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Structure Chemical Name CAS MF
Cefaclor Impurity 1 Cefaclor Impurity 1
Cefminox Sodium impurity 4 Cefminox Sodium impurity 4
Cefradine Impurity B Cefradine Impurity B
Dapoxetine Impurity F Dapoxetine Impurity F
Olaparib Impurity E Olaparib Impurity E
Cefathiamidine Impurity 6 Cefathiamidine Impurity 6 28240-16-6 C12H13ClN2O6S
rac-2,2'-(((3aR,3a'R,4R,4'R,6S,6aS,6'S,6a'S)-((5-nitro-2-(propylthio)pyrimidine-4,6-diyl)bis(azanediyl))bis(2,2-dimethyltetrahydro-4H-cyclopenta[d][1,3]dioxole-6,4-diyl))bis(oxy))bis(ethan-1-ol) rac-2,2'-(((3aR,3a'R,4R,4'R,6S,6aS,6'S,6a'S)-((5-nitro-2-(propylthio)pyrimidine-4,6-diyl)bis(azanediyl))bis(2,2-dimethyltetrahydro-4H-cyclopenta[d][1,3]dioxole-6,4-diyl))bis(oxy))bis(ethan-1-ol) 1882095-50-2 C27H43N5O10S
Empagliflozin Impurity 79 Empagliflozin Impurity 79
Imatinib impurity 31 Imatinib impurity 31 1356565-47-3 C17H17N7
Empagliflozin Impurity 89 Empagliflozin Impurity 89 2452301-32-3 C23H25ClO7
LCZ696(valsartan + sacubitril) impurity 33 LCZ696(valsartan + sacubitril) impurity 33
Levocarnitine Impurity F Levocarnitine Impurity F 6490-19-3 C7H17ClN2O2
Lenvatinib Impurity 26 Lenvatinib Impurity 26
4,4-dimethyl-2-(2-phenylpropan-2-yl)oxazo‐ line 4,4-dimethyl-2-(2-phenylpropan-2-yl)oxazo‐ line 874895-87-1 C14H19NO
Ozagrel impurity C Ozagrel impurity C
Formoterol Impurity 4 Formoterol Impurity 4
Regorafenib Impurity 24 Regorafenib Impurity 24
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
Regorafenib Impurity 32 Regorafenib Impurity 32
Sitafloxacin Impurity ZZ-A-01 Sitafloxacin Impurity ZZ-A-01
Solifenacin impurity 18 Solifenacin impurity 18 1243274-83-0 C14H17NO3
Tofacitinib Impurity 87 Tofacitinib Impurity 87
Tofacitinib Impurity 92 Tofacitinib Impurity 92
Amlodipine EP Impurity K Amlodipine EP Impurity K C26H31ClN2O8S
Febuxostat Impurity 49 Febuxostat Impurity 49
Budesonide Impurity 6 Budesonide Impurity 6 131918-73-5 C21H26O6
Timolol Impurity 1 Timolol Impurity 1 75014-25-4 C13H24N4O5S
Telmisartan EP-J Telmisartan EP-J 885045-90-9 C33H29ClN4O2
Pitavastatin Impurity 29 Pitavastatin Impurity 29 148516-15-8 C25H20FNO2
Rosuvastatin Related Compound 6 Rosuvastatin Related Compound 6 521973-99-9 C13H23ClO4
Piperacillin Impurity R Piperacillin Impurity R
Lasmiditan Impurity 6 Lasmiditan Impurity 6
1-methylpyrrolidin-3-yl 2-(4-chlorophenyl)-2-cyclopentyl- 2-hydroxyacetate hydrochloride 1-methylpyrrolidin-3-yl 2-(4-chlorophenyl)-2-cyclopentyl- 2-hydroxyacetate hydrochloride
Lasmiditan Impurity 8 Lasmiditan Impurity 8
Ethacridine Impurity 10 Ethacridine Impurity 10 20304-71-6 C21H16N2O4
(S)-N-(1-Azabicyclo[2.2.2]oct-3-yl)-5,6,7,8-tetrahydro-1-naphthalenecarboxamide (S)-N-(1-Azabicyclo[2.2.2]oct-3-yl)-5,6,7,8-tetrahydro-1-naphthalenecarboxamide 135729-78-1 C18H24N2O
2-(2-(4-chlorobenzoyl)phenoxy)-2-methylpropanoic acid 2-(2-(4-chlorobenzoyl)phenoxy)-2-methylpropanoic acid
Olodaterol Impurity 31 Olodaterol Impurity 31
(S)-N-[(2S,4S,5S)-5-アミノ-4-ヒドロキシ-1,6-ジフェニルヘキサン-2-イル]-3-メチル-2-(2-オキソテトラヒドロピリミジン-1(2H)-イル)ブタンアミド (S)-N-[(2S,4S,5S)-5-アミノ-4-ヒドロキシ-1,6-ジフェニルヘキサン-2-イル]-3-メチル-2-(2-オキソテトラヒドロピリミジン-1(2H)-イル)ブタンアミド 192726-05-9 C27H38N4O3
2-Hydrazinoadenosine 2-Hydrazinoadenosine 15763-11-8 C10H15N7O4
N-Desmethyl Clarithromycin N-Desmethyl Clarithromycin 101666-68-6 C37H67NO13
3α-(ヒドラジノカルボニル)-3-デス(メトキシカルボニル)-4-O-デスアセチルビンカロイコブラスチン 3α-(ヒドラジノカルボニル)-3-デス(メトキシカルボニル)-4-O-デスアセチルビンカロイコブラスチン 55383-37-4 C43H56N6O7
4-hydroxypyrrolidin-2-one 4-hydroxypyrrolidin-2-one 96820-00-7 C4H7NO2
glycopyrronium bromide glycopyrronium bromide 475468-09-8 C19H28NO3.Br
4'-ヒドロキシ フルルビプロフェン 4'-ヒドロキシ フルルビプロフェン 52807-12-2 C15H13FO3
D-biotin-d-sulfoxide D-biotin-d-sulfoxide 10406-89-0 C10H16N2O4S
3,4-ジヒドロキシフェニルピルビン酸 3,4-ジヒドロキシフェニルピルビン酸 4228-66-4 C9H8O5
delta(3)-cefotiam delta(3)-cefotiam 142182-63-6 C18H23N9O4S3
alpha-(chloromethyl)-2-hydroxymethyl-5-nitroimidazole-1-ethanol alpha-(chloromethyl)-2-hydroxymethyl-5-nitroimidazole-1-ethanol 62580-79-4 C7H10ClN3O4
4-hydroxypenicillin V 4-hydroxypenicillin V 20880-67-5 C16H18N2O6S
ベナゼプリラト ベナゼプリラト 86541-78-8 C22H24N2O5
2-(4-ピペリジニル)ベンゾイミダゾール 2-(4-ピペリジニル)ベンゾイミダゾール 38385-95-4 C12H15N3
4-CHLORO-3,5-DIMETHYL 2-CHLORMETHYL PYRIDINE.HCL 4-CHLORO-3,5-DIMETHYL 2-CHLORMETHYL PYRIDINE.HCL 142885-96-9 C8H9Cl2N
1,3,5(10),9(11)-エストラテトラエン-3,17β-ジオール 1,3,5(10),9(11)-エストラテトラエン-3,17β-ジオール 791-69-5 C18H22O2
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
Prasugrel Acetyl IMpurity Prasugrel Acetyl IMpurity 1443034-67-0 C18H18FNO3S
Propofol IMpurity G Propofol IMpurity G
SalMeterol IMpurity A SalMeterol IMpurity A C25H37NO4
3-([(TERT-ブチルトキシ)カルボニル]アミノ)-4-(2,4-ジフルオロフェニル)ブタン酸 3-([(TERT-ブチルトキシ)カルボニル]アミノ)-4-(2,4-ジフルオロフェニル)ブタン酸 851307-12-5 C15H19F2NO4
N-Boc-シタグリプチン N-Boc-シタグリプチン 486460-23-5 C21H23F6N5O3
SulbactaM IMpurity D SulbactaM IMpurity D
Valsartan N2-Trityl IMpurity Valsartan N2-Trityl IMpurity
Vardenafil IMpurity 3 Vardenafil IMpurity 3 1255919-01-7 C26H30N6O4S
Montelukast Cyclopropaneacetonitrile Montelukast Cyclopropaneacetonitrile 866923-62-8 C35H35ClN2OS
(2S,3R,4S,5S,6R)-2-(4-クロロ-3-(4-エトキシベンジル)フェニル)-6-(ヒドロキシメチル)-2-メトキシテトラヒドロ-2H-ピラン-3,4,5-トリオール (2S,3R,4S,5S,6R)-2-(4-クロロ-3-(4-エトキシベンジル)フェニル)-6-(ヒドロキシメチル)-2-メトキシテトラヒドロ-2H-ピラン-3,4,5-トリオール 461432-24-6 C22H27ClO7
Ezetimibe Impurity Ezetimibe Impurity 1510820-22-0 C24H23F2NO2
Medetomidine impurity Medetomidine impurity 2250243-44-6 C20H22N2O
Linagliptin Impurity 51 Linagliptin Impurity 51
Carfilzomib Impurity YGF Carfilzomib Impurity YGF
Pitavastatin Impurity 45 Pitavastatin Impurity 45 1258947-29-3 C29H32FNO4
Irinotecan Impurity L Irinotecan Impurity L
Irinotecan Impurity H Irinotecan Impurity H
LCZ696（valsartan + sacubitril） impurity 27 LCZ696（valsartan + sacubitril） impurity 27
Caspofungin Impurity EJT2 Caspofungin Impurity EJT2
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