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Structure Chemical Name CAS MF
(E)-8-(3,4-dihydroxystyryl) (E)-8-(3,4-dihydroxystyryl)
N,N'-((2Z,2'Z)-disulfanediylbis N,N'-((2Z,2'Z)-disulfanediylbis
Cabozantinib impurity 1DYH Cabozantinib impurity 1DYH 1621681-63-7 C28H24FN3O6
1-((2R,3R)-3-(2,3-dihydrobenzo[b] 1-((2R,3R)-3-(2,3-dihydrobenzo[b] 2137145-62-9 C23H36N2O5
Tiotropium Bromide Impurity 1 Tiotropium Bromide Impurity 1 2109037-83-2 C18H20ClNO4S2
Dofetilide Impurity A Dofetilide Impurity A
Dexmedetomidine Impurity 19 Dexmedetomidine Impurity 19
Voriconazole Impurity 18 Voriconazole Impurity 18 321588-94-7 C22H18ClF4N7O
Remdesivir impurity Remdesivir impurity 1911578-74-9 C12H14N5O7P
Peramivir Impurity 16 Peramivir Impurity 16
Tiotropium bromide Impurity 13 Tiotropium bromide Impurity 13 1459721-06-2 C18H19NO4S2
Rocuronium bromide diepoxide impurity Rocuronium bromide diepoxide impurity C21H30O4
2-hydroxy-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzonitrile 2-hydroxy-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzonitrile
Topiroxostat Impurity 39 Topiroxostat Impurity 39
Vonoprazan Impurity 60 Vonoprazan Impurity 60
PREDNICARBATE IMPURITY F PREDNICARBATE IMPURITY F
2-Propanol, 1,1'-[methylenebis(4,1-phenyleneoxy)]bis[3-[(1-methylethyl)amino]- 2-Propanol, 1,1'-[methylenebis(4,1-phenyleneoxy)]bis[3-[(1-methylethyl)amino]- 1225195-70-9 C25H38N2O4
INDEX NAME NOT YET ASSIGNED INDEX NAME NOT YET ASSIGNED 2031272-32-7 C47H40N4O4
(4R,5S,6S)-3-[[(3S,5S)-1-[(4-Aminophenyl)methyl]-5-[[(3-carboxyphenyl)amino]carbonyl]-3-pyrrolidinyl]thio]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid Sodium Salt (4R,5S,6S)-3-[[(3S,5S)-1-[(4-Aminophenyl)methyl]-5-[[(3-carboxyphenyl)amino]carbonyl]-3-pyrrolidinyl]thio]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid Sodium Salt 866186-66-5 C29H33N4NaO7S
(R)-cis-5ξ-Methyl Atracurium Dibesylate (R)-cis-5ξ-Methyl Atracurium Dibesylate 1193104-82-3 C60H79N2O15S+
4,4'-Dihydroxyazoxybenzene 4,4'-Dihydroxyazoxybenzene 15596-57-3 C12H10N2O3
5-[[(2-Aminoethyl)thio]methyl]-N,N-dimethyl-2-furfurylamin 5-[[(2-Aminoethyl)thio]methyl]-N,N-dimethyl-2-furfurylamin 66356-53-4 C10H18N2OS
2-[2-(2-METHOXY-PHENOXY)-ETHYL]-ISOINDOLE-1,3-DIONE 2-[2-(2-METHOXY-PHENOXY)-ETHYL]-ISOINDOLE-1,3-DIONE 26646-63-9 C17H15NO4
(3AS,7AS)-HEXAHYDRO-1H-ISOINDOLE-1,3(2H)-DIONE (3AS,7AS)-HEXAHYDRO-1H-ISOINDOLE-1,3(2H)-DIONE 117307-09-2 C8H11NO2
Amifostine Thiol Dihydrochloride Amifostine Thiol Dihydrochloride 14653-77-1 C5H14N2S
Butyl Itraconazole Butyl Itraconazole 89848-51-1 C35H38Cl2N8O4
Betamethasone 9,11-Epoxide Propionate Betamethasone 9,11-Epoxide Propionate 205105-83-5 C25H32O6
8-Methoxyquinolin-2(1H)-one 8-Methoxyquinolin-2(1H)-one 22614-69-3 C10H9NO2
7-Bromo Epinastine 7-Bromo Epinastine 1217052-16-8 C16H14BrN3
1,3-Bis[4-(2-methoxyethyl)phenoxy]- 1,3-Bis[4-(2-methoxyethyl)phenoxy]- 230975-30-1 C21H28O5
5-Deshydroxymethyl-5-chloro Losartan  (Losartan Impurity K) 5-Deshydroxymethyl-5-chloro Losartan (Losartan Impurity K) 1159977-26-0 C21H20Cl2N6
Desfluoro Fluvoxamine Desfluoro Fluvoxamine 1217214-94-2 C15H22F2N2O2
Nilotinib N-Oxide Nilotinib N-Oxide 1246817-85-5 C28H22F3N7O2
Bis[(2-guanidino-4-thiazolyl)methyl]disulfide Bis[(2-guanidino-4-thiazolyl)methyl]disulfide 129083-44-9 C10H14N8S4
3-AMino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone 3-AMino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone 55198-89-5 C15H10ClN3O3
3-Dehydroxy-3-oxo-4,5-dihydro OxazepaM 3-Dehydroxy-3-oxo-4,5-dihydro OxazepaM 19554-95-1 C15H11ClN2O2
8-DeMethyl Ivabradine 8-DeMethyl Ivabradine 304464-97-9 C26H34N2O5
CitalopraM DiMethylaMinobutanone CitalopraM DiMethylaMinobutanone 1329745-98-3 C25H33FN2O2
[[4-[(3-Methylphenyl)aMino]-3-pyridinyl]sulfonyl]carbaMic Acid Ethyl Ester [[4-[(3-Methylphenyl)aMino]-3-pyridinyl]sulfonyl]carbaMic Acid Ethyl Ester 72810-57-2 C15H17N3O4S
12-Hydroxy Irinotecan 12-Hydroxy Irinotecan 185336-12-3 C33H38N4O7
Losartan IsoMer  IMpurity, PotassiuM Salt Losartan IsoMer IMpurity, PotassiuM Salt 860644-28-6 C22H22ClKN6O
PidotiMod Diketopiperazine-6-propanoic Acid PidotiMod Diketopiperazine-6-propanoic Acid 161771-75-1 C9H12N2O4S
RofluMilast N-Oxide RofluMilast N-Oxide 292135-78-5 C17H14Cl2F2N2O4
EsMolol Acid SodiuM Salt EsMolol Acid SodiuM Salt 83356-60-9 C15H22NNaO4
Thyroxine Ethyl Ester Thyroxine Ethyl Ester 76353-71-4 C17H15I4NO4
(4-Chlorophenyl)[4-(1-Methylethoxy)phenyl]Methanone (Fenofibrate IMpurity) (4-Chlorophenyl)[4-(1-Methylethoxy)phenyl]Methanone (Fenofibrate IMpurity) 154356-96-4 C16H15ClO2
5-Acetyl Rhein 5-Acetyl Rhein 875535-35-6 C17H10O7
7'-Methyl-2'-propyl-1H,3'H-2,5'-bibenzo[d]iMidazole 7'-Methyl-2'-propyl-1H,3'H-2,5'-bibenzo[d]iMidazole 884330-09-0 C18H18N4
5-Des[2-(tert-butylaMino)] BaMbuterol-5-ethanol 5-Des[2-(tert-butylaMino)] BaMbuterol-5-ethanol 112935-93-0 C14H20N2O5
Deoxy Fesoterodine Deoxy Fesoterodine 895137-81-2 C26H37NO2
Bisacodyl Related Compound C (20 mg) (4-[(4-Hydroxyphenyl)(pyridin-2-yl)methyl]phenyl acetate) Bisacodyl Related Compound C (20 mg) (4-[(4-Hydroxyphenyl)(pyridin-2-yl)methyl]phenyl acetate) 72901-16-7 C20H17NO3
(6R,7R)-7-((Z)-2-(2-aMinothiazol-4-yl)-2-(hydroxyiMino)acetaMido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 5-oxide (6R,7R)-7-((Z)-2-(2-aMinothiazol-4-yl)-2-(hydroxyiMino)acetaMido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 5-oxide 934986-48-8 C14H13N5O6S2
Isatin indicator solution Isatin indicator solution C8H5NO2
2(1H)-Pyridinone, 1,1'-[(1E)-1,2-diazenediyldi-4,1-phenylene]bis[5,6-dihydro-3-(4-morpholinyl)- 2(1H)-Pyridinone, 1,1'-[(1E)-1,2-diazenediyldi-4,1-phenylene]bis[5,6-dihydro-3-(4-morpholinyl)- 1998079-15-4 C30H34N6O4
Avatrombopag Impurity 64 Avatrombopag Impurity 64
1,2-Benzenedicarboxylicacid,3-amino-,1-ethylester(9CI) 1,2-Benzenedicarboxylicacid,3-amino-,1-ethylester(9CI) 208774-55-4 C10H11NO4
1-(2,3-dichlorophenyl)-4-(4-hydroxybutyl)piperazine 1-(2,3-dichlorophenyl)-4-(4-hydroxybutyl)piperazine 870765-38-1 C14H20Cl2N2O
IMp. H (EP): (2R)-2-[(2,2-DiMethylpropanoyl)aMino]-2-(4-hydroxyphenyl)acetic Acid IMp. H (EP): (2R)-2-[(2,2-DiMethylpropanoyl)aMino]-2-(4-hydroxyphenyl)acetic Acid C16H19N3O5S
N-(2-(7-methoxy-1,2,3,4-tetrahydronaphthalen-1-yl)ethyl)acetamide N-(2-(7-methoxy-1,2,3,4-tetrahydronaphthalen-1-yl)ethyl)acetamide 178677-49-1 C15H21NO2
Apixaban Impurity 24 Apixaban Impurity 24 2264018-89-3 C25H26N4O6
AMOXICILLIN TRIHYDRATE IMP. E (EP): (2RS,4S)-2-[[[(2R)-2-AMINO-2-(4-HYDROXYPHENYL)ACETYL]AMINO]METHYL]-5,5-DIMETHYLTHIAZOLIDINE-4-CARBOXYLIC ACID (PENILLOIC ACIDS OF AMOXICILLIN) AMOXICILLIN TRIHYDRATE IMP. E (EP): (2RS,4S)-2-[[[(2R)-2-AMINO-2-(4-HYDROXYPHENYL)ACETYL]AMINO]METHYL]-5,5-DIMETHYLTHIAZOLIDINE-4-CARBOXYLIC ACID (PENILLOIC ACIDS OF AMOXICILLIN)
Benzoic acid, 4-[7-[6-cyano-5-(trifluoromethyl)-3-pyridinyl]-8-oxo-6-thioxo-5,7-diazaspiro[3.4]oct-5-yl]-2-fluoro-, methyl ester Benzoic acid, 4-[7-[6-cyano-5-(trifluoromethyl)-3-pyridinyl]-8-oxo-6-thioxo-5,7-diazaspiro[3.4]oct-5-yl]-2-fluoro-, methyl ester 1950587-19-5 C21H14F4N4O3S
Amoxicillin EP Impurity Q Amoxicillin EP Impurity Q
Acetonitrile, (3,4-dihydro-7-methoxy-1(2H)-naphthalenylidene)-, (Z)- (9CI) Acetonitrile, (3,4-dihydro-7-methoxy-1(2H)-naphthalenylidene)-, (Z)- (9CI) 178676-66-9 C13H13NO
(E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine (E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine 1371535-54-4 C13H17NO
L-Cefadroxil Oxide Impurity L-Cefadroxil Oxide Impurity
Ethanone, 2-bromo-1-(5-bromo-4-chloro-2-thienyl)- Ethanone, 2-bromo-1-(5-bromo-4-chloro-2-thienyl)- 1519427-10-1 C6H3Br2ClOS
Alvatrombopag Impurity 84 Alvatrombopag Impurity 84
2-Amino-4-(3-chlorothien-2-yl)-1,3-thiazole 2-Amino-4-(3-chlorothien-2-yl)-1,3-thiazole 339114-12-4 C7H5ClN2S2
Aripiprazole Related CoMpound B Aripiprazole Related CoMpound B 1424858-02-5 C26H32N2O5
AMoxicillin iMpurity J AMoxicillin iMpurity J 2088960-43-2 C32H38N6O10S2
Benzamide, 4-[7-[6-cyano-5-(trifluoromethyl)-3-pyridinyl]-6,8-dithioxo-5,7-diazaspiro[3.4]oct-5-yl]-2-fluoro-N-methyl- Benzamide, 4-[7-[6-cyano-5-(trifluoromethyl)-3-pyridinyl]-6,8-dithioxo-5,7-diazaspiro[3.4]oct-5-yl]-2-fluoro-N-methyl- 2649802-40-2 C21H15F4N5OS2
8-(2,3-dichlorophenyl)-5,8-diazaspiro[4.5]decan-5-ium bromide 8-(2,3-dichlorophenyl)-5,8-diazaspiro[4.5]decan-5-ium bromide 2043655-58-7 C14H19Cl3N2
N-nitroso-N-methylcyclohexylamine N-nitroso-N-methylcyclohexylamine 5432-28-0 C7H14N2O
Aripiprazole N4-Oxide Aripiprazole N4-Oxide 573691-11-9 C23H27Cl2N3O3
IMp. F (EP): 3-(4-Hydroxyphenyl)pyrazin-2-ol IMp. F (EP): 3-(4-Hydroxyphenyl)pyrazin-2-ol
Avatrombopag Impurity 55 Avatrombopag Impurity 55 1039808-70-2 C14H16Cl2N2O3
Benzonitrile, 2-[[4-[(3R)-3-amino-1-piperidinyl]-3,6-dihydro-2,6-dioxo-1(2H)-pyrimidinyl]methyl]- Benzonitrile, 2-[[4-[(3R)-3-amino-1-piperidinyl]-3,6-dihydro-2,6-dioxo-1(2H)-pyrimidinyl]methyl]- 1634664-96-2 C17H19N5O2
2-(7-Methoxy-3,4-dihydronaphthalen-1-yl)acetic acid 2-(7-Methoxy-3,4-dihydronaphthalen-1-yl)acetic acid 27533-69-3 C13H14O3
Amoxicillin Impurity U(EP) Amoxicillin Impurity U(EP)
Benzonitrile, 2-[(4-chloro-3,6-dihydro-2,6-dioxo-1(2H)-pyrimidinyl)methyl]- Benzonitrile, 2-[(4-chloro-3,6-dihydro-2,6-dioxo-1(2H)-pyrimidinyl)methyl]- 2749357-07-9 C12H8ClN3O2
(D-LYS16)-ACTH (1-24) (HUMAN, BOVINE, MOUSE, OVINE, PORCINE, RABBIT, RAT) (D-LYS16)-ACTH (1-24) (HUMAN, BOVINE, MOUSE, OVINE, PORCINE, RABBIT, RAT) 494750-52-6 C136H210N40O31S
N-[2-[1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl]acetamide N-[2-[1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl]acetamide 253168-86-4 C22H24N2O7S
Alogliptin Impurity 27 Alogliptin Impurity 27
Amoxicillin Impurity N(EP) Amoxicillin Impurity N(EP)
Apremilast Impurity 84 Apremilast Impurity 84 2096492-43-0 C22H24N2O8S
Avatrombopag Impurity 65 Avatrombopag Impurity 65
Apremilast Impurity 46 Apremilast Impurity 46
AMoxicillin IMpurity G AMoxicillin IMpurity G C16H19N3O5S
O-DesmethylApixabanSulphateNa O-DesmethylApixabanSulphateNa 1118765-14-2 C24H23N5O7S
4-Chloro-2-fluoro-N-methylbenzamide 4-Chloro-2-fluoro-N-methylbenzamide 1343038-33-4 C8H7ClFNO
1-Chlor-3-(chlorphenylmethyl)benzol 1-Chlor-3-(chlorphenylmethyl)benzol 13391-39-4 C13H10Cl2
2-Pyridinecarbonitrile, 5-isocyanato-3-(trifluoromethyl)- 2-Pyridinecarbonitrile, 5-isocyanato-3-(trifluoromethyl)- 1950587-21-9 C8H2F3N3O
Ethanol, 2-[[2-amino-2-(3-ethoxy-4-methoxyphenyl)ethyl]sulfonyl]- Ethanol, 2-[[2-amino-2-(3-ethoxy-4-methoxyphenyl)ethyl]sulfonyl]- 2733250-84-3 C13H21NO5S
1,2-Benzenedicarboxylic acid, 3-amino-, 2-ethyl ester 1,2-Benzenedicarboxylic acid, 3-amino-, 2-ethyl ester 1822756-03-5 C10H11NO4
Alogliptin Impurity 26 Alogliptin Impurity 26
(E)-(3,4-Dihydro-7-methoxy-1(2H)-naphthalenylidene)acetonitrile (E)-(3,4-Dihydro-7-methoxy-1(2H)-naphthalenylidene)acetonitrile 178676-65-8 C13H13NO
Amoxicillin USP Impurity M Amoxicillin USP Impurity M
1,?4-?Piperazinediacetamid?e, N1,?N4-?dimethyl-?N1,?N4-?bis(4-?nitrophenyl)?- 1,?4-?Piperazinediacetamid?e, N1,?N4-?dimethyl-?N1,?N4-?bis(4-?nitrophenyl)?- 2410649-54-4 C22H26N6O6
Apixaban Impurity 20 Apixaban Impurity 20
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