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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Ebastine IMpurity F
- CAS:1429071-63-5
- MF:C32H39NO3
- Structure:
- Chemical Name:N-((S)-1-(((R)-1-Hydroxy-3-Methylbutyl)aMino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxaMide
- CAS:289472-78-2
- MF:C19H24N4O3
- Structure:
- Chemical Name:Azilsartan iMpurity O
- CAS:2171316-29-1
- MF:C23H19N3O4
- Chemical Name:cefoxitin iMpurity C
- CAS:
- MF:
- Structure:
- Chemical Name:3-((3R,4R)-3-((2-chloro-7H-pyrrolo[2,3-d]pyriMidin-4-yl)(Methyl)aMino)-4-Methylpiperidin-1-yl)-3-oxopropanenitrile
- CAS:1616761-00-2
- MF:C16H19ClN6O
- Structure:
- Chemical Name:Aprepitant iMpurity
- CAS:96730-04-0
- MF:C13H22NO4P
- Structure:
- Chemical Name:Doxofylline iMpurity
- CAS:254760-82-2
- MF:C11H16N4O4
- Chemical Name:forMoterol iMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:LevetiracetaM IMpurity 4
- CAS:1342229-32-6
- MF:C10H19NO4
- Structure:
- Chemical Name:cinacalcet iMpurity 4
- CAS:955373-56-5
- MF:C22H20F3N
- Chemical Name:Acyclovir IMpurity J
- CAS:
- MF:
- Chemical Name:AzithroMycin IMpurity K
- CAS:
- MF:
- Structure:
- Chemical Name:AztreonaM IMpurity F
- CAS:102579-57-7
- MF:C15H21N5O8S2
- Chemical Name:BendaMustine Dideschloroethyl IMpurity
- CAS:
- MF:
- Structure:
- Chemical Name:BroMocriptine IMpurity F
- CAS:82773-21-5
- MF:C32H40BrN5O5
- Structure:
- Chemical Name:Cephalexin IMpurity J
- CAS:
- MF:C16H17N3O4S
- Structure:
- Chemical Name:Cetirizine IMpurity (4-Chlorobenzophenone)
- CAS:2724877-99-8
- MF:C21H25ClN2O3
- Chemical Name:Dasatinib IMpurity 3
- CAS:
- MF:
- Chemical Name:Deferasirox IMpurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Desvenlafaxine (O-DesMethyl Venlafaxine) FuMarate
- CAS:93414-04-1
- MF:C20H29NO6
- Structure:
- Chemical Name:EzetiMibe Dehydoxy IMpurity
- CAS:204589-58-2
- MF:C24H21F2NO2
- Chemical Name:Flurbiprofen IMpurity E
- CAS:
- MF:
- Chemical Name:Levocarnitine IMpurity D
- CAS:
- MF:
- Structure:
- Chemical Name:Montelukast EP IMpurity E
- CAS:1187586-58-8
- MF:C41H46ClNO5S2
- Chemical Name:Prasugrel IMpurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:RebaMipide 2-Chloro IMpurity
- CAS:90098-06-9
- MF:C19H15ClN2O4
- Chemical Name:Ribavirin IMp. F (EP)
- CAS:
- MF:
- Chemical Name:RocuroniuM BroMide IMpurity 17
- CAS:
- MF:
- Structure:
- Chemical Name:SalMeterol IMpurity D
- CAS:
- MF:C25H37NO4
- Chemical Name:SulbactaM IMpurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Tigecycline Metabolite M6 (9-AniMoMinocycline)
- CAS:149934-19-0
- MF:C23H28N4O7
- Structure:
- Chemical Name:VerapaMil IMpurity G
- CAS:
- MF:C27H38N2O4
- Structure:
- Chemical Name:EthanediaMide iMpurity D
