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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:(1R,2S,3R)-Aprepitant
- CAS:1185502-97-9
- MF:C23H21F7N4O3
- Structure:
- Chemical Name:Clemastine
- CAS:108825-05-4
- MF:C21H26ClNO2
- Structure:
- Chemical Name:4-chloro-7-methoxyquinoline-6-carboxylic acid
- CAS:771464-30-3
- MF:C11H8ClNO3
- Structure:
- Chemical Name:ethyl (41S,13aR)-13a-ethyl-2,3,41,5,6,13a-hexahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate
- CAS:85647-43-4
- MF:C22H26N2O2
- Structure:
- Chemical Name:methyl (41R,12R,13aR)-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-carboxylate
- CAS:38990-16-8
- MF:C21H26N2O3
- Structure:
- Chemical Name:Dolutegravir Impurity 3
- CAS:1973402-05-9
- MF:C20H19F2N3O5
- Structure:
- Chemical Name:Cistracurium Besylate EP Impurity D
- CAS:1075726-88-3
- MF:C31H39NO9S
- Structure:
- Chemical Name:(R)-1-[3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-3-chloropropan-1-one
- CAS:1288338-96-4
- MF:C25H25ClN6O2
- Structure:
- Chemical Name:Bendamustine Impurity 8
- CAS:1797881-48-1
- MF:C14H19Cl2N3O2
- Structure:
- Chemical Name:FeBuxostat Impurity 32
- CAS:1805770-41-5
- MF:C12H12N2O
- Structure:
- Chemical Name:Edoxaban Impurity 9(1R,2S,4S)
- CAS:2024614-15-9
- MF:C21H30ClN5O5
- Structure:
- Chemical Name:Rivaroxaban Impurity 22
- CAS:1350288-77-5
- MF:C19H18ClN3O5S
- Structure:
- Chemical Name:Rivaroxaban Impurity 27
- CAS:1369969-44-7
- MF:C21H21N3O5
- Structure:
- Chemical Name:Abiraterone Impurity 9
- CAS:165334-72-5
- MF:C24H31NO
- Chemical Name:Gliclazide Impurity A
- CAS:
- MF:
- Structure:
- Chemical Name:Medetomidine Impurity 14
- CAS:79924-14-4
- MF:C13H16N2
- Structure:
- Chemical Name:Tenofovir Disoproxil Impurity B
- CAS:36817-69-3
- MF:C8H11N5O
- Chemical Name:Ipragliflozin IMP
- CAS:
- MF:
- Structure:
- Chemical Name:Dehydrodeoxy Donepezil (Donepezil Impurity)
- CAS:120013-45-8
- MF:C24H29NO2
- Structure:
- Chemical Name:Zolmitriptan
- CAS:139264-24-7
- MF:C16H21N3O2
- Structure:
- Chemical Name:2,3-Dimethylstyrene
- CAS:40243-75-2
- MF:C10H12
- Structure:
- Chemical Name:1,1'-Biphenyl-2-ylcarbamic acid
- CAS:50443-60-2
- MF:C13H11NO2
- Structure:
- Chemical Name:10-[3-(Dimethylamino)propyl]-10H-phenothiazine 5-oxide
- CAS:146-21-4
- MF:C17H20N2OS
- Structure:
- Chemical Name:(6E,10E)-7,11,15-Trimethyl-3-methylene-1,6,10,14-hexadecatetrene
- CAS:70901-63-2
- MF:C20H32
- Structure:
- Chemical Name:4-O-[4-[[(1S)-4β,5α,6β-Trihydroxy-3-(hydroxymethyl)-2-cyclohexen-1β-yl]amino]-4,6-dideoxy-α-D-glucopyranosyl]-D-glucose
- CAS:68128-53-0
- MF:C19H33NO13
