Structure |
Chemical Name |
CAS |
MF |
 |
Gimeracil Impurity |
17902-24-8 |
C8H9ClN2O3 |
 |
Pramipexole Impurity H |
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 |
Rivaroxaban Impurity H |
1807455-76-0 |
C25H24Cl2N4O6S2 |
 |
Vonoprazan impurity A |
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 |
5-ethyl 3-isopropyl 2-((2-aminoethoxy)methyl)-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate |
2170716-02-4 |
C22H29ClN2O5 |
 |
Ibrutinib impurity D |
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 |
Mupirocin impurity A |
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C26H44O9 |
 |
FG-4592 intermediate7 |
1509958-19-3 |
C20H20N2O4 |
 |
Milnacipran Impurity 13 |
710339-49-4 |
C12H16NO+ |
 |
Urapidil Impurity A |
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 |
Tofacitinib Impurity I |
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 |
N-(3-chloro-4-fluorophenyl)-6 ,7-dimethoxyquinazolin-4-amine |
153437-78-6 |
C16H13ClFN3O2 |
 |
Itopride Impurity C |
141996-97-6 |
C19H24N2O4 |
 |
Mirabegron Impurity |
1796931-48-0 |
C21H24N4O2S |
 |
FAMOTIDINE RELATED COMPOUND B |
89268-62-2 |
C16H23N11O2S5 |
 |
TIZOXANIDE GLUCURONIDE, SODIUM SALT |
221287-83-8 |
C16H14N3NaO10S |
 |
Sugammadex sodium Impurity 50 |
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 |
Cabozantinib impurity 39 |
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 |
Cabozantinib impurity 53 |
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 |
1-(2-chloro-2-(2,4-difluorophenyl)ethyl)-1H-1,2,4-triazole |
206050-24-0 |
C10H8ClF2N3 |
 |
methyl 1-phenylethanesulfonate |
883835-57-2 |
C9H12O3S |
 |
Doxofylline Impurity 22 |
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 |
Dapoxetine impurity 61 |
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 |
Dapoxetine impurity 55 |
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 |
1-METHYLBIGUANIDE SULPHATE |
1609-00-3 |
C3H9N5 |
![1-(3,5-DIHYDROXYPHENYL)-2-[(1,1-DIMETHYLETHYL)AMINO]-ETHANONE, HYDROCHLORIDE](/StructureFile/ChemBookStructure8/GIF/CB2752536.gif) |
1-(3,5-DIHYDROXYPHENYL)-2-[(1,1-DIMETHYLETHYL)AMINO]-ETHANONE, HYDROCHLORIDE |
1246815-70-2 |
C12H18ClNO3 |
 |
4-(((2R,3S,4R,5R,6R)-6-(Benzyloxy)-3-((diphenoxyphosphoryl)oxy)-4-(tetradecanoyloxy)-5-((S)-3-(tetradecanoyloxy)tetradecanaMido)tetrahydro-2H-pyran-2-yl)Methoxy)-4-oxobutanoic acid |
110611-91-1 |
C71H110NO15P |
 |
Oxacillin Impurity H |
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 |
(2S,3R)-3-(6-(1-(6-chloro-5-fluoropyrimidin-4-yl)ethyl)-5-fluoropyrimidin-4-yl)-2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol |
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 |
PeraMpanel |
380918-54-7 |
C23H15N3O |
 |
Empagliflozin Impurity 79 |
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 |
Empagliflozin Impurity 89 |
2452301-32-3 |
C23H25ClO7 |
 |
Levocarnitine Impurity F |
6490-19-3 |
C7H17ClN2O2 |
 |
4,4-dimethyl-2-(2-phenylpropan-2-yl)oxazo‐ line |
874895-87-1 |
C14H19NO |
 |
Formoterol Impurity 4 |
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 |
Roxadustat-001 |
319-57-3 |
C8H5BF4N2O2 |
 |
Ornidazole Impurity 24 |
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 |
Olanzapine impurity ANB |
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 |
Pitavastatin Impurity 75 |
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 |
Febuxostat Impurity 100 |
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 |
Febuxostat Impurity 101 |
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 |
Febuxostat Impurity 105 |
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![(S)-10-amino-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid](/) |
