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Structure Chemical Name CAS MF
Vonoprazan Impurity 57 Vonoprazan Impurity 57
Tafluprost Impurity 9 Tafluprost Impurity 9 2099033-66-4 C27H41NO8
2H-3-Benzazepin-2-one, 3-[3-[[[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl]methylamino]propyl]-1,3,4,5-tetrahydro-5-hydroxy-7,8-dimethoxy- 2H-3-Benzazepin-2-one, 3-[3-[[[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl]methylamino]propyl]-1,3,4,5-tetrahydro-5-hydroxy-7,8-dimethoxy- 2253977-80-7 C27H36N2O6
Benzeneacetic acid, 3-[1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]butyl]-α,α-dimethyl-, methyl ester Benzeneacetic acid, 3-[1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]butyl]-α,α-dimethyl-, methyl ester 1187954-56-8 C33H41NO4
N-[2-(methylthio)ethyl]-2-[(3,3,3-trifluoropropyl)thio]-Adenosine 5''-(hydrogen P-1H-imidazol-1-ylphosphonate) N-[2-(methylthio)ethyl]-2-[(3,3,3-trifluoropropyl)thio]-Adenosine 5''-(hydrogen P-1H-imidazol-1-ylphosphonate) 1054332-15-8 C19H25F3N7O6PS2
N-[5-(4-Bromophenyl)-6-[2-(2-pyrimidinyloxy)ethoxy]-4-pyrimidinyl]-N''-propyl-sulfamide N-[5-(4-Bromophenyl)-6-[2-(2-pyrimidinyloxy)ethoxy]-4-pyrimidinyl]-N''-propyl-sulfamide 2211059-00-4 C19H21BrN6O4S
Isomer 1 of Tazobactam Impurity 3 Isomer 1 of Tazobactam Impurity 3
Ceftiofur USP Impurity I Ceftiofur USP Impurity I
Cephalexin Degradation Impurity A Cephalexin Degradation Impurity A
Pregabalin-8687（mixture of 4 isomers） Pregabalin-8687（mixture of 4 isomers）
7-(2-chloropropanoyl)-5H-chromeno[2,3-b]pyridin-5-one 7-(2-chloropropanoyl)-5H-chromeno[2,3-b]pyridin-5-one
1-(5H-chromeno[2,3-b]pyridin-7-yl)-2-methoxypropan-1-one 1-(5H-chromeno[2,3-b]pyridin-7-yl)-2-methoxypropan-1-one
Dolutegravir Impurity C Dolutegravir Impurity C 1802141-49-6 C22H23F2N3O5
Dapoxetine Impurity 68 Dapoxetine Impurity 68 119357-48-1 C19H18O
Tobramycin Impurity Tobramycin Impurity 74501-86-3 C18H35N5O8
Peramivir Impurity 24 Peramivir Impurity 24
2-CHLORO-6-AMINO-9-(2',3',5'-TRI-O-ACETYL--D-RIBOFURANOSYL)PURINE 2-CHLORO-6-AMINO-9-(2',3',5'-TRI-O-ACETYL--D-RIBOFURANOSYL)PURINE 79999-39-6 C16H18ClN5O7
Sugammadex sodium Impurity 46 Sugammadex sodium Impurity 46
(E)-4-chloro-6-(3-(2,4-difluorophenyl)-4-(1H-1,2,4-triazol-1-yl)but-3-en-2-yl)-5-fluoropyrimidine (E)-4-chloro-6-(3-(2,4-difluorophenyl)-4-(1H-1,2,4-triazol-1-yl)but-3-en-2-yl)-5-fluoropyrimidine
Tenofovir Impurity 103 Tenofovir Impurity 103
Cabozantinib impurity 44 Cabozantinib impurity 44
Cabozantinib impurity 40 Cabozantinib impurity 40
Cabozantinib impurity 74 Cabozantinib impurity 74
Doxofylline Impurity 25 Doxofylline Impurity 25
Dapoxetine impurity 62 Dapoxetine impurity 62
Dapoxetine impurity 56 Dapoxetine impurity 56
N-[4-[[(2,4-ジアミノプテリジン-6-イル)メチル]メチルアミノ]ベンゾイル]-D-グルタミン酸 N-[4-[[(2,4-ジアミノプテリジン-6-イル)メチル]メチルアミノ]ベンゾイル]-D-グルタミン酸 51865-79-3 C20H22N8O5
Bimatoprost Impurity 11 Bimatoprost Impurity 11
Bimatoprost Impurity 9 Bimatoprost Impurity 9
Dolutegravir Impurity 18 Dolutegravir Impurity 18
3-(6'-oxo-1'-phenyl-1',6'-dihydro-[2,3'-bipyridin]-5'-yl)benzonitrile 3-(6'-oxo-1'-phenyl-1',6'-dihydro-[2,3'-bipyridin]-5'-yl)benzonitrile 380918-53-6 C23H15N3O
Lenvatinib Impurity 33 Lenvatinib Impurity 33
isopropyl 2-(2-oxopyrrolidin-1-yl)acetate isopropyl 2-(2-oxopyrrolidin-1-yl)acetate 1249080-59-8 C9H15NO3
Pitavastatin Impurity 71 Pitavastatin Impurity 71
Rosuvastatin EP Impurity M Sodium Salt Rosuvastatin EP Impurity M Sodium Salt
Furosemide impurity 8 Furosemide impurity 8
Febuxostat Impurity 108 Febuxostat Impurity 108
Flucloxacillin EP Impurity J Flucloxacillin EP Impurity J
Phosphonic acid, P-[[(1R)-2-(6-amino-9H-purin-9-yl)-1-methylethoxy]methyl]-, mono[(1R)-2-(6-amino-9H-purin-9-yl)-1-methylethyl] ester Phosphonic acid, P-[[(1R)-2-(6-amino-9H-purin-9-yl)-1-methylethoxy]methyl]-, mono[(1R)-2-(6-amino-9H-purin-9-yl)-1-methylethyl] ester 1878175-77-9 C17H23N10O4P
Hexanoic acid, 3-formyl-, ethyl ester Hexanoic acid, 3-formyl-, ethyl ester 54374-02-6 C9H16O3
D-erythro-Hexonic acid, 2,4-dideoxy-3,5-O-(1-methylethylidene)- D-erythro-Hexonic acid, 2,4-dideoxy-3,5-O-(1-methylethylidene)- 154877-92-6 C9H16O5
Linagliptin Dimer impurity (N-C-C-C Dimer)Q: What is Linagliptin Dimer impurity (N-C-C-C Dimer) Q: What is the CAS Number of Linagliptin Dimer impurity (N-C-C-C Dimer) Linagliptin Dimer impurity (N-C-C-C Dimer)Q: What is Linagliptin Dimer impurity (N-C-C-C Dimer) Q: What is the CAS Number of Linagliptin Dimer impurity (N-C-C-C Dimer) 2463617-49-2 C51H56N16O4
Benzoic acid, 4-[(1,3-dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]- Benzoic acid, 4-[(1,3-dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]- 906673-43-6 C14H11BO5
1H-Purine-2,6-dione, 8-(3-amino-1-piperidinyl)-7-(3-chloro-2-buten-1-yl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]- 1H-Purine-2,6-dione, 8-(3-amino-1-piperidinyl)-7-(3-chloro-2-buten-1-yl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]- 2138805-26-0 C25H29ClN8O2
1,3-Benzenedicarboxamide, 5-[acetyl(2,3-dihydroxypropyl)amino]-N1,N3-bis(2,3-dihydroxypropyl)-2,4-diiodo- 1,3-Benzenedicarboxamide, 5-[acetyl(2,3-dihydroxypropyl)amino]-N1,N3-bis(2,3-dihydroxypropyl)-2,4-diiodo- 1651211-78-7 C19H27I2N3O9
(E)-1-(4-(2-carboxyvinyl)benzyl)-1H-imidazole 3-oxide (E)-1-(4-(2-carboxyvinyl)benzyl)-1H-imidazole 3-oxide
Vonoprazan Impurity B-2 Vonoprazan Impurity B-2
2-(Cyanomethylthio)acetic acid 2-(Cyanomethylthio)acetic acid 55817-29-3 C4H5NO2S
Budesonide Impurity 31 Budesonide Impurity 31
Budesonide Impurity 23 Budesonide Impurity 23
Hexanoic acid, 3-(chloromethyl)-, (3R)- Hexanoic acid, 3-(chloromethyl)-, (3R)- 2101641-90-9 C7H13ClO2
Bisoprolol Impurity Bisoprolol Impurity 2226263-68-7 C18H31NO4
2(1H)-Quinolinone, 5-[(1R)-1,2-dihydroxyethyl]-8-(phenylmethoxy)- 2(1H)-Quinolinone, 5-[(1R)-1,2-dihydroxyethyl]-8-(phenylmethoxy)- 1261219-83-3 C18H17NO4
Tofacitinib Impurity Tofacitinib Impurity 2504210-41-5 C29H38N10O2
(2S,3R,4R,5S,6R)-2-(4-chloro-3-(4-ethoxy-3-ethylbenzyl)phenyl)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (2S,3R,4R,5S,6R)-2-(4-chloro-3-(4-ethoxy-3-ethylbenzyl)phenyl)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol
tert-butyl 2-((4R,6S)-6-((E)-2-(4-(3-fluorophenyl)-6-isopropyl-2-(N- methylmethylsulfonamido)pyrimidin-5-yl)vinyl)-2,2-dimethyl-1,3- dioxan-4-yl)acetate tert-butyl 2-((4R,6S)-6-((E)-2-(4-(3-fluorophenyl)-6-isopropyl-2-(N- methylmethylsulfonamido)pyrimidin-5-yl)vinyl)-2,2-dimethyl-1,3- dioxan-4-yl)acetate
2-Pentenoic acid, 3-amino-2-cyano-5-[(3R,4R)-4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-1-piperidinyl]-5-oxo-, ethyl ester, (2E)- 2-Pentenoic acid, 3-amino-2-cyano-5-[(3R,4R)-4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-1-piperidinyl]-5-oxo-, ethyl ester, (2E)- 2459302-85-1 C21H27N7O3
(1S,1'S,2S,2'S)-2,2'-((pentane-1,5-diylbis(oxy))bis(3-oxopropane-3,1-diyl))bis(1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium) (1S,1'S,2S,2'S)-2,2'-((pentane-1,5-diylbis(oxy))bis(3-oxopropane-3,1-diyl))bis(1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium) 96946-55-3 C53H72N2O12+2
Glycine, N-(2-aminobenzoyl)-, ethyl ester Glycine, N-(2-aminobenzoyl)-, ethyl ester 5973-34-2 C11H14N2O3
3,3a,4,5,6,6a-ヘキサヒドロシクロペンタ[c]ピロール-2(1H)-アミン 3,3a,4,5,6,6a-ヘキサヒドロシクロペンタ[c]ピロール-2(1H)-アミン 54528-00-6 C7H14N2
(S)-Methyl 2-aminobutanoate (S)-Methyl 2-aminobutanoate 15399-22-1 C5H11NO2
(6S,8S,9S,10R,11S,13S,14S,17R)-17-(2,2-dihydroxyacetyl)-11,17-dihydroxy-6,10,13-trimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one (6S,8S,9S,10R,11S,13S,14S,17R)-17-(2,2-dihydroxyacetyl)-11,17-dihydroxy-6,10,13-trimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one
(3R)-3α,4α-(1,3-ジベンジルウレイレン)テトラヒドロチオフェン-5-オン (3R)-3α,4α-(1,3-ジベンジルウレイレン)テトラヒドロチオフェン-5-オン 28092-52-6 C19H18N2O2S
(2S)-2-ピロリジンカルボン酸メチル (2S)-2-ピロリジンカルボン酸メチル 2577-48-2 C6H11NO2
sodium (S,Z)-2-((1S,2R)-1-carboxylato-2-hydroxypropyl)-5-(4- hydroxybutylidene)-2,5-dihydrothiazole-4-carboxylate sodium (S,Z)-2-((1S,2R)-1-carboxylato-2-hydroxypropyl)-5-(4- hydroxybutylidene)-2,5-dihydrothiazole-4-carboxylate
2,4,6-トリプロピル-1,3,5-トリオキサン 2,4,6-トリプロピル-1,3,5-トリオキサン 2396-43-2 C12H24O3
Oseltamivir Impurity 94 Oseltamivir Impurity 94
Oseltamivir Impurity 82 Oseltamivir Impurity 82
Oseltamivir Impurity 74 Oseltamivir Impurity 74
Uridine, 5'-(2-methylpropanoate) (9CI) Uridine, 5'-(2-methylpropanoate) (9CI) 886538-48-3 C13H18N2O7
Dapagliflozin Impurity 47 Dapagliflozin Impurity 47
Sitagliptin EP Impurity 7 Sitagliptin EP Impurity 7
Sitagliptin EP Impurity H Sitagliptin EP Impurity H
7-Benzofurancarboxamide, 4-amino-5-chloro-2,3-dihydro-3-hydroxy-N-[1-(3-methoxypropyl)-4-piperidinyl]- 7-Benzofurancarboxamide, 4-amino-5-chloro-2,3-dihydro-3-hydroxy-N-[1-(3-methoxypropyl)-4-piperidinyl]- 2636673-48-6 C18H26ClN3O4
Beprostatin impurity 4 Beprostatin impurity 4
N-(メトキシカルボニル)-p-トルエンスルホンアミド N-(メトキシカルボニル)-p-トルエンスルホンアミド 14437-03-7 C9H11NO4S
(1R,2R,4S,5S,7s,9r)-9-butyl-9-methyl-7-((2-phenylacryloyl)oxy)-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-9-ium (1R,2R,4S,5S,7s,9r)-9-butyl-9-methyl-7-((2-phenylacryloyl)oxy)-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-9-ium 786598-71-8 C21H28NO3+
(S)-レパグリニドエチルエステル (REPAGLINIDE IMPURITY) (S)-レパグリニドエチルエステル (REPAGLINIDE IMPURITY) 147770-06-7 C29H40N2O4
4-Chloro-2-(chloromethyl)-3-Methyl Pyridine Hydrochloride 4-Chloro-2-(chloromethyl)-3-Methyl Pyridine Hydrochloride 152402-97-6 C7H8Cl3N
4-(3-CYANO-2-METHYLPROPIONYL)ACETAMILIDE 4-(3-CYANO-2-METHYLPROPIONYL)ACETAMILIDE 42075-21-8
Erythromycin, 6-O-Methyl-2',4'-Bis-O-(Trimethylsilyl)-, 9-[O-(1-Methoxy-1-Methylethyl)Oxime] Erythromycin, 6-O-Methyl-2',4'-Bis-O-(Trimethylsilyl)-, 9-[O-(1-Methoxy-1-Methylethyl)Oxime] 119699-81-9 C48H94N2O14Si2
(R)-8-(3-aminopiperidin-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-7-(3-oxobutyl)-3,7-dihydro-1H-purine-2,6-dione (R)-8-(3-aminopiperidin-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-7-(3-oxobutyl)-3,7-dihydro-1H-purine-2,6-dione
Isavuconazole Impurity 37 Isavuconazole Impurity 37
N-((R)-1-(((R)-3-methyl-1-((3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methanobenzo[d][1,3,2]dioxaborol-2-yl)butyl)amino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide N-((R)-1-(((R)-3-methyl-1-((3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methanobenzo[d][1,3,2]dioxaborol-2-yl)butyl)amino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide 1375004-39-9 C29H39BN4O4
(S)-1-(2-(((1r,3R,5S,7S)-3,5-dihydroxyadamantan-1-yl)amino)acetyl)pyrrolidine-2-carbonitrile (S)-1-(2-(((1r,3R,5S,7S)-3,5-dihydroxyadamantan-1-yl)amino)acetyl)pyrrolidine-2-carbonitrile
Mannitol EP impurity B Mannitol EP impurity B
Mannitol EP impurity A Mannitol EP impurity A
Peramivir Amino Carboxylic Isomerism Impurity Peramivir Amino Carboxylic Isomerism Impurity
Peramivir Chlorinated Impurity Peramivir Chlorinated Impurity
Brivaracetam Impurity 999 Brivaracetam Impurity 999
Dasatinib impurity 48 Dasatinib impurity 48
Pemetrexed Impurity 120 Pemetrexed Impurity 120
Ticagrelor Impurity 101 Ticagrelor Impurity 101
4-tosyl-1,4,8,11-tetraazabicyclo[9.3.1]pentadecane 4-tosyl-1,4,8,11-tetraazabicyclo[9.3.1]pentadecane
1-(3-((2,4-dimethylphenyl)thio)phenyl)piperazine hydrochloride 1-(3-((2,4-dimethylphenyl)thio)phenyl)piperazine hydrochloride 2137793-92-9
(R)-(-)-2-AMINOBUTANAMIDE HYDROCHLORIDE, 97% (R)-(-)-2-AMINOBUTANAMIDE HYDROCHLORIDE, 97% 103765-03-3 C4H11ClN2O
Flomoxef Impurity 20 Sodium Salt Flomoxef Impurity 20 Sodium Salt 2095697-77-9 C15H18F2N6O7S2
((2R,3S,4R)-3,4,5-trihydroxytetrahydrofuran-2-yl)methyl isobutyrate ((2R,3S,4R)-3,4,5-trihydroxytetrahydrofuran-2-yl)methyl isobutyrate 2591381-21-2 C9H16O6
3-Thiophenecarboxylic acid, 4-(bromomethyl)-2-[[(2,6-difluorophenyl)methyl](propoxycarbonyl)amino]-5-(4-nitrophenyl)-, ethyl ester 3-Thiophenecarboxylic acid, 4-(bromomethyl)-2-[[(2,6-difluorophenyl)methyl](propoxycarbonyl)amino]-5-(4-nitrophenyl)-, ethyl ester 2591260-07-8 C25H23BrF2N2O6S
Cyclohexanecarboxylic acid, 2-[[[4-[4-(1,2-benzisothiazol-3-yl)-1-piperazinyl]butyl]amino]carbonyl]-, (1R,2S)-rel- Cyclohexanecarboxylic acid, 2-[[[4-[4-(1,2-benzisothiazol-3-yl)-1-piperazinyl]butyl]amino]carbonyl]-, (1R,2S)-rel- 190582-37-7 C23H32N4O3S
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