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Pharmaceutical Impurity Reference Standards
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- 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
- 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:L-erythro-3-(3,4-Dihydroxyphenyl)serine
- CAS:34047-62-6
- MF:C9H11NO5
- Structure:
- Chemical Name:4-PyridinecarboxaMide, N-(2,6-diMethylphenyl)-
- CAS:68280-05-7
- MF:C14H14N2O
- Structure:
- Chemical Name:4-N-Desacetyl-5-N-acetyl OseltaMivir
- CAS:956267-10-0
- MF:C16H28N2O4
- Structure:
- Chemical Name:rac N-DesMethyl-N-(4-Methoxyphenethyl) Venlafaxine
- CAS:1346601-14-6
- MF:C25H35NO3
- Structure:
- Chemical Name:11-Keto Oxcarbazepine
- CAS:537693-29-1
- MF:C15H10N2O3
- Structure:
- Chemical Name:Isopropyl 4-(3-AMinophenyl)-1,4-dihydro-5-(2-Methoxyethoxycarbonyl)-2,6-diMethylpyridine-3-carboxylate
- CAS:155861-24-8
- MF:C21H28N2O5
- Structure:
- Chemical Name:Salmeterol Related Compound B (10 mg) (4-{1-Hydroxy-2-[6-(4-phenylbutan-2-yloxy)hexylamino]ethyl}-2-(hydroxymethyl)phenol)
- CAS:108928-81-0
- MF:C25H37NO4
- Structure:
- Chemical Name:N-[3-[3-(1-Piperidinylmethyl)phenoxy]propyl]amine
- CAS:73278-98-5
- MF:C15H24N2O
- Structure:
- Chemical Name:7,10-Bis-O-(2,2,2-trichloroethoxycarbonyl)-10-deacetylbaccatin III
- CAS:95603-44-4
- MF:C35H38Cl6O14
- Structure:
- Chemical Name:4-(3-AMino-phenyl)-Morpholin-3-one
- CAS:1082495-22-4
- MF:C10H12N2O2
- Chemical Name:AlviMopan iMpurity
- CAS:
- MF:
- Chemical Name:Caspofungin iMpurity
- CAS:146669-22-9
- MF:
- Structure:
- Chemical Name:Saxagliptin iMpurity
- CAS:2173146-35-3
- MF:C18H23N3O2.ClH
- Structure:
- Chemical Name:Chlorocriptine
- CAS:68944-88-7
- MF:C32H40ClN5O5
- Structure:
- Chemical Name:PD 312237
- CAS:501666-23-5
- MF:C20H35NO11
- Structure:
- Chemical Name:(1R,5S,6S)-rel-5-(1-Ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic Acid Methyl Ester
- CAS:1234858-94-6
- MF:C13H20O4
- 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
- Chemical Name:Bimatoprost Impurity 17
- CAS:
- MF:
- Structure:
- Chemical Name:Metronidazole IMpurity (1-Methyl-4-Nitro-1H-IMidazole)
- CAS:143508-97-8
- MF:C2H3NO
- Structure:
- Chemical Name:benidipine
- CAS:119009-45-9
- MF:C28H31N3O6
- Structure:
- Chemical Name:(S)-Phenylephrine hydrochloride
- CAS:939-38-8
- MF:C9H14ClNO2
- Structure:
- Chemical Name:ethylmethylglycinexylidide
- CAS:74634-66-5
- MF:C13H20N2O
- Structure:
- Chemical Name:N1-Losartanyl-losartan (Losartan IMpurity)
- CAS:230971-71-8
- MF:C44H44Cl2N12O
- Structure:
- Chemical Name:N2-Losartanyl-losartan (Losartan IMpurity)
- CAS:230971-72-9
- MF:C44H44Cl2N12O
- Structure:
- Chemical Name:N-Ethoxycarbonyl 7-ADCA
- CAS:72820-16-7
- MF:C11H14N2O5S
- Structure:
- Chemical Name:(E)-Olopatadine
- CAS:113806-06-7
- MF:C21H23NO3
- Structure:
- Chemical Name:NeMadipine B
- CAS:79925-38-5
- MF:C19H21Cl2NO4
- Structure:
- Chemical Name:N-[(3,4-DiMethoxy-2-pyridinyl)Methyl] Pantoprazole
- CAS:957470-59-6
- MF:C24H24F2N4O6S
- Structure:
- Chemical Name:4-Epi-6-epi Doxycycline
- CAS:97583-08-9
- MF:C22H24N2O8
- Structure:
- Chemical Name:Ethyl 3,4-O-Isopropylidene-5-O-methanesulfonylshikimate
- CAS:204254-84-2
- MF:C13H20O7S
- Structure:
- Chemical Name:2-PyrazinecarboxaMide, N,N',N''-[2,4,6-boroxintriyltris[[(1R)-3-Methylbutylidene]iMino[(1S)-2-oxo-1-(phenylMethyl)-2,1-ethanediyl]]]tris-
- CAS:390800-88-1
- MF:C57H69B3N12O9
- Structure:
- Chemical Name:D-hydroxyphenylglycylamoxicillin)
- CAS:188112-75-6
- MF:C24H26N4O7S
- 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:C8H10ClNO.ClH
- 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:
- Structure:
- Chemical Name:Posaconazole DiastereoisoMer interMediate 5
- CAS:149809-42-7
- MF:C21H21F2N3O4S
- Structure:
- Chemical Name:Prasugrel alpha-Hydroxy IMpurity
- CAS:1100905-45-0
- MF:C11H11FO2
- Structure:
- Chemical Name:Solifenacin Related CoMpound 2 Succinate
- CAS:1262506-09-1
- MF:C23H26N2O2.C4H6O4
- 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:Dehydrocarteolol Hydrochloride
- CAS:62330-84-1
- MF:C16H22N2O3
- 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:AlMotriptan Related CoMpound B
- CAS:1246860-65-0
- MF:C19H25N3O6S
- Chemical Name:Benazepril Related CoMpound B
- CAS:
- MF:
- Structure:
- Chemical Name:IMatinib iMpurity
- CAS:152459-96-6
- MF:C24H21N5O
- Structure:
- Chemical Name:(2R,3R,4R,5S,6R)-2-(acetoxyMethyl)-6-(3-((5-(4-fluorophenyl)thiophen-2-yl)Methyl)-4-Methylphenyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate
- CAS:2803372-74-7
- MF:C32H33FO9S
- Structure:
- Chemical Name:1,2-BenzenedicarboxaMide, N1,N2-bis[[(5S)-2-oxo-3-[4-(3-oxo-4-Morpholinyl)phenyl]-5-oxazolidinyl]Methyl]-
- CAS:1365267-36-2
- MF:C36H36N6O10
- Structure:
- Chemical Name:2-QuinazolineMethanol, 4-Methyl-
- CAS:13535-91-6
- MF:C10H10N2O
- Structure:
- Chemical Name:5-(2,2-diMethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one
- CAS:452340-96-4
- MF:C13H15NO4