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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Ertapenem Dimer Form D Impurity
- CAS:1199797-41-5
- MF:C44H50N6O14S2
- Structure:
- Chemical Name:S 00218
- CAS:92700-82-8
- MF:C15H22N2O4
- Structure:
- Chemical Name:2-Methyl-2-(4-vinylphenyl)propanoic acid
- CAS:1256584-72-1
- MF:C12H14O2
- Structure:
- Chemical Name:2-Methyl-2-(4-vinylphenyl)propanoic acid
- CAS:1256584-72-1
- MF:C12H14O2
- Structure:
- Chemical Name:Loratadine IMpurity D
- CAS:
- MF:C22H23ClN2O2
- Structure:
- Chemical Name:PeMetrexed EP IMpurity A
- CAS:869791-42-4
- MF:C21H23N5O6
- Chemical Name:Itraconazole EP IMpurity G
- CAS:
- MF:
- Structure:
- Chemical Name:(1R,2S)-2-(3,4-difluorophenyl)cyclopropanaMine hydrochloride
- CAS:1402222-66-5
- MF:C9H10ClF2N
- Structure:
- Chemical Name:IMp. E (EP): 1,4-Bis(diphenylMethyl)piperazine
- CAS:216581-01-0
- MF:C30H30N2
- Structure:
- Chemical Name:21-Dehydro-6α-Methyl Prednisolone
- CAS:58636-50-3
- MF:C22H28O5
- Structure:
- Chemical Name:α-Hydroxy Flurbiprofen
- CAS:61466-95-3
- MF:C15H13FO3
- Structure:
- Chemical Name:5-(2-cyclopropyl-2-oxo-1-phenylethyl)-4,5,6,7-tetrahydrothieno [3,2-c]pyridin-2-yl acetate
- CAS:1391194-45-8
- MF:C20H21NO3S
- Structure:
- Chemical Name:9-AcridinaMine, 6-chloro-2-ethoxy-
- CAS:855939-48-9
- MF:C15H13ClN2O
- Structure:
- Chemical Name:1-(6-Methylpyridin-3-yl)-2-(4-(Methylthio)phenyl)ethanone
- CAS:221615-72-1
- MF:C15H15NOS
- Structure:
- Chemical Name:Edaravone
- CAS:68195-63-1
- MF:C30H26N6O3
- Structure:
- Chemical Name:Erlotinib IMpurity C
- CAS:1312937-41-9
- MF:C15H20N2O5
- Structure:
- Chemical Name:Cinacalcet IMpurity
- CAS:1229224-93-4
- MF:C22H26F3N
- Structure:
- Chemical Name:SalMeterol iMpurity
- CAS:144391-74-2
- MF:C25H37NO4
- Chemical Name:AzithroMycin iMpurity R
- CAS:
- MF:
- Chemical Name:ceftazidiMe iMpurity E
- CAS:
- MF:
- Structure:
- Chemical Name:CefuroxiMe Axetil iMpurity C
- CAS:76598-06-6
- MF:C18H15Cl3N4O9S
- Chemical Name:Rupatadine iMpurity D
- CAS:
- MF:
- Structure:
- Chemical Name:2-[1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl]pyriMidine-4,5,6-triaMine
- CAS:428854-24-4
- MF:C17H15FN8
- Structure:
- Chemical Name:AR-C 124910XX
- CAS:220347-05-7
- MF:C21H24F2N6O3S
- Structure:
- Chemical Name:Doxazosin iMpurity
- CAS:1219803-95-8
- MF:C23H26ClN5O5
- Chemical Name:Montelukast iMpurity
- CAS:2734125-88-1
- MF:
- Structure:
- Chemical Name:Vildagliptin iMpurity A-F
- CAS:1846606-32-3
- MF:C7H10N2O3
- Structure:
- Chemical Name:5a-17-(3-Pyridyl)-16-androstene-3-one
- CAS:
- MF:C24H31NO