- Structure:
- Chemical Name:4-O-[4-[[(1S)-4β,5α,6β-Trihydroxy-3-(hydroxymethyl)-2-cyclohexen-1β-yl]amino]-4,6-dideoxy-α-D-glucopyranosyl]-D-glucose
- CAS:68128-53-0
- MF:C19H33NO13
- Structure:
- Chemical Name:CLARITHROMYCIN OXIME
- CAS:127253-06-9
- MF:C38H70N2O13
- Structure:
- Chemical Name:PYRIDINE,3,5-BIS(BROMOMETHYL)-
- CAS:35991-75-4
- MF:C7H7Br2N
- Structure:
- Chemical Name:alpha-Hydroxy-alpha-phenylbenzeneacetic acid (3-endo)-8-azabicyclo[3.2.1]oct-3-yl ester hydrochloride
- CAS:63516-30-3
- MF:C21H24ClNO3
- Structure:
- Chemical Name:N-(4-(METHYLAMINO)BENZOYL)-L-GLUTAMIC ACID
- CAS:52980-68-4
- MF:C13H16N2O5
- Structure:
- Chemical Name:(2R)-N-(2,6-DIMETHYLPHENYL)-2-PIPERIDINECARBOXAMIDE
- CAS:27262-43-7
- MF:C14H20N2O
- Structure:
- Chemical Name:Phosphine oxide, tris (2-methylphenyl)-
- CAS:6163-63-9
- MF:C21H21OP
- Structure:
- Chemical Name:2-(7-Methoxynaphthalen-1-yl)acetamide
- CAS:138113-07-2
- MF:C13H13NO2
- Structure:
- Chemical Name:2-(7-Methoxynaphthalen-1-yl)acetamide
- CAS:138113-07-2
- MF:C13H13NO2
- Structure:
- Chemical Name:2-(2-carboxyethyl)-1-[(3,4-dimethoxyphenyl)methyl]-,1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-isoquinolinium benzenesulfonate
- CAS:1075727-06-8
- MF:C30H37NO9S
- Structure:
- Chemical Name:5,11-dihydro-6H-11-ethyl-4-Methyl-dipyrido[3,2-b:2',3'-e][1,4]diazepin-6-one
- CAS:133627-17-5
- MF:C14H14N4O
- Structure:
- Chemical Name:rac Des(isopropylaMino) Acebutolol Diol
- CAS:96480-91-0
- MF:C15H21NO5
- Structure:
- Chemical Name:(17α)-17-Hydroxy-3-oxo-19-norpregna-5(10),9(11)-diene-21-nitrile
- CAS:106111-42-6
- MF:C20H25NO2
- Structure:
- Chemical Name:(3S)-N-[[(1S)-1,2,3,4-Tetrahydro-1-naphthalenyl]Methyl]-1-azabicyclo[2.2.2]octan-3-aMine
- CAS:177793-80-5
- MF:C18H26N2
- Structure:
- Chemical Name:4-(4-Fluorophenyl)-1-Methyl-
- CAS:1012886-75-7
- MF:C12H15ClFN
- Structure:
- Chemical Name:5'(S)-Hydroxy SiMvastatin DISCONTINUED
- CAS:149949-05-3
- MF:C25H38O6
- Structure:
- Chemical Name:5'-Epi-LaMivudine
- CAS:136846-20-3
- MF:C8H11N3O3S
- Structure:
- Chemical Name:N-ForMyl-D-ribofuranosyl-3-guanylurea (α/β-Mixture)
- CAS:686299-20-7
- MF:C8H14N4O6
- Structure:
- Chemical Name:SiMvastatin 4'-Methyl Ether
- CAS:864357-88-0
- MF:C26H40O5
- Structure:
- Chemical Name:(2S,3S,5S)-5-(tert-Butoxycarbonylamino)-2-(N-5-thiazolylmethoxycarbonyl)amino-1,6-diphenyl-3-hydroxyhexane
- CAS:162849-95-8
- MF:C28H35N3O5S
- Structure:
- Chemical Name:1-[3-(Benzoyloxy)propyl]-2,3-dihydro-5-[(2R)-2-[[2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl]amino]propyl]-1H-indole-7-carbonitrile
