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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:1,2-bis(2-methoxyphenoxy)ethane
- CAS:553-45-7
- MF:C16H18O4
- Structure:
- Chemical Name:Dispiro[11H-benzo[5,6]cyclohepta[1,2-b]pyridine-11,2'-oxirane-3',4''-piperidine]-1''-carboxylic acid, 8-chloro-5,6-dihydro-, ethyl ester, 1-oxide
- CAS:1432057-93-6
- MF:C22H23ClN2O4
- Chemical Name:Oseltamivir Impurity 109
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 81
- CAS:
- MF:
- Chemical Name:Oseltamivir Impurity 71
- CAS:
- MF:
- Structure:
- Chemical Name:trans N-Benzyl Paroxetine
- CAS:105813-14-7
- MF:C26H26FNO3
- Chemical Name:Lasmiditan Impurity 10
- CAS:
- MF:
- Chemical Name:Nilotinib N-Oxide Impurity 3
- CAS:
- MF:
- Chemical Name:Pemetrexed Impurity 51
- CAS:
- MF:
- Structure:
- Chemical Name:(S)-Tamsulosin Hydrochloride
- CAS:106463-19-8
- MF:C20H29ClN2O5S
- Structure:
- Chemical Name:2,2'-Bisnalmefene
- CAS:176220-84-1
- MF:C42H48N2O6
- Structure:
- Chemical Name:4-Desmethoxypropoxyl-4-chloro Rabeprazole
- CAS:168167-42-8
- MF:C14H12ClN3OS
- Structure:
- Chemical Name:N-Desmethyl-4-hydroxy Tamoxifen (approx. 1:1 E/Z Mixture)
- CAS:110025-28-0
- MF:C25H27NO2
- 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: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
- MF:
- Structure:
- Chemical Name:1,2-Benzenedicarboxylicacid,3-(hydroxyamino)-(9CI)
- CAS:202262-76-8
- MF:C8H7NO5
- 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
- CAS:
- MF:
- 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:17-BETA-ESTRADIOL 3-METHYL ETHER
- CAS:1474-53-9
- MF:C19H26O3
- Structure:
- Chemical Name:7-Epi-10-oxo-docetaxel (Docetaxel Impurity D)
- CAS:162784-72-7
- MF:C43H51NO14
- 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: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:(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:6-(2,5-dichlorophenyl)-1,3,5-Triazine-2,4(1H,3H)-dione
- CAS:30222-00-5
- MF:C9H5Cl2N3O2
- Structure:
- Chemical Name:(2'R)-2'-Deoxy-2'-fluoro-2'-Methyl-uridine 3',5'-dibenzoate
- CAS:863329-65-1
- MF:C24H21FN2O7
- Chemical Name:Anastrozole iMpurityC
- CAS:
- MF:
- Chemical Name:Celecoxib iMpurity-A
- CAS:
- MF:
- Chemical Name:EMtricitabine iMpurity A
- CAS:
- MF:
- Chemical Name:RocuroniuMbroMide iMpurity D
- CAS:
- MF:
- 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
- CAS:
- 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:Edaravone iMpurity P3
- CAS:1323485-71-7
- MF:C13H16N2O4S
- Chemical Name:Ondansetron Impurity B
- CAS:
- MF:
- Structure:
- Chemical Name:LeflunoMide EP IMpurity F
- CAS:1403564-06-6
- MF:C12H9F3N2O2
- Chemical Name:Itraconazole iMpurity D
- CAS:
- MF:
- 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
- Chemical Name:IMp. E (EP): 4-AMino-5-(ethylsulphonyl)-2-Methoxybenzoic Acid
- CAS:
- MF:
- 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