- Chemical Name:AMpicillin EP IMpurity E
- CAS:
- MF:
- Chemical Name:AtracuriuM IMpurity H (Mixture of cis, trans(H1), cis, cis(H2) tans, trans IsoMer)
- CAS:1248429-33-5
- MF:
- Chemical Name:Ceftriaxone IMpurit B
- CAS:
- MF:
- Chemical Name:Flucloxacillin IMpurity F
- CAS:
- MF:
- Structure:
- Chemical Name:IMidafenacin IMpurity (1-(3-Cyano-3,3-Diphenylpropyl)-2-Methyl-1H-IMidazoliuM Phosphate)
- CAS:562091-56-9
- MF:C20H22N3O4P
- Structure:
- Chemical Name:Lercanidipine IMpurity B
- CAS:1119226-97-9
- MF:C35 H37 N3 O6
- Structure:
- Chemical Name:Milrinone IMpurity 2
- CAS:400063-10-7
- MF:C12H7N3O2
- Structure:
- Chemical Name:Moxifloxacin Decarboxy Analog
- CAS:1322062-57-6
- MF:C20H24FN3O2
- Structure:
- Chemical Name:Naratriptan IMpurity E
- CAS:1346746-73-3
- MF:C20H32N4O4S2
- Structure:
- Chemical Name:PraMipexole DiMer IMpurity II
- CAS:2206826-82-4
- MF:C20H32N6S2
- Structure:
- Chemical Name:Rosuvastatin Substituted Hydroxy Pentenoic Acid
- CAS:910867-11-7
- MF:C20H24FN3O5S
- Structure:
- Chemical Name:EthanediaMide iMpurity k
- CAS:2803419-58-9
- MF:C2H4N2O2
- Structure:
- Chemical Name:(1S,2S,3R,5S)-3-(7-hydroxy-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-5-(2-hydroxyethoxy)cyclopentane-1,2-diol
- CAS:1445580-43-7
- MF:C14H21N5O5S
- Structure:
- Chemical Name:D-threo-Pentitol, 2,5-anhydro-1,3,4-trideoxy-2-C-(2,4-difluorophenyl)-4-(hydroxyMethyl)-1-(1H-1,2,4-triazol-1-yl)-
- CAS:160709-02-4
- MF:C14H15F2N3O2
- Structure:
- Chemical Name:Bivalirudin iMpurity
- CAS:72378-50-8
- MF:C6H8N2O4
- Structure:
- Chemical Name:2-(4-tert-Butyl-3-hydroxy-2,6-dimethylphenyl)acetic acid
- CAS:55699-12-2
- MF:C14H20O3
- Structure:
- Chemical Name:(S)-Fesoterodine FuMarate
- CAS:1431511-18-0
- MF:C30H41NO7
- Structure:
- Chemical Name:(3S)-10-(4-Ethyl-1-piperazinyl)-9-fluoro-2,3-dihydro-3-Methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid (Levofloxacin IMpurity)
- CAS:106939-30-4
- MF:C19H22FN3O4
- Structure:
- Chemical Name:(6S,12bR)-6-(1,3-Benzodioxol-5-yl)-2,3,7,12b-tetrahydro-2-Methyl-pyrazino[1',2':1,5]pyrrolo[3,4-b]quinoline-1,4,12(6H)-trione
- CAS:531500-48-8
- MF:C22H17N3O5
- Structure:
- Chemical Name:1-(3,5-Dihydroxyphenyl)-2-[(1,1-diMethylethyl)(phenylMethyl)aMino]ethanone HydrobroMide
- CAS:94109-61-2
- MF:C19H23NO3
- Structure:
- Chemical Name:2-Methyl-5-(3-(4-(Methylsulfonyl)phenyl)furan-2-yl)pyridine
- CAS:307531-96-0
- MF:C17H15NO3S
- Structure:
- Chemical Name:3-(1,4-Dihydro-5-Methyl-4-oxo-7-propyliMidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxybenzenesulfonic Acid
- CAS:437717-43-6
- MF:C17H20N4O5S
