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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Parecoxib Impurity T Parecoxib Impurity T 198471-83-9 C19H18N2O5S
Ropivacaine Impurity 31 Ropivacaine Impurity 31
Ropivacaine Impurity 40 Ropivacaine Impurity 40
Sugammadex sodium Decomposition process Impurity 3 Sugammadex sodium Decomposition process Impurity 3
Sugammadex sodium Org48301 Impurity Sugammadex sodium Org48301 Impurity
Topiroxostat Impurity Ⅱ-3 Topiroxostat Impurity Ⅱ-3
Ivabradine related compound 9 Ivabradine related compound 9 85175-49-1 C12H13NO4
Afatinib impurity 28 Afatinib impurity 28
blonanserin impurity O blonanserin impurity O
Butyphthalide impurity 42 Butyphthalide impurity 42 952412-79-2 C10H12O3
Butyphthalide impurity 48 Butyphthalide impurity 48
Dapoxetine impurity 20 Dapoxetine impurity 20
Empagliflozin Impurity POE Empagliflozin Impurity POE
Febuxostat Impurity 73 Febuxostat Impurity 73
Febuxostat Impurity 78 Febuxostat Impurity 78
Ibrutinib Impurity 21 Ibrutinib Impurity 21 1642571-08-1 C27H30N6O3
Lenvatinib Impurity 22 Lenvatinib Impurity 22
Moxifloxacin Impurity 47 Moxifloxacin Impurity 47
Parecoxib sodium Impurity 35 Parecoxib sodium Impurity 35
Tofacitinib Impurity 20 Tofacitinib Impurity 20 1092578-44-3 C27H31N5O2S
Tofacitinib Impurity 88 Tofacitinib Impurity 88
Vildagliptin Impurity ZA9 Vildagliptin Impurity ZA9
Nintedanib Impurity K Nintedanib Impurity K
13-Cis Vitamin A Palmitate 13-Cis Vitamin A Palmitate 26771-20-0 C36H60O2
Apixaban Amino Acid Impurity Apixaban Amino Acid Impurity 2206825-87-6 C25H27N5O5
Bortezomib Impurity 52 Bortezomib Impurity 52 87304-47-0 C15H26BClO2
Moxifloxacin Impurity 20 HCl Moxifloxacin Impurity 20 HCl 959347-97-8 C21H25N3O4
2-amino-3,5-dibromo-N-((1r,4r)-4-hydroxycyclohexyl)benzamide 2-amino-3,5-dibromo-N-((1r,4r)-4-hydroxycyclohexyl)benzamide 105735-86-2 C13H16Br2N2O2
Palonosetron Impurity TM1-RR Palonosetron Impurity TM1-RR 1022895-91-5 C15H23ClN2
Eltrombopag Impurity 6 Eltrombopag Impurity 6
(1r,4r)-4-((2-amino-3-bromobenzyl)amino)cyclohexanol hydrochloride (1r,4r)-4-((2-amino-3-bromobenzyl)amino)cyclohexanol hydrochloride C13H20BrClN2O
(1s,4s)-4-((2-amino-5-bromobenzyl)amino)cyclohexanol hydrochloride (1s,4s)-4-((2-amino-5-bromobenzyl)amino)cyclohexanol hydrochloride 5579-35-1 C13H20BrClN2O
Moxifloxacin oxide Impurity Moxifloxacin oxide Impurity
Edaravone Impurity 18 Edaravone Impurity 18
Linagliptin Impurity 47 Linagliptin Impurity 47
(3R,5S,E)-7-(4-(4-fluorophenyl)-2-((2-hydroxy-N,2-dimethylpropyl)sulfonamido)-6-isopropylpyrimidin-5-yl)-3,5-dihydroxyhept-6-enoic acid (3R,5S,E)-7-(4-(4-fluorophenyl)-2-((2-hydroxy-N,2-dimethylpropyl)sulfonamido)-6-isopropylpyrimidin-5-yl)-3,5-dihydroxyhept-6-enoic acid 1715120-13-0 C25H34FN3O7S
Cabozantinib impurity 28 Cabozantinib impurity 28
Cabozantinib impurity 33 Cabozantinib impurity 33
Ondansetron Impurity 2 Ondansetron Impurity 2
Rivaroxaban Degradation Impurity C Rivaroxaban Degradation Impurity C
Irsogladine Impurity DQJ Irsogladine Impurity DQJ 61382-84-1 C9H6Cl2N4O
Pregabalin Impurity 7 Pregabalin Impurity 7 70767-77-0 C8H13NO3
Pregabalin Impurity 13 Pregabalin Impurity 13 1089315-68-3 C7H11NO3
Pralatrexate Impurity 7 Pralatrexate Impurity 7
Pitavastatin Impurity 39 Pitavastatin Impurity 39
Dapoxetine impurity 31 Dapoxetine impurity 31
Lenvatinib Impurity 36 Lenvatinib Impurity 36
Sitafloxacin Impurity 19 Sitafloxacin Impurity 19
Febuxostat Impurity 97 Febuxostat Impurity 97
Dapoxetine impurity 32 Dapoxetine impurity 32
Olprinone Impurity D Olprinone Impurity D
Atracurium Impurity 30 Atracurium Impurity 30
Canagliflozin Impurity 48 Canagliflozin Impurity 48
Canagliflozin Impurity 54 Canagliflozin Impurity 54
ICOFQCJKJOISKD-HSZRJFAPSA-N ICOFQCJKJOISKD-HSZRJFAPSA-N 1435768-96-9 C26H35NO3
4-[1-methoxy-2-(methylamino)ethyl]benzene-1,2-diol:hydrochloride 4-[1-methoxy-2-(methylamino)ethyl]benzene-1,2-diol:hydrochloride 74571-90-7 C10H16ClNO3
(1-methylpiperidin-4-yl)(pyridin-2-yl)methanone (1-methylpiperidin-4-yl)(pyridin-2-yl)methanone 517875-04-6 C12H16N2O
2-cyano-1,3-bis(2-(((5-methyl-1H-imidazol-4-yl)methyl)thio)ethyl)guanidine 2-cyano-1,3-bis(2-(((5-methyl-1H-imidazol-4-yl)methyl)thio)ethyl)guanidine 55272-86-1 C16H24N8S2
3-(4-(4-amino-5-chloro-2,3-dihydrobenzofuran-7-carboxamido)piperidin-1-yl)propyl 4-amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylate 3-(4-(4-amino-5-chloro-2,3-dihydrobenzofuran-7-carboxamido)piperidin-1-yl)propyl 4-amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylate
(1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2-(dimethylglycyl)-2,3,4,9-tetrahydro-1H-pyrido [3,4-b]indole-3-carboxylate methyl (1R,3R)-1-(benzo[d][1,3]dioxol-5-yl)-2-(dimethylglycyl)-2,3,4,9-tetrahydro-1H-pyrido [3,4-b]indole-3-carboxylate methyl 2169996-11-4 C24H25N3O5
Fulvestrant impurity G Fulvestrant impurity G
4-tert-Butyl-N-(6-chloro-5-(2-methoxyphenoxy)-2,2'-bipyrimidin-4-yl)benzenesulfonamide 4-tert-Butyl-N-(6-chloro-5-(2-methoxyphenoxy)-2,2'-bipyrimidin-4-yl)benzenesulfonamide 150727-06-3 C25H24ClN5O4S
GLICLAZIDE IMPURITY B GLICLAZIDE IMPURITY B
ISOPROMETHAZINE HYDROCHLORIDE ISOPROMETHAZINE HYDROCHLORIDE 5568-90-1 C17H21ClN2S
monocalcium mono((3R,5S,E)-7-(4-(2-fluorophenyl)-6-isopropyl-2- (N-methylmethylsulfonamido)pyrimidin-5-yl)-3,5-dihydroxyhept-6- enoate) monocalcium mono((3R,5S,E)-7-(4-(2-fluorophenyl)-6-isopropyl-2- (N-methylmethylsulfonamido)pyrimidin-5-yl)-3,5-dihydroxyhept-6- enoate)
Benzenepropanoic acid, 4-(2-oxiranylmethoxy)- Benzenepropanoic acid, 4-(2-oxiranylmethoxy)- 2167848-51-1 C12H14O4
(S)-(+)-N,N-Dimethyl-3-(1-naphthalenyloxy)-3-(2-thienyl)propanamine (S)-(+)-N,N-Dimethyl-3-(1-naphthalenyloxy)-3-(2-thienyl)propanamine 132335-46-7 C19H21NOS
D-Tryptophan, N-(trifluoroacetyl)- (9CI) D-Tryptophan, N-(trifluoroacetyl)- (9CI) 22220-03-7 C13H11F3N2O3
2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-N-(5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-1H-indazol-3-yl)benzamide 2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-N-(5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-1H-indazol-3-yl)benzamide
1H-benzo[d][1,2,3]triazol-1-yl 2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoate 1H-benzo[d][1,2,3]triazol-1-yl 2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoate
1-Ethyl-3(3-dimethylamino)urea 1-Ethyl-3(3-dimethylamino)urea 32897-26-0 C8H19N3O
Brivaracetam Impurity 29 Brivaracetam Impurity 29
L-erythro-Hexuronic acid, 3,5-dideoxy-, 1,1-dimethylethyl ester L-erythro-Hexuronic acid, 3,5-dideoxy-, 1,1-dimethylethyl ester 1501982-84-8 C10H18O5
(Gly8-OH)-Carbetocin (Impurity B) (Gly8-OH)-Carbetocin (Impurity B)
D-Asn4-Carbetocin (Impurity F) D-Asn4-Carbetocin (Impurity F)
Benzoic acid, 2-(1',6'-dihydro-6'-oxo-1'-phenyl[2,3'-bipyridin]-5'-yl)-, methyl ester Benzoic acid, 2-(1',6'-dihydro-6'-oxo-1'-phenyl[2,3'-bipyridin]-5'-yl)-, methyl ester 543699-60-1 C24H18N2O3
1,2-bis(2-methoxyphenoxy)ethane 1,2-bis(2-methoxyphenoxy)ethane 553-45-7 C16H18O4
Dispiro[11H-benzo[5,6]cyclohepta[1,2-b]pyridine-11,2'-oxirane-3',4''-piperidine]-1''-carboxylic acid, 8-chloro-5,6-dihydro-, ethyl ester, 1-oxide Dispiro[11H-benzo[5,6]cyclohepta[1,2-b]pyridine-11,2'-oxirane-3',4''-piperidine]-1''-carboxylic acid, 8-chloro-5,6-dihydro-, ethyl ester, 1-oxide 1432057-93-6 C22H23ClN2O4
Oseltamivir Impurity 109 Oseltamivir Impurity 109
Oseltamivir Impurity 81 Oseltamivir Impurity 81
Oseltamivir Impurity 71 Oseltamivir Impurity 71
1-hydrazino-3-(methylthio)propan-2-ol 1-hydrazino-3-(methylthio)propan-2-ol 14359-97-8 C4H12N2OS
Benzenemethanol, 4-(3-chloro-2-hydroxypropoxy)- Benzenemethanol, 4-(3-chloro-2-hydroxypropoxy)- 293302-44-0 C10H13ClO3
trans N-Benzyl Paroxetine trans N-Benzyl Paroxetine 105813-14-7 C26H26FNO3
Lasmiditan Impurity 10 Lasmiditan Impurity 10
Nilotinib N-Oxide Impurity 3 Nilotinib N-Oxide Impurity 3
Pemetrexed Impurity 51 Pemetrexed Impurity 51
6-((S)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-7-fluoro-1-((1R,2S)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid 6-((S)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-7-fluoro-1-((1R,2S)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
(S)-Tamsulosin Hydrochloride (S)-Tamsulosin Hydrochloride 106463-19-8 C20H29ClN2O5S
2,2'-Bisnalmefene 2,2'-Bisnalmefene 176220-84-1 C42H48N2O6
4-Desmethoxypropoxyl-4-chloro Rabeprazole 4-Desmethoxypropoxyl-4-chloro Rabeprazole 168167-42-8 C14H12ClN3OS
N-Desmethyl-4-hydroxy Tamoxifen (approx. 1:1 E/Z Mixture) N-Desmethyl-4-hydroxy Tamoxifen (approx. 1:1 E/Z Mixture) 110025-28-0 C25H27NO2
Atracurium Impurity 33 Atracurium Impurity 33
Tofacitinib Impurity 105 Tofacitinib Impurity 105
Cabozantinib impurity Q Cabozantinib impurity Q
Gadobutrol Impurity 1 Gadobutrol Impurity 1 216670-14-3 C22H42ClLiN4O6
Pemetrexed disodium EP Impurity B Pemetrexed disodium EP Impurity B
Crisaborole Impurity 7 Crisaborole Impurity 7
Valnemulin EP Impurity A Valnemulin EP Impurity A 1624614-06-7 C31H52N2O6S
Olprinone Impurity F Olprinone Impurity F
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