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Pharmaceutical Impurity Reference Standards
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- 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: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
- Structure:
- Chemical Name:2-Hexenoic acid, 2-cyano-5-methyl-
- CAS:869-02-3
- MF:C8H11NO2
- Structure:
- Chemical Name:CP-690550A
- CAS:1243290-37-0
- MF:C15H21N5O2
- Structure:
- Chemical Name:(S)-Tomoxetine
- CAS:105314-53-2
- MF:C17H21NO
- Structure:
- Chemical Name:Fexofenadine EP Impurity F
- CAS:185066-33-5
- MF:C31H37NO4
- Structure:
- Chemical Name:(E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine
- CAS:468104-18-9
- MF:C13H17NO
- Structure:
- Chemical Name:4-(5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl)picolinamide
- CAS:1992028-94-0
- MF:C13H10N6O
- Structure:
- Chemical Name:Indacaterol Impurity 22
- CAS:773895-24-2
- MF:C31H34N2O3
- Structure:
- Chemical Name:10-O-2,2-Dichloroethoxycarbonyl Docetaxe
- CAS:158810-73-2
- MF:C46H55Cl2NO16
- Structure:
- Chemical Name:4R,5S)-2,4-diphenyl-4,5-dihydrooxazole-5-carboxylic acid
- CAS:849831-77-2
- MF:C16H13NO3
- Structure:
- Chemical Name:PDXA-226
- CAS:352637-51-5
- MF:C14H14N2O
- Structure:
- Chemical Name:Ropivacaine-ET-R
- CAS:98626-60-9
- MF:C16H24N2O
- Structure:
- Chemical Name:Ropivacaine-iPr-S
- CAS:265120-58-9
- MF:C17H26N2O
- Structure:
- Chemical Name:(S)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-3-yl)propan-1-amine
- CAS:1384080-33-4
- MF:C19H21NOS
- Structure:
- Chemical Name:methyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate
- CAS:
- MF:C17H15NO4S
- Chemical Name:Apremilast impurity 15
- CAS:
- MF:
- Structure:
- Chemical Name:Aprepitant Impurity 22
- CAS:934540-48-4
- MF:C20H16F7NO2
- Structure:
- Chemical Name:Aprepitant Impurity 9
- CAS:219821-37-1
- MF:C24H25F7N4O4
- Structure:
- Chemical Name:Betamethasone EP Impurity I
- CAS:185613-69-8
- MF:C22H29FO5
- Structure:
- Chemical Name:Canagliflozin Impurity 14
- CAS:842133-17-9
- MF:C24H25FO5S
- Chemical Name:Carfilzomib Impurity F
- CAS:
- MF:
- Structure:
- Chemical Name:Cefamandole Impurity A
- CAS:1947364-12-6
- MF:C17H16N2O6S
- Structure:
- Chemical Name:Dapagliflozin Impurity 19
- CAS:1469910-84-6
- MF:C29H33ClO10
- Chemical Name:Docetaxel EP Impurity A
- CAS:
- MF:
- Chemical Name:Empagliflozin Impurity 21
- CAS:
- MF:
- Chemical Name:Febuxostat Impurity 43
- CAS:
- MF:
- Chemical Name:Formoterol Impurity 20
- CAS:
- MF:
- Chemical Name:Hydroxychloroquine Impurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Ibrutinib Impurity 14
- CAS:2417548-76-4
- MF:C50H48N12O4
- Chemical Name:Imatinib impurity 11
- CAS:
- MF:
- Structure:
- Chemical Name:Isavuconazole Impurity 2
- CAS:2001051-99-4
- MF:C13H12F2N4O
- Chemical Name:Isavuconazole Impurity 25
- CAS:
- MF:
- Structure:
- Chemical Name:Loxoprofen Impurity 18
- CAS:99807-54-2
- MF:C11H13BrO2
- Structure:
- Chemical Name:Mupirocin EP Impurity D
- CAS:71087-97-3
- MF:C26H44O9
- Chemical Name:Olaparib Impurity 3
- CAS:
- MF:
- Structure:
- Chemical Name:Posaconazole Impurity 33
- CAS:182210-71-5
- MF:C12H13F2IO2
- Chemical Name:Posaconazole Impurity 38
- CAS:
- MF:
- Chemical Name:Posaconazole Impurity 62
- CAS:
- MF:
- Chemical Name:Roxithromycin Impurity J
- CAS:
- MF:
- Structure:
- Chemical Name:Sitagliptin Impurity 21
- CAS:2088771-60-0
- MF:C20H19F6N5O5
- Chemical Name:SofosBuvir Impurity 38
- CAS:
- MF:
- Chemical Name:SofosBuvir Impurity 61
- CAS:
- MF:
- Structure:
- Chemical Name:Suvorexant Impurity 2
- CAS:1276666-19-3
- MF:C23H23ClN6O2
- Chemical Name:Tenofovir impurity L
- CAS:
- MF:
- Structure:
- Chemical Name:Ticagrelor Impurity 27
- CAS:1402150-01-9
- MF:C19H26ClN5O5S
- Chemical Name:Ticagrelor impurity P
- CAS:
- MF:
- Structure:
- Chemical Name:Tramadol Impurity 1
- CAS:66170-32-9
- MF:C16H25NO2