- CAS:480452-36-6
- MF:C21H30ClN5O5
- Structure:
- Chemical Name:N-(4-(2-Methyl-5,6-dihydro-4H-benzo[b]oxazolo[5,4-d]azepine-6-carbonyl)phenyl)-[1,1'-biphenyl]-2-carboxaMide
- CAS:168626-93-5
- MF:C32H25N3O3
- Structure:
- Chemical Name:1-(4-chlorophenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxaMide
- CAS:
- MF:C24H22ClN5O3
- Structure:
- Chemical Name:Methyl (4-Methylpiperidin-3-yl)carbaMate
- CAS:1204176-45-3
- MF:C8H16N2O2
- Structure:
- Chemical Name:(R)-3-(4-(5-broMo-2-chlorobenzyl)phenoxy)tetrahydrofuran
- CAS:915095-90-8
- MF:C17H16BrClO2
- Structure:
- Chemical Name:(2S,3R,4S,5S,6R)-2-(3-((5-(4-fluorophenyl)thiophen-2-yl)Methyl)-4-Methylphenyl)-tetrahydro-6-(hydroxyMethyl)-2-Methoxy-2H-pyran-3,4,5-triol
- CAS:1358581-37-9
- MF:C25H27FO6S
- Structure:
- Chemical Name:Levocarnitine iMpurity
- CAS:6490-20-6
- MF:C7H17ClN2O2
- Structure:
- Chemical Name:3-Hydroxy-4-Methyl-2(5H)-thiophenone
- CAS:34876-35-2
- MF:C5H6O2S
- Structure:
- Chemical Name:(1S,3R,7S,8S,8aR)-1,2,3,7,8,8a-Hexahydro-3,7-diMethyl-8-[2-[(2R,4R)-tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl]ethyl]-1-naphthalenyl Ester (2Z)-2-Methyl-2-butenoic Acid
- CAS:1048973-04-1
- MF:C24H34O5
- Structure:
- Chemical Name:(6α)-17,21-Dihydroxy-6-Methylpregna-1,4,9(11)-triene-3,20-dione
- CAS:93269-35-3
- MF:C22H28O4
- Structure:
- Chemical Name:[N(Z)]-N-(3,5-DiMethyl-2(3H)-thiazolylidene)-4-hydroxy-2-Methyl-2H-1,2-benzothiazine-3-carboxaMide 1,1-Dioxide
- CAS:1262333-25-4
- MF:C15H15N3O4S2
- Structure:
- Chemical Name:Quetiapine Impurity E
- CAS:1371638-05-9
- MF:C40H44N6O2S2
- Structure:
- Chemical Name:(41S,12S,13aS)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylic acid
- CAS:59413-21-7
- MF:C20H25N2NaO3
- Structure:
- Chemical Name:BDJS-SH 1
- CAS:36588-45-1
- MF:C12H18N2O2
- Chemical Name:Acyclovir Impurity O
- CAS:
- MF:
- Chemical Name:Alogliptin Impurity 19
- CAS:
- MF:
- Structure:
- Chemical Name:Aprepitant Impurity 17
- CAS:1333998-27-8
- MF:C20H19ClF7NO2
- Chemical Name:Blonanserin impurity A
- CAS:
- MF:
- Chemical Name:Captopril impurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Ciprofloxacin Impurity D HCl
- CAS:526204-10-4
- MF:C17H18FN3O3
- Chemical Name:Clindamycin Impurity 6
- CAS:
- MF:
- Chemical Name:Dabigatran Impurity 5
- CAS:
- MF:
- Chemical Name:DecitaBine Impurity 10
- CAS:
- MF:
- Structure:
- Chemical Name:Empagliflozin Impurity 17
- CAS:2452301-27-6
- MF:C23H28O7
- Chemical Name:Erlotinib Impurity 31
- CAS:
- MF:
- Chemical Name:Everolimus impurity C
- CAS:
- MF:
- Chemical Name:Ezetimibe Impurity 28
- CAS:
- MF:
- Chemical Name:FeBuxostat Impurity 30
- CAS:
- MF:
- Structure:
- Chemical Name:Fluconazole Impurity 5
