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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:5-Pyrimidinamine, 4,6-dichloro-N-hydroxy-2-(propylthio)-
- CAS:2517939-84-1
- MF:C7H9Cl2N3OS
- Structure:
- Chemical Name:(R)-4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)benzenediazonium tetrafluoroborate
- CAS:1630761-21-5
- MF:C11H11N4O+
- Chemical Name:N-acetyl-β-D-glucosidase
- CAS:
- MF:
- Chemical Name:CetearylGlucosideCetearyl Glucoside
- CAS:246159-33-1
- MF:
- Chemical Name:Bisoprolol Impurity 40
- CAS:
- MF:
- Structure:
- Chemical Name:2H-Naphtho[1,2-b]pyran-6-ol, 2,5-dimethyl-2-[(3E,7E)-4,8,12-trimethyl-3,7,11-tridecatrienyl]- (9CI)
- CAS:65941-19-7
- MF:C31H40O2
- Structure:
- Chemical Name:Amifostine Impurity 15
- CAS:10297-31-1
- MF:C7H17Br3N2
- Chemical Name:Doxylamine Impurity G
- CAS:
- MF:
- Structure:
- Chemical Name:2,4-Pyrimidinediol, 6-chloro- (9CI)
- CAS:107577-09-3
- MF:C4H3ClN2O2
- Structure:
- Chemical Name:2,4-Pyrimidinediol, 6-chloro- (9CI)
- CAS:107577-09-3
- MF:C4H3ClN2O2
- Chemical Name:Phenoxymethylpenicillin Potassium Impurity 8
- CAS:
- MF:
- Chemical Name:Tegoprazan Impurity 4
- CAS:
- MF:
- Structure:
- Chemical Name:rac Benzyl Phenylephrine
- CAS:1159977-09-9
- MF:C16H19NO2
- Structure:
- Chemical Name: Atorvastatin Acetonide
- CAS:581772-29-4
- MF:C36H39FN2O5
- Structure:
- Chemical Name:4H-Imidazo[1,5-a][1,4]benzodiazepine-3-carboxylicacid, 5,6-dihydro-8-hydroxy-5-methyl-6-oxo-, ethyl ester
- CAS:131666-45-0
- MF:C15H15N3O4
- Structure:
- Chemical Name:α,α-Bis[2-(dimethylamino)ethyl]-
- CAS:1246816-57-8
- MF:C16H24ClN3
- Structure:
- Chemical Name:(3R,5R)-6-Cyano-3,5-dihydroxy-hexanoic Acid tert-Butyl Ester
- CAS:125971-93-9
- MF:C11H19NO4
- Structure:
- Chemical Name:2-Desethoxy-2-hydroxy-2H-2-ethyl Candesartan Cilexetil
- CAS:1185256-03-4
- MF:C33H34N6O6
- Structure:
- Chemical Name:N-Desethyl-N-propyl Oxybutynin
- CAS:1215677-72-7
- MF:C23H33NO3
- Structure:
- Chemical Name:(9E)-Erythromycin 9-[O-[[(2-Methoxyethoxy)methoxy]methyl]oxime]
- CAS:425365-64-6
- MF:C42H78N2O16
- Structure:
- Chemical Name:3-Oxo Atorvastatin
- CAS:887196-30-7
- MF:C33H33FN2O5
- Structure:
- Chemical Name:Octyl Orlistat
- CAS:1243011-56-4
- MF:C31H57NO5
- Structure:
- Chemical Name:1,2,3,4-Tetrahydro-4,8-dihydroxy-2-methyl-isoquinoline
- CAS:23824-25-1
- MF:C10H13NO2
- Structure:
- Chemical Name:(E)-Cefetamet Pivoxil
- CAS:1705612-82-3
- MF:C20H25N5O7S2
- Structure:
- Chemical Name:{3-[2-(DiMethylaMino)ethyl]-5-[(pyrrolidine-1-yl)sulfonylMethyl]-1H-indol-1-yl}Methanol
- CAS:1018676-02-2
- MF:C18H27N3O3S
- Structure:
- Chemical Name:{3-[2-(DiMethylaMino)ethyl]-5-[(pyrrolidine-1-yl)sulfonylMethyl]-1H-indol-1-yl}Methanol