- Structure:
- Chemical Name:3-[5-(1,5-Dioxo-5-(p-fluophenylpentyl]-4R-phenyl-2-oxazolidinone
- CAS:404874-93-7
- MF:C20H18FNO4
- Structure:
- Chemical Name:5-[Bis(2-chloroethyl)aMino]-1-Methyl-1H-benziMidazole-2-butanoic Acid Methyl Ester
- CAS:109882-25-9
- MF:C17H23Cl2N3O2
- Structure:
- Chemical Name:1-(2-amino-4,5-dimethoxyphenyl)ethan-1-one
- CAS:1071574-51-0
- MF:C10H13NO3
- Structure:
- Chemical Name:(+)-epipinoresinol-4-O-β-D-glucoside
- CAS:74983-66-7
- MF:C26H32O11
- Structure:
- Chemical Name:2-[3-Methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methylthio-1H-benzimidazole
- CAS:103577-40-8
- MF:C16H14F3N3OS
- Structure:
- Chemical Name:Ethyl (3E)-3-(2-phenylhydrazin-1-ylidene)butanoate
- CAS:6078-46-2
- MF:C12H16N2O2
- Structure:
- Chemical Name:1-(5,6-dihydronaphthalen-1-yl)ethan-1-amine hydrochloride
- CAS:1824506-44-6
- MF:C12H15N
- Structure:
- Chemical Name:(S)-4-(4-((3-amino-2-hydroxypropyl)amino)phenyl)morpholin-3-one hydrochloride
- CAS:1403383-55-0
- MF:C13H20ClN3O3
- Structure:
- Chemical Name:Terbutaline Impurity
- CAS:882066-15-1
- MF:C33H35NO3.H2O4S
- Structure:
- Chemical Name:Bis(4-fluorobenzyl)aMine
- CAS:646051-52-7
- MF:C14H13F2N
- Structure:
- Chemical Name:ethyl 1-cyclopropyl-6-fluoro-7-((4aS,7aS)-hexahydro-1H-pyrrolo[3,4-b]pyridin-6(2H)-yl)-8-hydroxy-4-oxo-1,4-dihydroquinoline-3-carboxylate
- CAS:
- MF:C22H26FN3O4
- Structure:
- Chemical Name:1-(((2R,4R)-4-((Benzyloxy)methyl)-2-(2,4-difluorophenyl)tetrahydrofuran-2-yl)methyl)-1H-1,2,4-triazole
- CAS:165115-83-3
- MF:C21H21F2N3O2
- Structure:
- Chemical Name:1-Cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-[(4aR,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-3-quinolinecarboxylic Acid
- CAS:855661-71-1
- MF:C21H24FN3O4
- Structure:
- Chemical Name:Iopamidol Impurity K
- CAS:1788899-70-6
- MF:C17H23I2N3O8
- Structure:
- Chemical Name:N-(2-(diethylamino)ethyl)-2-hydroxyquinoline-4-carboxamide
- CAS:87864-08-2
- MF:C16H21N3O2
- Structure:
- Chemical Name:5-(2-Fluorophenyl)-1-(3-pyridinylsulfonyl)-1H-pyrrole-3-carboxylic acid
- CAS:1883595-37-6
- MF:C16H11FN2O4S
- Structure:
- Chemical Name:Ritonavir EP Impurity B
- CAS:765875-58-9
- MF:C28H36N4O4S
- Structure:
- Chemical Name:2-[4-(2,3-DIHYDROXYPROPOXY)PHENYL]ACETAMIDE
- CAS:61698-76-8
- MF:C11H15NO4
- Structure:
- Chemical Name:3-OXO-3-(2,4,5-TRIFLUORO-3-METHOXY-PHENYL)-PROPIONIC ACID ETHYL ESTER
- CAS:112811-68-4
- MF:C12H11F3O4
- Structure:
- Chemical Name:2-(1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)-N5,N5- dimethylpyrimidine-4,5,6-triamine
- CAS:1169770-52-8
- MF:C19H19FN8
- Structure:
- Chemical Name:Caspofungin IMpurity A
- CAS:1202167-57-4
- MF:C51H86N10O15
- Structure:
- Chemical Name:DesdifluoroMethoxy Hydroxy Pantoprazole
- CAS:1261238-06-5
- MF:C15H15N3O4S
- Structure:
- Chemical Name:Levofloxacin Hydroxy Acid
- CAS:1036016-10-0
- MF:C18H21F2N3O4
- Structure:
- Chemical Name:N-(4,5-Dihydro-1H-iMidazol-2-yl)-6-quinoxalinaMine
- CAS:91147-43-2
- MF:C11H11N5
- Structure:
- Chemical Name:Nor Lidocaine Hydrochloride
- CAS:7729-94-4
- MF:C12H19ClN2O
- Structure:
- Chemical Name:rel-(1R,3S,5S)-8-Methyl-8-azabicyclo[3,2,1]oct-6-en-yl-2-hydroxy-2,2-dithiophen-2-yl acetate
- CAS:136310-66-2
- MF:C18H19NO3S2
- Structure:
- Chemical Name:(11β)-17-(Acetyloxy)-11-[4-(diMethylaMino)phenyl]-3-hydroxy-19-norpregna-1,3,5(10)-trien-20-one
- CAS:709615-25-8
- MF:C30H37NO4
- Structure:
- Chemical Name:4-[4-[4-(Diphenylmethylene)-1-piperidinyl]-1-hydroxybutyl]-α,α-dimethyl-benzeneacetic Acid
- CAS:1187954-57-9
- MF:C32H37NO3
- Structure:
- Chemical Name:(2S,3R,4R,5S)-1-(2-hydroxyethyl)-2-(hydroxymethyl)-3,4,5-Piperidinetriol Hydrochloride
- CAS:1370331-33-1
- MF:C8H17NO5
- Structure:
- Chemical Name:(3S,5R)-Rosuvastatin
- CAS:1242184-42-4
- MF:C22H28FN3O6S
- Structure:
- Chemical Name:(S)-5-(2-AMinopropyl)-2-MethoxybenzenesulfonaMide
- CAS:119714-13-5
- MF:C10H16N2O3S
- Structure:
- Chemical Name:Afatinib IMpurity I
- CAS:1637254-93-3
- MF:C22H19BrClFN4O3
- Structure:
- Chemical Name:Afatinib IMpurity I
- CAS:1637254-93-3
- MF:C22H19BrClFN4O3
- Structure:
- Chemical Name:Aripiprazole iMpurity 2
- CAS:1424857-93-1
- MF:C14H18Cl2N2
- Structure:
- Chemical Name:Aripiprazole iMpurity 2
- CAS:1424857-93-1
- MF:C14H18Cl2N2
- Chemical Name:Avanafil IMpurity 6
- CAS:
- MF:
- Chemical Name:Cefoxitin iMpurity F (S-Methoxy cefoxitin)
- CAS:
- MF:
- Structure:
- Chemical Name:Clopidogrel IMpurity 1
- CAS:
- MF:C15H14ClNO2S
- Chemical Name:LincoMycin iMpurity A
- CAS:
- MF:
- Chemical Name:Posaconazole iMpurity 1
- CAS:
- MF:
- Chemical Name:Riociguat IMpurtiy
- CAS:2920299-23-4
- MF:
- Chemical Name:TelMisartan IMpurity E
- CAS:
- MF:
- Structure:
- Chemical Name:IverMectin B1 Mono-sugar Derivative
- CAS:71837-27-9
- MF:C41H62O11
- Structure:
- Chemical Name:Desethyl Acetate (E)-CefuroxiMe Axetil
- CAS:97232-97-8
- MF:C16H16N4O8S
- Structure:
- Chemical Name:6-AMino-5-azacytidine
- CAS:105331-00-8
- MF:C8H13N5O5
- Structure:
- Chemical Name:N-Methyl-3-phenylpropan-1-aMine hydrochloride (RelCpd B)
- CAS:30684-07-2
- MF:C10H16ClN
- Structure:
- Chemical Name:1-[2-[(2,6-diMethylphenyl)thio]phenyl]- Piperazine
- CAS:508233-76-9
- MF:C18H22N2S