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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Tetrahydro FuroseMide
- CAS:4793-38-8
- MF:C12H15ClN2O5S
- Structure:
- Chemical Name:6-O-DesMethoxyethyl-6-O-chloroethyl Erlotinib Hydrochloride
- CAS:183320-04-9
- MF:C21H21Cl2N3O3
- Structure:
- Chemical Name:Macitentan IMpurity
- CAS:556796-88-4
- MF:C17H15Br2N5O4S
- Structure:
- Chemical Name:4-((4-broMophenyl)(1H-1,2,4-triazol-1-yl)Methyl)benzonitrile
- CAS:143030-54-0
- MF:C16H11BrN4
- Structure:
- Chemical Name:Acetic acid, 2-[2-[4-(diphenylMethyl)-1-piperazinyl]ethoxy]-
- CAS:83881-53-2
- MF:C21H26N2O3
- Structure:
- Chemical Name:2-(DiethylaMino)-N-(2,3-diMethylphenyl)acetaMide Hydrochloride
- CAS:857170-72-0
- MF:C14H23ClN2O
- Structure:
- Chemical Name:4-Hydroxy Darunavir
- CAS:313682-97-2
- MF:C27H37N3O8S
- Structure:
- Chemical Name:Deschloroaripiprazole
- CAS:203395-81-7
- MF:C23H28ClN3O2
- Structure:
- Chemical Name:O-[(Guanin-9-yl)Methyl] Acyclovir
- CAS:166762-90-9
- MF:C14H16N10O4
- Structure:
- Chemical Name:3-(4-Carboethoxy)phenyl propanal
- CAS:151864-81-2
- MF:C12H14O3
- Structure:
- Chemical Name:(2,6-Xylyloxy)acetyl Lopinavir
- CAS:943250-65-5
- MF:C47H58N4O7
- Structure:
- Chemical Name:(S)-IsotiMolol (TiMolol IMpurity B)
- CAS:158636-96-5
- MF:C13H24N4O3S
- Chemical Name:Afatinib IMpurity A
- CAS:
- MF:
- Chemical Name:Afatinib IMpurity G
- CAS:
- MF:
- Chemical Name:Articaine IMpurity F (Articaine Acid PropionaMide HCl)
- CAS:
- MF:
- Structure:
- Chemical Name:Avanafil iMpurity 4
- CAS:874482-97-0
- MF:C8H11Cl2NO
- Structure:
- Chemical Name:Clopidogrel IMpurity 4
- CAS:801319-16-4
- MF:C15H14ClNO2S
- Structure:
- Chemical Name:Dehydro Azelnidipine
- CAS:918659-10-6
- MF:C33H32N4O6
- Structure:
- Chemical Name:DiazepaM IMpurity F
- CAS:31269-33-7
- MF:C16H13ClN2O
- Chemical Name:LaMotrigine IMpurity
- CAS:
- MF:
- Chemical Name:Ipragliflozin Impurity 6
- CAS:
- MF:
- Structure:
- Chemical Name:Ibrutinib Impurity 27
- CAS:2031255-26-0
- MF:C26H28N6O3
- Structure:
- Chemical Name:Clopidogrel Impurity 59
- CAS:1122047-98-6
- MF:C25H26ClNO6S
- Chemical Name:Ozagrel Impurity B
- CAS:
- MF:
- Chemical Name:Ceftriaxone Sodium impurity F
- CAS:
- MF:
- Structure:
- Chemical Name:(R)-5-(2-fluoro-3-methoxyphenyl)-1-(2-fluoro-6-(trifluoromethyl)benzyl)-6-methyl-3-(2-(2-oxopyrrolidin-1-yl)-2-phenylethyl)pyrimidine-2,4(1H,3H)-dione
- CAS:2248628-93-3
- MF:C32H28F5N3O4
- Structure:
- Chemical Name:Famotidine EP Impurity I HCl
- CAS:
- MF:C8H15N7O2S3
- Structure:
- Chemical Name:替扎尼定EP杂质C
- CAS:1147548-83-1
- MF:C16H14Cl2N10S2
- Chemical Name:nicergoline impurity Q
- CAS:
- MF:
- Structure:
- Chemical Name:Loratadine Impurity 19
- CAS:79779-58-1
- MF:C22H24N2O2
- Structure:
- Chemical Name:(Z)-2-chloro-3-hydroxyacrylaldehyde
- CAS:50704-42-2
- MF:C3H3ClO2
- Chemical Name:Ticagrelor Related Compound 39
- CAS:
- MF:
- Chemical Name:Erlotinib Impurity 32
- CAS:
- MF:
- Chemical Name:Pramipexole Impurity 36
- CAS:
- MF:
- Chemical Name:Teneligliptin Impurity 3
- CAS:
- MF:
- Chemical Name:Erlotinib Hydrochloride iMpurity 52
- CAS:
- MF:
- Structure:
- Chemical Name:Ornidazole Impurity J
- CAS:742020-47-9
- MF:C7H12N4O3
- Structure:
- Chemical Name:Daidzein-4′-glucoside
- CAS:58970-69-7
- MF:C21H20O9
- Chemical Name:Aprepitant iMpurity 45
- CAS:
- MF:
- Structure:
- Chemical Name:Afatinib Impurity 75
- CAS:2348580-72-1
- MF:C7H14N2O
- Structure:
- Chemical Name:Androstan-17-one,2,3-epoxy-16-(1-pyrrolidinyl)
- CAS:159325-45-8
- MF:C23H35NO2
- Structure:
- Chemical Name:(2b,3a,16b,17b)-2,16-Bispiperidino-3,17-diacetoxy-5-androstane
- CAS:13529-31-2
- MF:C33H54N2O4
- Structure:
- Chemical Name:Palbociclib Impurity 59
- CAS:1430196-98-7
- MF:C14H20N4O4
- Chemical Name:Landiolol impurity Z
- CAS:
- MF:
- Structure:
- Chemical Name:Vitamin K1 Impurity 1
- CAS:19274-66-9
- MF:C31H46O2
- Chemical Name:Teneligliptin Impurity 13
- CAS:
- MF:
- Structure:
- Chemical Name:Ceftazidime EP Impurity D
- CAS:73547-69-0
- MF:C45H44N6O7S2
- Structure:
- Chemical Name:Nicergoline EP Impurity G
- CAS:57935-65-6
- MF:C23H24BrN3O2
- Structure:
- Chemical Name:Benzenesulfonamide, 4-[5-(4-methylphenyl)-2-oxido-3-(trifluoromethyl)-1H-pyrazol-1-yl]-
- CAS:2356153-95-0
- MF:C17H14F3N3O3S
- Structure:
- Chemical Name:2-Pyrrolidinecarbonitrile, 1-(2-aminoacetyl)-, hydrochloride (1:1), (2S)-
- CAS:913980-23-1
- MF:C7H12ClN3O
- Structure:
- Chemical Name:Lamivudine Impurity 7
- CAS:147126-63-4
- MF:C14H24O4S
- Structure:
- Chemical Name:EsCitalopram EP Impurity I
- CAS:1370643-22-3
- MF:C20H21FN2O
- Structure:
- Chemical Name:(trans)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4-methoxyphenyl)-1-methylpiperidine
- CAS:127017-42-9
- MF:C21H25NO4
- Chemical Name:piperacillinylaMpicillin
- CAS:
- MF:
- Chemical Name:Celecoxib iMpurity-B
- CAS:
- MF:
- Chemical Name:EMtricitabine iMpurity B
- CAS:
- MF:
- Structure:
- Chemical Name:(S,S)-1,7-diazatricyclo[7.3.0.07,11]dodecane-2,6,8,12-tetrone
- CAS:14842-41-2
- MF:C10H10N2O4
- Structure:
- Chemical Name:1-Hydroxy-7-Methoxy-1,2,3,4-tetrahydronaphthalene
- CAS:32820-10-3
- MF:C11H14O2
- Structure:
- Chemical Name:BroMhexine Hydrochloride iMpurity DN-(2-AMino-5-broMobenzyl)-N-MethylcyclohexanaMine Dihydrochloride
- CAS:132004-28-5
- MF:C14H21BrN2
- Structure:
- Chemical Name:2-(DiMethylcarbaMoyl)benzoic acid, 97%
- CAS:20320-37-0
- MF:C10H11NO3
- Structure:
- Chemical Name:RAC DESMETHYL CITALOPRAM HYDROCHLORIDE
- CAS:97743-99-2
- MF:C19H19FN2O
- Structure:
- Chemical Name:rac-3-Oxo Atorvastatin SodiuM Salt
- CAS:1391052-00-8
- MF:C33H34FN2NaO5
- Structure:
- Chemical Name:2-Demethoxy-4-methoxy urapidil
- CAS:34661-79-5
- MF:C20H29N5O3
- Structure:
- Chemical Name:Ribavirin IMpurity F
- CAS:58151-87-4
- MF:C10H14N4O6
- Structure:
- Chemical Name:4-[-((-((4-(5-(Bis(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanoyl)oxy)ethyl)(2-hydroxyethyl)aMino)-1-Methyl-1H-benzo[d]iMidazol-2-yl)butanic Acid
- CAS:1228551-91-4
- MF:C32H41Cl3N6O4
- Structure:
- Chemical Name:3-(6,7-Dihydro-2-Methyl-7-oxo-3-propyl-2H-pyrazolo[4,3-d]pyriMidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride
- CAS:501120-42-9
- MF:C17H19ClN4O4S
- Structure:
- Chemical Name:(3R,4S)-rel-3-[(1,3-Benzodioxol-5-yloxy)Methyl]-4-(4'-fluoro[1,1'-biphenyl]-4-yl)-piperidine Hydrochloride
- CAS:1217655-87-2
- MF:C25H25ClFNO3
- Structure:
- Chemical Name:(16α)-16,17-[Butylidenebis(oxy)]-21-hydroxypregna-1,4-diene-3,11,20-trione
- CAS:216453-74-6
- MF:C25H32O6
- Structure:
- Chemical Name:6(S)-Hydroperoxy Simvastatin
- CAS:149949-01-9
- MF:C25H38O7
- Structure:
- Chemical Name:Russupteridine IV
- CAS:2535-20-8
- MF:C13H18N4O6
- Structure:
- Chemical Name:2-[(1-Benzylpiperidin-4-yl)hydroxyMethyl]-5,6-diMethoxyindan-1-one
- CAS:197010-20-1
- MF:C24H29NO4
- Structure:
- Chemical Name:5,6-trans-Ergocalciferol
- CAS:51744-66-2
- MF:C28H44O
- Structure:
- Chemical Name:2-isonicotinoyl-5,6-diMethoxy-2,3-dihydro-1H-inden-1-one
- CAS:923571-15-7
- MF:C17H15NO4
- Structure:
- Chemical Name:4-(2-nitrophenyl)Morpholin-3-one
- CAS:845729-41-1
- MF:C10H10N2O4
- Structure:
- Chemical Name:Methylprednisolone Impurity 21
- CAS:150899-33-5
- MF:C22H28O4
- Structure:
- Chemical Name:Epinephrine Impurity 7
- CAS:62322-82-1
- MF:C9H11NO3
- Structure:
- Chemical Name:(trans)-4-((2-amino-4,6-dibromobenzyl)amino)cyclohexanol
- CAS:
- MF:C13H18Br2N2O
- Chemical Name:Fesoterodine Impurity 14
- CAS:
- MF:
- Chemical Name:Dexamethasone EP impurities E
- CAS:
- MF:
- Structure:
- Chemical Name:(R)-N-((S)-2-aminobutanoyl)-3-(bromomethyl)hexanamide
- CAS:
- MF:C11H21BrN2O2
- Chemical Name:Empagliflozin Impurity 57（R,R）
- CAS:
- MF:
- Structure:
- Chemical Name:Azacitidine Impurity 37
- CAS:206269-46-7
- MF:C8H12N4O5
- Chemical Name:Aripiprazole peroxide degradation Impurity (MW:303Da)
- CAS:
- MF:
- Chemical Name:Pramipexole Impurity Reference
- CAS:
- MF:
- Structure:
- Chemical Name:3-[4-(acetyloxymethyl)phenyl]-2-propenoic acid methyl ester
- CAS:100688-45-7
- MF:C13H14O4
- Structure:
- Chemical Name:Acetaminophen Impurity 14
- CAS:1991204-56-8
- MF:C16H18N2O2
- Structure:
- Chemical Name:Ketoconazole Impurity 7
- CAS:172032-21-2
- MF:C11H12Cl2O3
- Chemical Name:Rosuvastatin Impurity 59
- CAS:
- MF:
- Structure:
- Chemical Name:Losartan Impurity 12
- CAS:727718-93-6
- MF:C22H22ClN9
- Structure:
- Chemical Name:benzyl (2S)-2-amino-3-(4-methanesulfonylphenyl)propanoate hydrochloride
- CAS:1865726-28-8
- MF:C17H19NO4S
- Structure:
- Chemical Name:Glycopyrrolate Impurity 12
- CAS:857353-41-4
- MF:C13H14O3
- Structure:
- Chemical Name:(4S,4aR,5R,12aS)-4-(dimethylamino)-3,5,10,11,12a-pentahydroxy-6-methyl-1,12-dioxo-1,4,4a,5,12,12a-hexahydrotetracene-2-carboxamide
- CAS:4660-26-8
- MF:C22H22N2O8
- Chemical Name:Regorafenib Impurity 38
- CAS:
- MF:
- Chemical Name:Cefazolin Impurity 28
- CAS:
- MF:
- Chemical Name:4-Isobutylacetophenone (Ibuprofen impurity)
- CAS:
- MF:
- Structure:
- Chemical Name:Acarbose Impurity IV (JP)
- CAS:
- MF:C13H21NO7
- Chemical Name:Vonoprazan Impurity 57
- CAS:
- MF:
- Structure:
- Chemical Name:Tafluprost Impurity 9
- CAS:2099033-66-4
- MF:C27H41NO8