- CAS:1018676-02-2
- MF:C18H27N3O3S
- Structure:
- Chemical Name:8-Dechloro-9-chloro Desloratadine
- CAS:117811-13-9
- MF:C19H19ClN2
- Structure:
- Chemical Name:Acyclovir L-Isoleucinate
- CAS:142963-63-1
- MF:C14H22N6O4
- Structure:
- Chemical Name:Carvedilol Bisalkylpyrocatechol IMpurity
- CAS:1346602-98-9
- MF:C40H42N4O6
- Structure:
- Chemical Name:Decarboxyl Ofloxacin
- CAS:123155-82-8
- MF:C17H20FN3O2
- Structure:
- Chemical Name:o-AdaMantylanisole
- CAS:43109-77-9
- MF:C17H22O
- Structure:
- Chemical Name:Methyl 2-CarbaMoylbenzoate
- CAS:90564-02-6
- MF:C9H9NO3
- Structure:
- Chemical Name:3-vinylphenyl ethyl(Methyl)-carbaMate
- CAS:1346602-84-3
- MF:C12H15NO2
- Structure:
- Chemical Name:AMisulpride IMpurity D
- CAS:71676-00-1
- MF:C16H25N3O4S
- Chemical Name:AFuroseMide IMp. A (EP)
- CAS:
- MF:
- Structure:
- Chemical Name:(1R)-3,4-Dihydro-1-phenyl-2(1H)-isoquinolinecarboxylic acid ethyl ester
- CAS:180468-41-1
- MF:C18H19NO2
- Structure:
- Chemical Name:2-[4-[(RS)-(4-Chlorophenyl)phenylMethyl]-piperazin-1-yl]ethanolDihydrochloride
- CAS:
- MF:C19H25Cl3N2O
- Structure:
- Chemical Name:CAPECITABINE related substance USP
- CAS:1262133-68-5
- MF:C20H30FN3O9
- Structure:
- Chemical Name:4-AMino-N-[(1-ethyl-2-pyrrolidinyl)Methyl]-5-(ethylsulfonyl)- 2-MethoxybenzaMide N-Oxide
- CAS:71676-01-2
- MF:C17H27N3O5S
- Structure:
- Chemical Name:3-[(4-AMino-2-Methyl-5-pyriMidinyl)Methyl]-4-Methyl-5-[2-(sulfooxy)ethyl]thiazoliuM Inner Salt
- CAS:2380-61-2
- MF:C12H16N4O4S2
- Structure:
- Chemical Name:1,4-Bis-[4-[4-Methyl-3-[[4-(pyridin-3-yl)pyriMidin-2-yl]aMino]phenyl]carbaMoyl]benzylpiperazine
- CAS:1365802-18-1
- MF:C52H48N12O2
- Structure:
- Chemical Name:[6R-[6α,7β(R*)]]-7-[(AMinophenylacetyl)aMino]-3-Methyl-8-oxo-5-thia-1-azabicyclo[4.2.0
- CAS:79750-46-2
- MF:C16H17N3O4S
- Structure:
- Chemical Name:SalMeterol EP IMpurity D
- CAS:1391052-04-2
- MF:C34H47NO7
- Structure:
- Chemical Name:3-Pyridinecarboxylic Acid 2-AMinoethyl Ester Dihydrochloride
- CAS:87330-70-9
- MF:C8H11ClN2O2
- Structure:
- Chemical Name:3-cyclopropyl-1-(2-fluoro-4-iodophenyl)-5-hydroxy-6,8-diMethylpyrido[2,3-d]pyriMidine-2,4,7(1H,3H,8H)-trione
- CAS:871700-24-2
- MF:C18H15FIN3O4
- Structure:
- Chemical Name:PeMetrexed EP IMpurity D
- CAS:144051-68-3
- MF:C25H28N6O9
- Structure:
- Chemical Name:SuMatriptan EP IMpurity F
- CAS:2074615-63-5
- MF:C13H17N3O2S
- Structure:
- Chemical Name:2-[[(5-hydroxy-1H-benziMidazol-2-yl)sulfinyl]Methyl]-3,5-diMethyl-1-4(1H)-pyridone
- CAS:
- MF:C15H15N3O3S
- Structure:
- Chemical Name:Perindopril Impurity
- CAS:145513-56-0
- MF:C19H32N2O5
- Structure:
- Chemical Name:4-Acetoxyisophthalic Acid
- CAS:5985-26-2
- MF:C10H8O6
- Structure:
- Chemical Name:Ganciclovir Dipropionate
- CAS:86357-20-2
- MF:C15H21N5O6
- Structure:
- Chemical Name:IMp. A (EP): (RS)-2-Chloro-N-(2-Methylphenyl)-PropanaMide
- CAS:39084-88-3
- MF:C10H11Cl2NO
- Structure:
- Chemical Name:1β-Hydroxy-6α-Methyl-1,4-androstadiene-3,17-dione
- CAS:61919-52-6
- MF:C20H26O3
- Structure:
- Chemical Name:5-Fluoro ent-LaMivudine Acid D-Menthol Ester
- CAS:764659-79-2
- MF:C18H26FN3O4S
- Structure:
- Chemical Name:Tricyclo[3.3.1.13,7]decan-1-aMine, 3,5,7-triMethyl-, hydrochloride
- CAS:15210-60-3
- MF:C13H24ClN
- Structure:
- Chemical Name:3-((butyryloxy)Methyl) 5-Methyl 4-(2',3'-dichlorophenyl)-2,6-diMethylpyridine-3,5-dicarboxylate
- CAS:188649-48-1
- MF:C21H21Cl2NO6
- Structure:
- Chemical Name:Bis Valacyclovir (~90%)
- CAS:1356019-51-6
- MF:C27H40N12O8
- Structure:
- Chemical Name:Flupirtine DiMer
- CAS:1417916-52-9
- MF:C30H32F2N8O4
- Structure:
- Chemical Name:(S)-2-((R)-1-(3,5-bis(trifluoroMethyl)phenyl)ethoxy)-4-benzylMorpholin-3-one
- CAS:327623-36-9
- MF:C21H19F6NO3
- Structure:
- Chemical Name:3-(5-Methyl-3-phenylisoxazol-4-yl)benzenesulfonaMide
- CAS:2304623-36-5
- MF:C16H14N2O3S
- Structure:
- Chemical Name:(S)-2-(3,4-Difluorophenyl)oxirane
- CAS:1006376-63-1
- MF:C8H6F2O
- Structure:
- Chemical Name:EsoMeprazole iMpurity
- CAS:1424857-86-2
- MF:C11H15NO3
- Structure:
- Chemical Name:AMoxicillin iMpurity L
- CAS:
- MF:C16H19N3O5S
- Structure:
- Chemical Name:AMoxicillin iMpurity L
- CAS:
- MF:C16H19N3O5S
- Chemical Name:Azilsartan iMpurity G
- CAS:
- MF:
- Structure:
- Chemical Name:(R)-N-(1-(naphthalen-1-yl)ethyl)-3-(M-tolyl)propan-1-aMine
- CAS:253337-60-9
- MF:C22H25N
- Structure:
- Chemical Name:3-((3R,4R)-4-Methyl-3-(Methyl(7H-pyrrolo[2,3-d]pyriMidin-4-yl)aMino)piperidin-1-yl)-3-oxopropanaMide
- CAS:1675248-19-7
- MF:C16H22N6O2
- Structure:
- Chemical Name:Blonanserin iMpurity
- CAS:132810-83-4
- MF:C23H30FN3
- Structure:
- Chemical Name:Deferasirox iMpurity
- CAS:1688656-83-8
- MF:C42H28N6O8S
- Structure:
- Chemical Name:Lercanidipine iMpurity
- CAS:320750-19-4
- MF:C37H43N3O6
- Structure:
- Chemical Name:AMpicillin EP IMpurity J
- CAS:6489-58-3
- MF:C13H20N2O4S
- Structure:
- Chemical Name:Anastrozole IMpurity (alfa1 , alfa1, alfa3, alfa3-TetraMethyl-5-(1H-1,2,4-triazol-1-ylMethyl)-1,3-BenzenediacetaMide)
- CAS:120512-04-1
- MF:C17H23N5O2
- Structure:
- Chemical Name:Anastrozole IMpurity (alfa1 , alfa1, alfa3, alfa3-TetraMethyl-5-(1H-1,2,4-triazol-1-ylMethyl)-1,3-BenzenediacetaMide)
- CAS:120512-04-1
- MF:C17H23N5O2
- Structure:
- Chemical Name:CefathiaMidine Lactone
- CAS:905712-22-3