(S)-10-amino-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid |
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 |
Ticagrelor Impurity 129 |
1381841-36-6 |
C15H19NO3 |
 |
Benzoic acid, 2-hydroxy-3-(2-phenyldiazenyl)- |
136819-59-5 |
C13H10N2O3 |
![5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2Z)-(2-amino-4-thiazolyl)(methoxyimino)acetyl]amino]-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-, 5-oxide, (6R,7R)- (9CI)](/CAS/20200611/GIF/97466-28-9.gif) |
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2Z)-(2-amino-4-thiazolyl)(methoxyimino)acetyl]amino]-8-oxo-3-[[(1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio]methyl]-, 5-oxide, (6R,7R)- (9CI) |
97466-28-9 |
C18H18N8O8S3 |
![1,3-Benzenediamine, 4-methyl-N3-[4-methyl-6-(3-pyridinyl)-2-pyrimidinyl]-](/CAS/20200611/GIF/1032314-73-0.gif) |
1,3-Benzenediamine, 4-methyl-N3-[4-methyl-6-(3-pyridinyl)-2-pyrimidinyl]- |
1032314-73-0 |
C17H17N5 |
![5-methoxy-1-methyl-1H-benzo[d]imidazole-2-sulfonic acid](/) |
5-methoxy-1-methyl-1H-benzo[d]imidazole-2-sulfonic acid |
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 |
Teneligliptin Impurity 17 |
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 |
1(3H)-Isobenzofuranone, 3-(1-methylpropyl)- |
261783-87-3 |
C12H14O2 |
![Carbamic acid, N-[(1R)-2-[5-(2-fluoro-3-hydroxyphenyl)-3-[[2-fluoro-6-(trifluoromethyl)phenyl]methyl]-3,6-dihydro-4-methyl-2,6-dioxo-1(2H)-pyrimidinyl]-1-phenylethyl]-, 1,1-dimethylethyl ester](/CAS/20210111/GIF/1062642-68-5.gif) |
Carbamic acid, N-[(1R)-2-[5-(2-fluoro-3-hydroxyphenyl)-3-[[2-fluoro-6-(trifluoromethyl)phenyl]methyl]-3,6-dihydro-4-methyl-2,6-dioxo-1(2H)-pyrimidinyl]-1-phenylethyl]-, 1,1-dimethylethyl ester |
1062642-68-5 |
C32H30F5N3O5 |
 |
2-Oxazolidinone, 5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-, (5S)- |
2514942-86-8 |
C13H15NO4 |
![6-Heptenoic acid, 7-[4-(4-fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amino]-5-pyrimidinyl]-5-hydroxy-3-oxo-, (5S,6E)-](/CAS/20200611/GIF/1803023-43-9.gif) |
6-Heptenoic acid, 7-[4-(4-fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amino]-5-pyrimidinyl]-5-hydroxy-3-oxo-, (5S,6E)- |
1803023-43-9 |
C22H26FN3O6S |
 |
Drug impurity detection and analysis |
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![1-Pyrrolidinecarboxamide, N-[5-[(2S)-2-(2,5-difluorophenyl)-1-pyrrolidinyl]pyrazolo[1,5-a]pyrimidin-3-yl]-3-hydroxy-, (3R)-](/CAS/20210111/GIF/2409590-08-3.gif) |
1-Pyrrolidinecarboxamide, N-[5-[(2S)-2-(2,5-difluorophenyl)-1-pyrrolidinyl]pyrazolo[1,5-a]pyrimidin-3-yl]-3-hydroxy-, (3R)- |
2409590-08-3 |
C21H22F2N6O2 |
 |
Sertraline Impurity 20 |
1498236-91-1 |
C16H14Cl2O |
 |
Budesonide Impurity 21 |
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 |
2H-3-Benzazepin-2-one, 3-(3-bromopropyl)-1,3,4,5-tetrahydro-7,8-dimethoxy- |
1192174-72-3 |
C15H20BrNO3 |
 |
1-Cyclohexene-1-carboxylic acid, 4-(acetylamino)-3-(1-ethylpropoxy)-5-nitro-, ethyl ester, (3R,4R,5S)- |
949164-64-1 |
C16H26N2O6 |
 |
Peramivir Impurity 55 |
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 |
Peramivir Impurity 60 |
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 |
Hexanoic acid, 3-(hydroxymethyl)-, methyl ester, (3R)- |
2408196-94-9 |
C8H16O3 |
 |
Loratadine EP Impurity L |
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 |
Pregna-1,4-dien-3-one, 21-(acetyloxy)-11,17,20-trihydroxy-6-methyl-, (6α,11β)- (9CI) |
151003-82-6 |
C24H34O6 |
 |
3-(4-TRIFLUOROMETHYL-PHENYL)-PROPAN-1-OL |
180635-74-9 |
C10H11F3O |
 |
(1R,2R)-2-(3-((5-acetoxypentyl)oxy)-3-oxopropyl)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium |
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 |
(E)-2-CYANO-5-METHYL-HEX-2-ENOIC ACID METHYL ESTER |
96914-67-9 |
C9H13NO2 |
 |
Nicergoline Impurity 7 |
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 |
N,N'-Bis(2-Hydroxyethyl)propane-1,3-diamine |
10563-27-6 |
C7H18N2O2 |
 |
4-((3-hydroxy-1H-indazol-5-yl)methyl)phthalazin-1(2H)-one |
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![2-oxo-2-((6S,8S,9S,10R,13S,14S,17S)-6,10,13-trimethyl-3,11-dioxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)ethyl acetate](/) |
2-oxo-2-((6S,8S,9S,10R,13S,14S,17S)-6,10,13-trimethyl-3,11-dioxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)ethyl acetate |
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 |
Tirofiban Impurity 79 |
158808-85-6 |
C21H34N2O5S |
 |
Brivaracetam Impurity 47 |
2755924-55-9 |
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 |
4-((3-amino-1-(2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoyl)-1H-indazol-5-yl)methyl)phthalazin-1(2H)-one |
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![(Z)-[cyano(2,3-dichlorophenyl)methylene]carbazamidine](/CAS/GIF/94213-23-7.gif) |
(Z)-[cyano(2,3-dichlorophenyl)methylene]carbazamidine |
94213-23-7 |
C9H7Cl2N5 |
 |
Perampanel Impurity ABCDEFGHJKL |
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 |
Ethyl-3-acetoxy-2-butenoat |
29214-62-8 |
C8H12O4 |
 |
2-(Brommethyl)-2-(2,4-dichlorphenyl)-1,3-dioxolan-4-methanol |
68751-57-5 |
C11H11BrCl2O3 |
 |
INDEX NAME NOT YET ASSIGNED |
2511244-96-3 |
C27H36N2O6 |
 |
Oseltamivir Impurity 91 |
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 |
Oseltamivir Impurity 80 |
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 |
Oseltamivir Impurity 72 |
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 |
4(1H)-Quinazolinone, 6,8-dibromo-3-cyclohexyl-2,3-dihydro- |
2512203-87-9 |
C14H16Br2N2O |
 |
Linagliptin impurity KH-3 |
2279114-27-9 |
C30H37N7O6 |
 |
11β,21-Dihydroxypregna-1,4,16-trien-3,20-dion-21-acetat |
3044-42-6 |
C23H28O5 |
![3-[3-(tert-Butylamino)-2-hydroxypropoxy]-4-morpholino-1,2,5-thiadiazolmonomaleat](/CAS/GIF/57073-55-9.gif) |
3-[3-(tert-Butylamino)-2-hydroxypropoxy]-4-morpholino-1,2,5-thiadiazolmonomaleat |
57073-55-9 |
C17H28N4O7S |
 |
Ampicillin Impurity U |
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 |
Canagliflozin Hydroperoxide Impurity |
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 |
(E)-2-hydroxy-4-(phenyldiazenyl)benzoic acid |
40038-46-8 |
C13H10N2O3 |
 |
Sitagliptin EP Impurity 6 |
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 |
Vonoprazan-005 |
2514735-09-0 |
C33H27F3N4 |
 |
D-erythro-Hexonic acid, 6-S-2-benzothiazolyl-2,4-dideoxy-6-thio-, 1,1-dimethylethyl ester |
1469771-46-7 |
C17H23NO4S2 |
![(1R,2R,4S,5S,7s,9R)-9-butyl-7-(((S)-3-hydroxy-2-phenylpropanoyl)oxy)-9-methyl-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-9-ium bromide](/) |
(1R,2R,4S,5S,7s,9R)-9-butyl-7-(((S)-3-hydroxy-2-phenylpropanoyl)oxy)-9-methyl-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-9-ium bromide |
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 |
1-Demethyl Hydroxy Daunomycinone |
58199-98-7 |
C20H16O9 |
 |
(S)-2-(butylsulfonamido)-3-(4-(4-(1-methylpiperidin-4-yl)butoxy)phenyl)propanoic acid |
1631053-75-2 |
C23H38N2O5S |
 |
FEXOFENADINE EP IMPURITY A - HCl |
153439-43-1 |
C32H38ClNO4 |
![2-[(4-Chloro-3-Methyl-2-Pyridinyl-methyl)thio]-1H-Benzimidazole](/CAS/GIF/103312-62-5.gif) |
2-[(4-Chloro-3-Methyl-2-Pyridinyl-methyl)thio]-1H-Benzimidazole |
103312-62-5 |
C14H12ClN3S |
 |
Pazufloxacin |
127046-18-8 |
C18H19FN2O4 |
 |
Vinpocetine |
80038-06-8 |
C22H26N2O2 |
 |
7-(but-2-yn-1-yl)-8-(3-(hydroxyimino)piperidin-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione |
1297273-94-9 |
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