propylthio)pyriMidin-5-yl)forMaMide
- CAS:
- 1402150-28-0
- MF:
- C8H9Cl2N3OS
- Structure:
- Chemical Name:
- Ebastine IMpurity G
- CAS:
- 1429071-65-7
- MF:
- C32H39NO3
- Chemical Name:
- monocalcium mono((3R,5S,E)-7-(4-(2-fluorophenyl)-6-isopropyl-2- (N-methylmethylsulfonamido)pyrimidin-5-yl)-3,5-dihydroxyhept-6- enoate)
- Structure:
- Chemical Name:
- Benzenepropanoic acid, 4-(2-oxiranylmethoxy)-
- CAS:
- 2167848-51-1
- MF:
- C12H14O4
- Structure:
- Chemical Name:
- Rebeprazole sulfone N-oxide
- CAS:
- 924663-37-6
- MF:
- C18H21N3O5S
- Structure:
- Chemical Name:
- 3,3',5,5'-TETRAIODOTHYRO-ACETIC ACID
- CAS:
- 67-30-1
- MF:
- C14H8I4O4
- Structure:
- Chemical Name:
- 4-Methoxyglucobrassicin
- CAS:
- 83327-21-3
- MF:
- C17H22N2O10S2
- Structure:
- Chemical Name:
- 4-methylsulfinylbenzoate
- CAS:
- 33963-58-5
- MF:
- C8H8O3S
- Chemical Name:
- Capecitabine Related Compound C
- Structure:
- Chemical Name:
- 2-Cyclopentene-1-methanol, 4-[2-amino-6-(cyclopropylamino)-9H-purin-9-yl]-, (1R-cis)-
- CAS:
- 136470-79-6
- MF:
- C14H18N6O
- Structure:
- Chemical Name:
- Glycopyrrolate Erythro Isomer
- CAS:
- 201667-20-1
- Structure:
- Chemical Name:
- 1,2-Benzenedicarboxylicacid,3-(hydroxyamino)-(9CI)
- CAS:
- 202262-76-8
- MF:
- C8H7NO5
- Structure:
- Chemical Name:
- 5-chloro-N-(4,5-dihydro-1H-imidazol-2-yl)quinoxalin-6-amine
- CAS:
- 91147-46-5
- MF:
- C11H10ClN5
- Structure:
- Chemical Name:
- (S)-(+)-3-HYDROXYTETRAHYDROFURAN
- CAS:
- 79107-75-8
- MF:
- C4H8OS
- Structure:
- Chemical Name:
- TRIBENZYLPHOSPHITE
- CAS:
- 15205-57-9
- MF:
- C21H21O3P
- Structure:
- Chemical Name:
- 4-Chlor-3-nitro-5-sulfobenzoesure
- CAS:
- 130262-91-8
- MF:
- C7H4ClNO7S
- Structure:
- Chemical Name:
- 4-(4-Methylpiperazin-1-ylmethyl)benzoic acid
- CAS:
- 106261-48-7
- MF:
- C13H18N2O2
- Structure:
- Chemical Name:
- Diphenylpiperidin-4-ylmethanol hydrochloride
- CAS:
- 1798-50-1
- MF:
- C18H22ClNO
- Structure:
- Chemical Name:
- 1-(diaminomethylidene)-3-[(2R,3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]urea
- CAS:
- 2508-80-7
- MF:
- C7H14N4O5
- Structure:
- Chemical Name:
- 3-(2-amino-1-hydroxyethyl)benzene-1,2-diol
- CAS:
- 73660-93-2
- MF:
- C8H11NO3
- Structure:
- Chemical Name:
- 3-(4-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)benzonitrile
- CAS:
- 641571-12-2
- MF:
- C12H8F3N3
- Structure:
- Chemical Name:
- (3-CHLORO-3-PHENYL-PROPYL)-DIMETHYL-AMINE HYDROCHLORIDE
- CAS:
- 79130-51-1
- MF:
- C11H16ClN
- Structure:
- Chemical Name:
- (Dimethylamino)acetaldehyde Dimethyl Acetal
- CAS:
- 38711-20-5
- MF:
- C6H15NO2
- Structure:
- Chemical Name:
- Dasatinib N-Oxide
- CAS:
- 910297-52-8
- MF:
- C22H26ClN7O3S
- Structure:
- Chemical Name:
- (R)-9-[2-(DIETHYLPHOSPHONOMETHOXY)PROPYL] ADENINE
- CAS:
- 180587-75-1
- MF:
- C13H22N5O4P
- Structure:
- Chemical Name:
- P-TOLYL-PROPYNOIC ACID ETHYL ESTER
- CAS:
- 52188-06-4
- MF:
- C12H12O2
- Structure:
- Chemical Name:
- cis-N-Methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-naphthalenamine hydrochloride
- CAS:
- 79617-89-3
- MF:
- C17H17Cl2N.HCl
- Structure:
- Chemical Name:
- 2,4-DIMETHYLDIPHENYLSULFIDE
- CAS:
- 16704-47-5
- MF:
- C14H14S
- Structure:
- Chemical Name:
- Dibenz[b,e]oxepin-11(6H)-one
- CAS:
- 4504-87-4
- MF:
- C14H10O2
- Structure:
- Chemical Name:
- 2-CHLORO-1-(4,5-DICHLORO-2-THIENYL)ETHAN-1-ONE
- CAS:
- 64218-50-4
- MF:
- C6H3Cl3OS
- Structure:
- Chemical Name:
- (5Z,7E)-9,10-Seco-26,27-cyclo-1α,3β-dihydroxycholesta-5,7,10(19)-trien-24-one
- CAS:
- 126860-84-2
- MF:
- C27H40O3
- Structure:
- Chemical Name:
- (-)-3-Demethylcolchicine
- CAS:
- 7336-33-6
- MF:
- C21H23NO6
- Structure:
- Chemical Name:
- (3R,5R,6E)-7-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-6-heptenoic acid
- CAS:
- 769908-13-6
- MF:
- C25H24FNO4
- Structure:
- Chemical Name:
- (7a,17b)-7-7-[9-[(4,4,5,5,5-Pentafluoropentyl)sulfinyl]nonyl]-estra-1,3,5(10)-triene-3,17-diol 17-acetate
- CAS:
- 261506-24-5
- MF:
- C34H49F5O4S
- Structure:
- Chemical Name:
- 1-(1H-benzo[d]imidazol-2-yl)-3-methyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid
- CAS:
- 1163685-30-0
- MF:
- C14H11N3O3
- Structure:
- Chemical Name:
- O-Desethyl Candesartan Cilexetil
- CAS:
- 869631-11-8
- MF:
- C31H30N6O6
- Structure:
- Chemical Name:
- α-Desmethyl Anastrozole
- CAS:
- 1215780-15-6
- MF:
- C16H17N5
- Structure:
- Chemical Name:
- Epi Lovastatin
- CAS:
- 79952-44-6
- MF:
- C24H36O5
- Structure:
- Chemical Name:
- Hydroxy Brimonidine
- CAS:
- 1216379-05-3
- MF:
- C11H12BrN5O
- Structure:
- Chemical Name:
- 7-Methoxy-3,4-dihydro-1H-quinolin-2-one
- CAS:
- 22246-17-9
- MF:
- C10H11NO2
- Structure:
- Chemical Name:
- 4-Methoxy-alpha-methyl-N-(phenylmethyl)benzeneethanamine hydrochloride
- CAS:
- 1049695-95-5
- MF:
- C17H21NO.HCl
- Structure:
- Chemical Name:
- Desloratadine Hydroxypiperidine N-Oxide
- CAS:
- 1193725-75-5
- MF:
- C19H15ClN2O2
- Structure:
- Chemical Name:
- 16α,17,21-Trihydroxy-pregna-1,4-diene-3,11,20-trione
- CAS:
- 3754-05-0
- MF:
- C21H26O6
- Structure:
- Chemical Name:
- 4H-Furo[2,3-c]pyranyl Mupirocin SodiuM IMpurity
- CAS:
- 116182-43-5
- MF:
- C26H43NaO9
- Structure:
- Chemical Name:
- 4-Methyl Erlotinib Hydrochloride
- CAS:
- 1346601-52-2
- MF:
- C23H25N3O4
- Structure:
- Chemical Name:
- 5-[[(4-Fluorophenyl)Methyl]aMino]-1,3-dihydro-2H-iMidazo[4,5-b]pyridin-2-one
- CAS:
- 951624-49-0
- MF:
- C13H11FN4O
- Structure:
- Chemical Name:
- Perindoprilat LactaM B
- CAS:
- 130061-28-8
- MF:
- C17H26N2O4
- Structure:
- Chemical Name:
- PseudoMonic Acid D SodiuM
- CAS:
- 85178-60-5
- MF:
- C26H41NaO9