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Structure Chemical Name CAS MF
Linagliptin Impurity I Linagliptin Impurity I
1H-Pyrrole-3-carbonitrile,5-(2-fluorophenyl)-1-(3-pyridinylsulfonyl)- 1H-Pyrrole-3-carbonitrile,5-(2-fluorophenyl)-1-(3-pyridinylsulfonyl)- 1807642-39-2 C16H10FN3O2S
4-amino-1-[(2RS)-2-(2,4-difluorophenyl)-2-hydroxy-3(1H- 1,2,4-triazol-1-yl)propyl]-4H-1,2,4-triazolium 4-amino-1-[(2RS)-2-(2,4-difluorophenyl)-2-hydroxy-3(1H- 1,2,4-triazol-1-yl)propyl]-4H-1,2,4-triazolium 749821-19-0 C13H14F2N7O+
Canagliflozin Defluoro Impurity Canagliflozin Defluoro Impurity
Dapagliflozin Impurity 6 Dapagliflozin Impurity 6
Imatinib Impurity 7 Imatinib Impurity 7 581076-64-4 C8H12N4
Nilotinib Impurity 1 Nilotinib Impurity 1 641571-05-3 C28H22F3N7O
Riociguat Impurtiy 1 Riociguat Impurtiy 1
Riociguat Impurtiy 6 Riociguat Impurtiy 6 1702271-98-4 C18H17FN8
Brimonidine Impurity E Brimonidine Impurity E 168329-48-4 C9H8BrN5
Dapagliflozin Impurity G Dapagliflozin Impurity G
Dapoxetine Impurity B Dapoxetine Impurity B
Fesoterodine Diol Dimer Fesoterodine Diol Dimer 1428856-45-4 C44H60N2O3
Gimeracil Impurity Gimeracil Impurity 17902-24-8 C8H9ClN2O3
Pramipexole Impurity H Pramipexole Impurity H
Rivaroxaban Impurity H Rivaroxaban Impurity H 1807455-76-0 C25H24Cl2N4O6S2
Vonoprazan impurity A Vonoprazan impurity A
5-ethyl 3-isopropyl 2-((2-aminoethoxy)methyl)-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate 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 Ibrutinib impurity D
Mupirocin impurity A Mupirocin impurity A C26H44O9
FG-4592 intermediate7 FG-4592 intermediate7 1509958-19-3 C20H20N2O4
Milnacipran Impurity 13 Milnacipran Impurity 13 710339-49-4 C12H16NO+
Urapidil Impurity A Urapidil Impurity A
Tofacitinib Impurity I Tofacitinib Impurity I
N-(3-chloro-4-fluorophenyl)-6 ,7-dimethoxyquinazolin-4-amine N-(3-chloro-4-fluorophenyl)-6 ,7-dimethoxyquinazolin-4-amine 153437-78-6 C16H13ClFN3O2
Itopride Impurity C Itopride Impurity C 141996-97-6 C19H24N2O4
Mirabegron Impurity Mirabegron Impurity 1796931-48-0 C21H24N4O2S
FAMOTIDINE RELATED COMPOUND B FAMOTIDINE RELATED COMPOUND B 89268-62-2 C16H23N11O2S5
TIZOXANIDE GLUCURONIDE, SODIUM SALT TIZOXANIDE GLUCURONIDE, SODIUM SALT 221287-83-8 C16H14N3NaO10S
Sugammadex sodium Impurity 50 Sugammadex sodium Impurity 50
Cabozantinib impurity 39 Cabozantinib impurity 39
Cabozantinib impurity 53 Cabozantinib impurity 53
1-(2-chloro-2-(2,4-difluorophenyl)ethyl)-1H-1,2,4-triazole 1-(2-chloro-2-(2,4-difluorophenyl)ethyl)-1H-1,2,4-triazole 206050-24-0 C10H8ClF2N3
methyl 1-phenylethanesulfonate methyl 1-phenylethanesulfonate 883835-57-2 C9H12O3S
Doxofylline Impurity 22 Doxofylline Impurity 22
Dapoxetine impurity 61 Dapoxetine impurity 61
Dapoxetine impurity 55 Dapoxetine impurity 55
1-METHYLBIGUANIDE SULPHATE 1-METHYLBIGUANIDE SULPHATE 1609-00-3 C3H9N5
1-(3,5-DIHYDROXYPHENYL)-2-[(1,1-DIMETHYLETHYL)AMINO]-ETHANONE, HYDROCHLORIDE 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 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 Oxacillin Impurity H
(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 (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
PeraMpanel PeraMpanel 380918-54-7 C23H15N3O
Empagliflozin Impurity 79 Empagliflozin Impurity 79
Empagliflozin Impurity 89 Empagliflozin Impurity 89 2452301-32-3 C23H25ClO7
Levocarnitine Impurity F Levocarnitine Impurity F 6490-19-3 C7H17ClN2O2
4,4-dimethyl-2-(2-phenylpropan-2-yl)oxazo‐ line 4,4-dimethyl-2-(2-phenylpropan-2-yl)oxazo‐ line 874895-87-1 C14H19NO
Formoterol Impurity 4 Formoterol Impurity 4
Roxadustat-001 Roxadustat-001 319-57-3 C8H5BF4N2O2
Ornidazole Impurity 24 Ornidazole Impurity 24
Olanzapine impurity ANB Olanzapine impurity ANB
Pitavastatin Impurity 75 Pitavastatin Impurity 75
Febuxostat Impurity 100 Febuxostat Impurity 100
Febuxostat Impurity 101 Febuxostat Impurity 101
Febuxostat Impurity 105 Febuxostat Impurity 105
(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
Ticagrelor Impurity 129 Ticagrelor Impurity 129 1381841-36-6 C15H19NO3
Benzoic acid, 2-hydroxy-3-(2-phenyldiazenyl)- 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) 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]- 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
Teneligliptin Impurity 17 Teneligliptin Impurity 17
1(3H)-Isobenzofuranone, 3-(1-methylpropyl)- 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 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)- 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)- 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 Drug impurity detection and analysis
1-Pyrrolidinecarboxamide, N-[5-[(2S)-2-(2,5-difluorophenyl)-1-pyrrolidinyl]pyrazolo[1,5-a]pyrimidin-3-yl]-3-hydroxy-, (3R)- 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 Sertraline Impurity 20 1498236-91-1 C16H14Cl2O
Budesonide Impurity 21 Budesonide Impurity 21
2H-3-Benzazepin-2-one, 3-(3-bromopropyl)-1,3,4,5-tetrahydro-7,8-dimethoxy- 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)- 1-Cyclohexene-1-carboxylic acid, 4-(acetylamino)-3-(1-ethylpropoxy)-5-nitro-, ethyl ester, (3R,4R,5S)- 949164-64-1 C16H26N2O6
Peramivir Impurity 55 Peramivir Impurity 55
Peramivir Impurity 60 Peramivir Impurity 60
Hexanoic acid, 3-(hydroxymethyl)-, methyl ester, (3R)- Hexanoic acid, 3-(hydroxymethyl)-, methyl ester, (3R)- 2408196-94-9 C8H16O3
Loratadine EP Impurity L Loratadine EP Impurity L
Pregna-1,4-dien-3-one, 21-(acetyloxy)-11,17,20-trihydroxy-6-methyl-, (6α,11β)- (9CI) 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 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 (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
(E)-2-CYANO-5-METHYL-HEX-2-ENOIC ACID METHYL ESTER (E)-2-CYANO-5-METHYL-HEX-2-ENOIC ACID METHYL ESTER 96914-67-9 C9H13NO2
Nicergoline Impurity 7 Nicergoline Impurity 7
N,N'-Bis(2-Hydroxyethyl)propane-1,3-diamine 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 4-((3-hydroxy-1H-indazol-5-yl)methyl)phthalazin-1(2H)-one
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
Tirofiban Impurity 79 Tirofiban Impurity 79 158808-85-6 C21H34N2O5S
Brivaracetam Impurity 47 Brivaracetam Impurity 47 2755924-55-9
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 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
(Z)-[cyano(2,3-dichlorophenyl)methylene]carbazamidine (Z)-[cyano(2,3-dichlorophenyl)methylene]carbazamidine 94213-23-7 C9H7Cl2N5
Perampanel Impurity ABCDEFGHJKL Perampanel Impurity ABCDEFGHJKL
Ethyl-3-acetoxy-2-butenoat Ethyl-3-acetoxy-2-butenoat 29214-62-8 C8H12O4
2-(Brommethyl)-2-(2,4-dichlorphenyl)-1,3-dioxolan-4-methanol 2-(Brommethyl)-2-(2,4-dichlorphenyl)-1,3-dioxolan-4-methanol 68751-57-5 C11H11BrCl2O3
INDEX NAME NOT YET ASSIGNED INDEX NAME NOT YET ASSIGNED 2511244-96-3 C27H36N2O6
Oseltamivir Impurity 91 Oseltamivir Impurity 91
Oseltamivir Impurity 80 Oseltamivir Impurity 80
Oseltamivir Impurity 72 Oseltamivir Impurity 72
4(1H)-Quinazolinone, 6,8-dibromo-3-cyclohexyl-2,3-dihydro- 4(1H)-Quinazolinone, 6,8-dibromo-3-cyclohexyl-2,3-dihydro- 2512203-87-9 C14H16Br2N2O
Linagliptin impurity KH-3 Linagliptin impurity KH-3 2279114-27-9 C30H37N7O6
11β,21-Dihydroxypregna-1,4,16-trien-3,20-dion-21-acetat 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 3-[3-(tert-Butylamino)-2-hydroxypropoxy]-4-morpholino-1,2,5-thiadiazolmonomaleat 57073-55-9 C17H28N4O7S
Ampicillin Impurity U Ampicillin Impurity U
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