- CAS:94952-36-0
- MF:C13H12F2N6O
- Chemical Name:Fosaprepitant Impurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:Imidafenacin Impurity 4
- CAS:503598-78-5
- MF:C16H18N2O
- Chemical Name:Intedanib Impurity H
- CAS:
- MF:
- Chemical Name:Isavuconazole Impurity 16
- CAS:
- MF:
- Chemical Name:Isavuconazole Impurity 4
- CAS:
- MF:
- Structure:
- Chemical Name:Lenvatinib Impurity 4
- CAS:
- MF:C28H22ClN5O5
- Chemical Name:Linagliptin Impurity 45
- CAS:
- MF:
- Chemical Name:MiraBegron Impurity F
- CAS:
- MF:
- Chemical Name:Moxifloxacin Impurity 19
- CAS:
- MF:
- Structure:
- Chemical Name:Moxifloxacin Impurity 34
- CAS:1824286-08-9
- MF:C9H7ClF2O3
- Structure:
- Chemical Name:Nifedipine Impurity J
- CAS:114709-68-1
- MF:C16H17N3O5
- Structure:
- Chemical Name:Oxiracetam Impurity I
- CAS:142274-07-5
- MF:C7H9NO4
- Chemical Name:PalBociclib Impurity 4
- CAS:
- MF:
- Chemical Name:Plerixafor Impurity 4
- CAS:
- MF:
- Chemical Name:Posaconazole Impurity 29
- CAS:
- MF:
- Chemical Name:Posaconazole Impurity 34
- CAS:
- MF:
- Chemical Name:Posaconazole Impurity 58
- CAS:
- MF:
- Structure:
- Chemical Name:Pregabalin Impurity 4
- CAS:1955498-14-2
- MF:C10H22ClNO2
- Chemical Name:Rabeprazole Impurity 17
- CAS:
- MF:
- Chemical Name:SofosBuvir Impurity 14
- CAS:
- MF:
- Chemical Name:sofosBuvir Impurity 34
- CAS:
- MF:
- Chemical Name:SofosBuvir Impurity 50
- CAS:
- MF:
- Chemical Name:SofosBuvir Impurity 56
- CAS:
- MF:
- Structure:
- Chemical Name:Tofacitinib impurity T
- CAS:1092578-43-2
- MF:C16H20N6O
- Structure:
- Chemical Name:Valsartan Impurity 39
- CAS:
- MF:C24H29N5O3
- Structure:
- Chemical Name:Donepezil Impurity
- CAS:844694-84-4
- MF:C24H31NO2
- Structure:
- Chemical Name:imp.E
- CAS:950781-89-2
- MF:C13H12F3N3O3
- Structure:
- Chemical Name:Lidocaine EP Impurity
- CAS:31785-64-5
- MF:C12H18N2O.ClH
- Structure:
- Chemical Name:Prucalopride Impurity 1
- CAS:1900715-96-9
- MF:C18H24ClN3O3
- Structure:
- Chemical Name:3-(5-CHLOROPYRID-2-YL)CARBAMOYLPYRAZINE-2-CARBOXYLIC ACID(WXG01564)
- CAS:43200-83-5
- MF:C11H7ClN4O3
- Chemical Name:Ampicillin Impurity Q
- CAS:
- MF:
- Chemical Name:Cefdinir Impurity PQ(CP)
- CAS:
- MF:
- Chemical Name:Cefdinir Impurity IJKL
- CAS:
- MF:
- Chemical Name:Ceftazidime Impurity A (EP)
- CAS:
- MF:
- Chemical Name:Oxacillin Sodium Impurity E(EP)
- CAS:
- MF:
- Chemical Name:Spectinomycin Impurity B
- CAS:
- MF:
- Structure:
- Chemical Name:Eriodictyol-8-glucoside
- CAS:153733-96-1
- MF:C21H22O11
- Structure:
- Chemical Name:Naringin 4'-glucoside
- CAS:17257-21-5
- MF:C33H42O19
- Structure:
- Chemical Name:8-(benzo[b]thiophen-4-yl)-5,8-diazaspiro[4.5]decan-5-ium chloride
- CAS:2143944-64-1
- MF:C16H21N2S+