- CAS:885340-11-4
- MF:C32H34F3N3O4
- Structure:
- Chemical Name:4-DesMethoxy-4-broMo TriMethopriM
- CAS:16285-82-8
- MF:C13H15BrN4O2
- Structure:
- Chemical Name:Diaquo[(1R,2R)-1,2-cyclohexanediaMine]platinuM DiMer Dinitrate
- CAS:82398-34-3
- MF:C12H24N5O5Pt2+
- Chemical Name:Afatinib Impurity M
- CAS:
- MF:
- Structure:
- Chemical Name:Ornidazole Impurity
- CAS:1100750-18-2
- MF:
- Structure:
- Chemical Name:4-(3-nitrophenyl)-3-Morpholinone
- CAS:845729-43-3
- MF:C10H10N2O4
- Structure:
- Chemical Name:2-Propanone, 1,3-bis(4-methoxyphenyl)-
- CAS:29903-09-1
- MF:C17H18O3
- Structure:
- Chemical Name:1,2,4-Triazolo[4,3-a]pyrazine, 7-[3-amino-1-oxo-4-(2,4,5-trifluorophenyl)-2-butenyl]-5,6,7,8-tetrahydro- 3-(trifluoromethyl)-
- CAS:847445-81-2
- MF:C16H13F6N5O
- Structure:
- Chemical Name:4-Difluoromethoxy-2-nitro-aniline
- CAS:97963-76-3
- MF:C7H6F2N2O3
- Structure:
- Chemical Name:1-NaphthaleneMethanaMine, α-Methyl-N-[[3-(trifluoroMethyl)phenyl]Methyl]-, (αR)-
- CAS:1229512-52-0
- MF:C20H18F3N
- Structure:
- Chemical Name:Benzoic acid, 2-[[[[(5S)-2-oxo-3-[4-(3-oxo-4-Morpholinyl)phenyl]-5-oxazolidinyl]Methyl]aMino]carbonyl]-
- CAS:1365267-37-3
- MF:C22H21N3O7
- Structure:
- Chemical Name:NSC 609249
- CAS:51012-67-0
- MF:C12H20ClNO2
- Structure:
- Chemical Name:1-[(4-Ethoxy-3-formylphenyl)sulfonyl]-4-methylpiperazine
- CAS:332374-42-2
- MF:C14H20N2O4S
- Structure:
- Chemical Name:ApovincaMinic Acid Ethyl Ester N-Oxide
- CAS:109741-24-4
- MF:C22H26N2O3
- Structure:
- Chemical Name:(2R,4S)-ethyl 5-([1,1'-biphenyl]-4-yl)-4-aMino-2-Methylpentanoate
- CAS:752174-62-2
- MF:C20H25NO2
- Chemical Name:EMpagliflozin iMpurity 12
- CAS:
- MF:
- Structure:
- Chemical Name:(2S,4R)-Teneligliptin
- CAS:1404559-15-4
- MF:C22H30N6OS
- Structure:
- Chemical Name:Daclatasvir Impurity
- CAS:1417333-83-5
- MF:C40H50N8O6
- Structure:
- Chemical Name:(3aS,12bS)-2-Methyl-2,3,3a,12b-tetrahydro-1H-dibenzo[2,3:6,7]oxepino[4,5-c]pyrrole
- CAS:65576-39-8
- MF:C17H17NO
- Structure:
- Chemical Name:1-[2-[(3,4-diMethylphenyl)thio]phenyl]- Piperazine
- CAS:1293489-74-3
- MF:C18H22N2S
- Structure:
- Chemical Name:N-acetyl-N-(2-(7-Methoxynaphthalen-1-yl)ethyl)acetaMide
- CAS:1379005-34-1
- MF:C17H19NO3
- Structure:
- Chemical Name:N-acetyl-N-(2-(7-Methoxynaphthalen-1-yl)ethyl)acetaMide
- CAS:1379005-34-1
- MF:C17H19NO3
- Chemical Name:carfilzoMib iMpurity -A
- CAS:
- MF:
- Structure:
- Chemical Name:(3S,4R)-1-(4-fluorophenyl)-3-((S)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4-hydroxyphenyl)azetidin-2-one
- CAS:1593543-00-0
- MF:C24H21F2NO3
- Structure:
- Chemical Name:ethyl N-((2'-(1H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)Methyl)-N-pentanoyl-L-valinate
- CAS:1111177-30-0
- MF:C26H33N5O3
- Structure:
- Chemical Name:Rosuvastatin EP impurity A
- CAS:1714147-50-8
- MF:C25H34FN3NaO7S*
- Structure:
- Chemical Name:Doxorubicin Impurity 6
- CAS:69429-21-6
- MF:C26H27NO11
- Structure:
- Chemical Name:Etoricoxib Impurity 11
- CAS:202409-31-2
- MF:C17H13ClN2O2S
- Structure:
- Chemical Name:Levofloxacin Tetrafluoro Impurity 1
- CAS:110548-02-2
- MF:C15H15F4NO4
- Structure:
- Chemical Name:Penicillin F Potassium Salt
- CAS:97299-13-3
- MF:C14H21KN2O4S
- Structure:
- Chemical Name:Olaparib Impurity 31
- CAS:458535-34-7
- MF:C12H18N2O2
- Structure:
- Chemical Name:Macitentan impurity A
- CAS:441798-25-0
- MF:C17H16Br2N6O4S
- Structure:
- Chemical Name:4-(3,4-DICHLOROPHENYL)-3,4-DIHYDRO-2H-NAPHTHALEN-1-ONE OXIME
- CAS:152642-35-8
- MF:C16H13Cl2NO
- Structure:
- Chemical Name:3-Pyridinecarboxylic acid, 6-(4-carboxy-1-piperidinyl)-5-chloro-
- CAS:958457-83-5
- MF:C12H13ClN2O4
- Chemical Name:Linagliptin Impurity C
- CAS:
- MF:
- Chemical Name:Parecoxib Impurity B
- CAS:
- MF:
- Chemical Name:Vildagliptin impurity E
- CAS:
- MF:
- Structure:
- Chemical Name:3-propylisobenzofuran-1(3H)-one
- CAS:72424-08-9
- MF:C11H12O2
- Structure:
- Chemical Name:Axitinib Sulfonyl
- CAS:1348536-59-3
- MF:C22H18N4O3S
- Chemical Name:Atracurium Impurity B
- CAS:87046-74-0
- MF:
- Structure:
- Chemical Name:(R)-4-fluoro-2-((3-methyl-6-(3-((1-methyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)amino)piperidin-1-yl)-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile
- CAS:
- MF:C23H24FN7O4
- Structure:
- Chemical Name:2-(2-fluorophenyl)-1-(1H-1,2,4-triazol-1-yl)-3-(4H-1,2,4-triazol-4-yl)propan-2-ol
- CAS:
- MF:C13H13FN6O
- Structure:
- Chemical Name:Dapagliflozin Impurity 10
- CAS:960404-86-8
- MF:C21H25ClO7
- Structure:
- Chemical Name:Ibrutinib Impurity 6
- CAS:1917333-91-5
- MF:C28H26N6O3
- Chemical Name:Imatinib Impurity 5
- CAS:
- MF:
- Structure:
- Chemical Name:Mirabegron Impurity 8 HCl
- CAS:1684452-81-0
- MF:C21H24N4O2S
- Chemical Name:Regorafenib Impurity 2
- CAS:
- MF:
- Chemical Name:Vonoprazan Impurity 5
- CAS:
- MF:
- Structure:
- Chemical Name:Bendamustine
- CAS:1219709-86-0
- MF:C14H18ClN3O2
- Chemical Name:Dapagliflozin Impurity E
- CAS:
- MF:
- Structure:
- Chemical Name:Febuxostat Impurity 14
- CAS:1335202-60-2
- MF:C15H16N2OS
- Structure:
- Chemical Name:Kaempferol 3-robinoside 7-glucoside
- CAS:114924-89-9
- MF:C33H40O20
- Structure:
- Chemical Name:Vitexin 7-glucoside
- CAS:35109-95-6
- MF:C27H30O15