- MF:C17H24N4O4S2
- Structure:
- Chemical Name:Cinacalcet IMpurity 9
- CAS:802918-36-1
- MF:C22H24F3N
- Structure:
- Chemical Name:Doxorubicin IMpurity B
- CAS:106401-68-7
- MF:C29H34BrNO11
- Chemical Name:EzetiMibe IMpurity B
- CAS:
- MF:
- Structure:
- Chemical Name:Fluconazole IMpurity [1, 3-Bis(1H-1, 2, 4-Triazole-1-yl)propan-2-one]
- CAS:1449785-88-9
- MF:C10H7F2N3O
- Structure:
- Chemical Name:HydroxyMethylidene thione
- CAS:1320360-86-8
- MF:C15H18N4OS
- Chemical Name:Lansoprazole IMpurity I
- CAS:
- MF:
- Structure:
- Chemical Name:Lapatinib IMpurity 10
- CAS:1152131-73-1
- MF:C26H17ClFN3O4
- Chemical Name:Metronidazole IMpurity D
- CAS:
- MF:
- Structure:
- Chemical Name:3-(5-Methyl-3-phenylisoxazol-4-yl)benzenesulfonaMide
- CAS:
- MF:C16H14N2O3S
- Structure:
- Chemical Name:Tigecycline
- CAS:1337920-34-9
- MF:C23H28N4O7.BrH
- Structure:
- Chemical Name:1-((2R,3R,4R,5R)-3-chloro-4-hydroxy-5-(hydroxyMethyl)-3-Methyltetrahydrofuran-2-yl)pyriMidine-2,4(1H,3H)-dione
- CAS:1496551-72-4
- MF:C10H13ClN2O5
- Structure:
- Chemical Name:1-NaphthaleneMethanaMine, 7,8-dihydro-α-Methyl-N-[3-[3-(trifluoroMethyl)phenyl]propyl]-, hydrochloride (1:1), (αR)-
- CAS:1020414-33-8
- MF:C22H25ClF3N
- Structure:
- Chemical Name:4,6-dichloro-2-(propylsulfinyl)pyriMidin-5-aMine
- CAS:1823431-32-8
- MF:C7H9Cl2N3OS
- Structure:
- Chemical Name:Acetic acid, [[(3aR,4S,6R,6aS)-tetrahydro-2,2-diMethyl-6-[[(phenylMethoxy)carbonyl]aMino]-4H-cyclopenta-1,3-dioxol-4-yl]oxy]-, ethyl ester
- CAS:866551-95-3
- MF:C20H27NO7
- Structure:
- Chemical Name:4',6'-Dinitro-2'-phenoxymethanesulfonanilide
- CAS:51765-56-1
- MF:C13H11N3O7S
- Structure:
- Chemical Name:5-[1-Hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]salicylic acid methyl ester hydrochloride
- CAS:33778-93-7
- MF:C20H26ClNO4
- Chemical Name:Blonanserin Impurity I
- CAS:
- MF:
- Structure:
- Chemical Name:25,26,26,26,27,27-hexadeuterocholest-5-ene-3,27-diol
- CAS:1246302-95-3
- MF:C27H40D6O2
- Structure:
- Chemical Name:2-Azabicyclo[3.1.0]hexane-3-carbonitrile, 2-[(2R)-2-aMino-2-(3-hydroxytricyclo[3.3.1.13,7]dec-1-yl)acetyl]-, (1R,3R,5R)-
- CAS:1564265-95-7
- MF:C18H25N3O2
- Structure:
- Chemical Name:(1S,5R,6R)-5-Hydroxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic Acid Ethyl Ester
- CAS:876014-27-6
- MF:C9H12O4
- Structure:
- Chemical Name:(3R,5R)-Rosuvastatin Lactone
- CAS:1422954-11-7
- MF:C22H26FN3O5S
- Structure:
- Chemical Name:(S)-4,5,6,7-Tetrahydro-2,6-benzothiazolediamine
- CAS:1867177-06-7
- MF:C9H13N3OS
- Structure:
- Chemical Name:EMpagliflozin iMpurity 10
- CAS:2069942-68-1
- MF:C32H37ClO12
- Chemical Name:EMpagliflozin iMpurity 15
- CAS:
- MF: