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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:5-(4'-((2-butyl-4-chloro-5-(isopropoxymethyl)-1H-imidazol-1-yl)methyl)-[1,1'-biphenyl]-2-yl)-1H-tetrazole
- CAS:1332713-64-0
- MF:C25H29ClN6O
- Chemical Name:Afatinib Impurity L (Afatinib N-Oxide)
- CAS:
- MF:
- Chemical Name:Afatinib Impurity L (Afatinib N-Oxide)
- CAS:
- MF:
- Structure:
- Chemical Name:Mirabegron Deshydroxy
- CAS:1581284-82-3
- MF:C21H24N4OS
- Structure:
- Chemical Name:4-Thiazoleacetyl chloride, 2-amino-, monohydrochloride
- CAS:66313-72-2
- MF:C5H6Cl2N2OS
- Structure:
- Chemical Name:1,2-bis(bromomethyl)-4,5-dimethoxybenzene
- CAS:26726-81-8
- MF:C10H12Br2O2
- Chemical Name:Alvimopan Impurity 2
- CAS:
- MF:
- Chemical Name:Alvimopan Impurity 4
- CAS:
- MF:
- Chemical Name:Isavuconazole Impurity 13
- CAS:
- MF:
- Structure:
- Chemical Name:Sofosbuvir Impurity13
- CAS:220503-64-0
- MF:C38H31N3O9
- Structure:
- Chemical Name:21-Acetyl-6β-fluorotriamcinolone Acetonide
- CAS:67438-37-3
- MF:C26H32F2O7
- Structure:
- Chemical Name:Quetiapine EP Impurity W
- CAS:1800608-95-0
- MF:C34H32N4O2S2
- Structure:
- Chemical Name:(2R,3R)-1,1,4,4-tetraphenylbutane-1,2,3,4-tetrol
- CAS:117780-08-2
- MF:C28H26O4
- Structure:
- Chemical Name:(11β,16α)-21-(Acetyloxy)-11,16,17-trihydroxypregna-1,4,14-triene-3,20-dione
- CAS:131918-72-4
- MF:C23H28O7
- Structure:
- Chemical Name:(S)-Alogliptin Benzoate Salt
- CAS:1638544-64-5
- MF:C25H27N5O4
- Structure:
- Chemical Name:(S)-Alogliptin Benzoate Salt
- CAS:1638544-64-5
- MF:C25H27N5O4
- Structure:
- Chemical Name:O-Acetyl Silodosin
- CAS:160970-86-5
- MF:C27H34F3N3O5
- Structure:
- Chemical Name:Azilsartan Impurity
- CAS:1675221-59-6
- MF:C25H22N2O5
- Chemical Name:Agomelatine Impurity 1
- CAS:
- MF:
- Chemical Name:Agomelatine Impurity 1
- CAS:
- MF:
- Chemical Name:Olaparib Impurity I
- CAS:
- MF:
- Chemical Name:Brexpiprazole Impurity C
- CAS:
- MF:
- Chemical Name:Dapoxetine Impurity 7
- CAS:
- MF:
- Structure:
- Chemical Name:Irbesartan Impurity 5
- CAS:1213252-81-3
- MF:C25H28N6O
- Chemical Name:Cabozantinib impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:Loratadine Impurity 4
- CAS:
- MF:C22H23ClN2O2
- Structure:
- Chemical Name:Metoprolol IMpurity 4
- CAS:
- MF:C15H25NO3
- Chemical Name:Mirabegron Impurity 10
- CAS:
- MF:
- Structure:
- Chemical Name:8-cyclopentyl-6-(1-hydroxyethyl)-5-methyl-2-((5-(piperazin-1-yl)pyridin-2-yl)amino)pyrido[2,3-d]pyrimidin-7(8H)-one
- CAS:1376615-91-6
- MF:C24H31N7O2
- Chemical Name:Plerixafor Impurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Ceftazidime Impurity G
- CAS:138829-73-9
- MF:C11H14N4O5S
- Chemical Name:Vonoprazan Impurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:Umeclidinium Bromide Impurity 4
- CAS:869112-31-2
- MF:C22H28BrNO2
- Chemical Name:Deschloro Etoricoxib
- CAS:
- MF:
- Structure:
- Chemical Name:Cefazolin impurity B
- CAS:1798004-55-3
- MF:C16H20N4O4S3.Na
- Structure:
- Chemical Name:5-chloro-N-(4-((S)-5-((5-chlorothiophene-2-carboxamido)methyl)-2-oxooxazolidin-3-yl)phenyl)-N-(2-(2-oxo-2-((((S)-2-oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methyl)amino)ethoxy)ethyl)thiophene-2-carboxamide
- CAS:1632463-24-1
- MF:C38H36Cl2N6O10S2
- Structure:
- Chemical Name:Apremilast Impurity 4
- CAS:1831833-38-5
- MF:C12H16O4S
- Chemical Name:Rivaroxaban Impurity 16
- CAS:
- MF:
- Chemical Name:Topiroxostat Impurity 3
- CAS:
- MF:
- Chemical Name:Diroxide Impurity 4
- CAS:
- MF:
- Structure:
- Chemical Name:(R,E)-4-((3-(3-(diisopropylamino)-1-phenylpropyl)-4-hydroxybenzyl)oxy)-4-oxobut-2-enoic acid
- CAS:
- MF:C26H33NO5
- Structure:
- Chemical Name:Flomoxef Impurity 2
- CAS:1208982-59-5
- MF:C32H30N6O7S
- Chemical Name:Lincomycin impurity B
- CAS:
- MF:
- Structure:
- Chemical Name:Valsartan Impurity 1
- CAS:914465-68-2
- MF:C19H21N5O
- Structure:
- Chemical Name:Axitinib Impurity 2
- CAS:1428728-83-9
- MF:C44H36N8O2S2
- Structure:
- Chemical Name:Ethanone, 1-[3,5-bis(phenylmethoxy)phenyl]-2-[(1,1-dimethylethyl)(phenylmethyl)amino]-, sulfate (1:1)
- CAS:52144-93-1
- MF:C33H37NO7S
- Chemical Name:Metronidazole Impurity 2
- CAS:
- MF:
- Structure:
- Chemical Name:ethyl 2-(3-cyano-4-isopropoxyphenyl)-4-methylthiazole-5- carboxylate
- CAS:144060-84-4
- MF:C17H18N2O3S
- Chemical Name:Dasatinib Impurity 24
- CAS:
- MF:
- Structure:
- Chemical Name:Pregabalin Impurity 19
- CAS:89015-27-0
- MF:C11H14O3
- Structure:
- Chemical Name:Quercetin 3-O-(6''-galloyl)-β-D-glucopyranoside
- CAS:56316-75-7
- MF:C28H24O16
- Chemical Name:Alogliptin Impurity 7
- CAS:
- MF:
- Chemical Name:Alogliptin Impurity 7
- CAS:
- MF:
- Structure:
- Chemical Name:diethyl 2-(2-bromoethyl)-malonate
- CAS:18721-64-7
- MF:C9H15BrO4
- Structure:
- Chemical Name:methyl 2,5-dihydroxybenzenesulfonate
- CAS:
- MF:C7H8O5S
- Chemical Name:Pinocembroside,Pinocembrin41-O-beta-D-glucoside
- CAS:
- MF:
- Structure:
- Chemical Name:4-(1-(dimethylamino)ethyl)phenyl ethyl(methyl)carbamate 2,3- dihydroxysuccinate
- CAS:123441-05-4
- MF:C14H22N2O2
- Structure:
- Chemical Name:Dapagliflozin mono acetyl impurity
- CAS:1632287-34-3
- MF:C23H27ClO7
- Chemical Name:Piperacillin Impurity 3
- CAS:
- MF:
- Structure:
- Chemical Name:Varenicline Impurity 5
- CAS:950781-87-0
- MF:C11H13N3O2
- Structure:
- Chemical Name:4-MORPHOLIN-4-YL-1,2,5-THIADIAZOL-3-OL
- CAS:30165-97-0
- MF:C6H9N3O2S
- Structure:
- Chemical Name:Amlodipine Impurity 29
- CAS:93848-82-9
- MF:C22H27ClN2O6
- Structure:
- Chemical Name:Amlodipine Impurity 34
- CAS:
- MF:C26H31ClN2O8S
- Structure:
- Chemical Name:1-benzyl-4-(piperidin-1-yl)-1,2,3,6-tetrahydropyridine
- CAS:53877-76-2
- MF:C17H24N2
- Structure:
- Chemical Name:propan-2-yl 2-[(4R,6R)-6-{2-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-(propan-2-yl)-1H-pyrrol-1-yl]ethyl}-2,2-dimethyl-1,3-dioxan-4-yl]acetate
- CAS:1112262-71-1
- MF:C39H45FN2O5
- Structure:
- Chemical Name:Pregna-1,4-diene-3,20-dione, 21-(acetyloxy)-9,11-epoxy-16,17-dihydroxy-, (9β,11β,16α)-
- CAS:58404-37-8
- MF:C23H28O7
- Structure:
- Chemical Name:TYRPHOSTIN AG 1290
- CAS:160391-70-8
- MF:C10H6N2O6
- Structure:
- Chemical Name:N-[1-(4-methoxyphenyl)-2-methylpropan-2-yl]acetamide
- CAS:926319-54-2
- MF:C13H19NO2
- Structure:
- Chemical Name:Cetirizine EP Impurity B(base)
- CAS:942193-17-1
- MF:C19H21ClN2O2
- Structure:
- Chemical Name:Dezocine Impurity 3
- CAS:100667-16-1
- MF:C16H21NO2
- Structure:
- Chemical Name:Ertapenem Impurity 10
- CAS:357154-27-9
- MF:C22H27N3O8S
- Structure:
- Chemical Name:loteprednol Impurity 8
- CAS:207670-54-0
- MF:C24H29ClO7
- Structure:
- Chemical Name:Nimodipine Impurity 4
- CAS:74936-69-9
- MF:C18H20N2O6
- Structure:
- Chemical Name:Paroxetine Impurity 45
- CAS:1396174-70-1
- MF:C19H20FNO3
- Structure:
- Chemical Name:Tazobactam Impurity 5
- CAS:115546-67-3
- MF:C21H20ClNO3S
- Structure:
- Chemical Name:Tigecycline Impurity 2
- CAS:1422262-97-2
- MF:C29H39N5O8
- Chemical Name:Empagliflozin Impurity 34
- CAS:
- MF:
- Structure:
- Chemical Name:Sugammadex Impurity 22
- CAS:2412952-94-2
- MF:C72H113NaO48S8
- Structure:
- Chemical Name:Febuxostat
- CAS:1312815-36-3
- MF:C20H25NO4S
- Structure:
- Chemical Name:Itraconazole Impurity 34
- CAS:103661-14-9
- MF:C14H15Cl2N3O5S
- Structure:
- Chemical Name:Lansoprazole Impurity 34
- CAS:1357726-93-2
- MF:C7H8N2O3
- Structure:
- Chemical Name:Meloxicam Impurity 1 HCl
- CAS:929568-25-2
- MF:C4H7ClN2O
- Structure:
- Chemical Name:Palonosetron Impurity 11
- CAS:2216753-67-0
- MF:C18H24N2O
- Structure:
- Chemical Name:Dapagliflozin Impurity 10
- CAS:461432-27-9
- MF:C21H25ClO7
- Structure:
- Chemical Name:Levetiracetam impurity 2
- CAS:1341459-52-6
- MF:C8H17N3O2
- Structure:
- Chemical Name:(S)-5-chloro-N-(3-(5-chlorothiophene-2-carboxamido)-2- hydroxypropyl)-N-(4-(3-oxomorpholino)phenyl)thiophene-2- carboxamide
- CAS:2204368-63-6
- MF:C23H21Cl2N3O5S2
- Structure:
- Chemical Name:Ezetimibe Impurity 38
- CAS:1701462-59-0
- MF:C45H58F2N2O5Si2
- Structure:
- Chemical Name:Indapamide Impurity F
- CAS:62574-66-7
- MF:C7H3Cl3O3S
- Structure:
- Chemical Name:Moxifloxacin Impurity 38
- CAS:1262758-66-6
- MF:C21H24FN3O5
- Structure:
- Chemical Name:Nimodipine Impurity 3
- CAS:101072-61-1
- MF:C11H9NO5
- Chemical Name:Pitavastatin Impurity 40
- CAS:
- MF:
- Chemical Name:Ritonavir EP Impurity R
- CAS:
- MF:
- Structure:
- Chemical Name:Ticagrelor Impurity 68
- CAS:1643378-46-4
- MF:C23H29FN6O4S
- Chemical Name:Tofacitinib Impurity 70
- CAS:
- MF:
- Chemical Name:Afatinib Impurity 22
- CAS:
- MF:
- Chemical Name:Amifostine Impurity 6
- CAS:
- MF:
- Chemical Name:Apixaban Impurity 33
- CAS:
- MF:
- Chemical Name:Aztreonam Impurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:Clarithromycin Impurity EP G
- CAS:107216-09-1
- MF:C39H72N2O13
- Chemical Name:Dapagliflozin Impurity 32
- CAS:
- MF: