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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Trelagliptin Impurity 41 Trelagliptin Impurity 41
Carbocistein Impurity D Carbocistein Impurity D
Ranitidine impurity F Ranitidine impurity F C13H22N4O3S
Beclometasone Impurity B Beclometasone Impurity B
(3R)-Nmethyl-3-(3-methylphenoxy)-3-phenylpropan-1-amine (3R)-Nmethyl-3-(3-methylphenoxy)-3-phenylpropan-1-amine 1643684-05-2 C17H22ClNO
Caspofungin Impurity 6 Caspofungin Impurity 6
Erythromycin Impurity 3 Erythromycin Impurity 3 1357466-70-6 C38H69N3O13S
Itraconazole iMpurity 6 Itraconazole iMpurity 6
Ribavirin API  Impurity O Ribavirin API Impurity O 799-87-1 C13H11N2O8P
Aprepitant Impurity 14 Aprepitant Impurity 14
Trelagliptin Impurity 16 Trelagliptin Impurity 16
Decitabine Impurity 7 Decitabine Impurity 7
Fosaprepitant Impurity 6 Fosaprepitant Impurity 6
Dapoxetine Impurity 6 Dapoxetine Impurity 6
Regorafenib Impurity 13 Regorafenib Impurity 13
Topiroxostat Impurity 4 Topiroxostat Impurity 4
Bosutinib Impurity 8 Bosutinib Impurity 8
Ticagrelor Impurity 13 Ticagrelor Impurity 13
edaravone iMpurity edaravone iMpurity
(2R,3R,4R,5S,6R)-2-(3-((5-(4-fluorophenyl)thiophen-2-yl)Methyl)-4-Methylphenyl)-6-(hydroxyMethyl)tetrahydro-2H-pyran-3,4,5-triol (2R,3R,4R,5S,6R)-2-(3-((5-(4-fluorophenyl)thiophen-2-yl)Methyl)-4-Methylphenyl)-6-(hydroxyMethyl)tetrahydro-2H-pyran-3,4,5-triol C24H25FO5S
(1R,3S)-(3-Aminocyclopentyl) methanol (1R,3S)-(3-Aminocyclopentyl) methanol 117957-62-7 C6H13NO
2-[[6-[(3R)-3-tert-butoxycarbonylamino-1-piperidinyl]-3,4-dihydro-2,4-dioxo-3-methyl-1(2H)-pyrimidinyl]methyl]benzonitrile 2-[[6-[(3R)-3-tert-butoxycarbonylamino-1-piperidinyl]-3,4-dihydro-2,4-dioxo-3-methyl-1(2H)-pyrimidinyl]methyl]benzonitrile 1246610-74-1 C23H29N5O4
Canagliflozin Impurity 12 Canagliflozin Impurity 12
Canagliflozin Impurity G Canagliflozin Impurity G
Dolutegravir Impurity 1 Dolutegravir Impurity 1
Empagliflozin impurity F Empagliflozin impurity F
Ibrutinib Impurity 12 Ibrutinib Impurity 12
Nintedanib impurity J Nintedanib impurity J 1139457-10-5 C23H17N3O5
DSKNHVUKATXSCQ-GDVCOKDOSA-N DSKNHVUKATXSCQ-GDVCOKDOSA-N 188915-50-6 C14H14ClN3O4S
Clarthromycin EP Impurity B Clarthromycin EP Impurity B 299409-85-1 C37H67NO13
(4-Chloro-3-trifluoromethyl-phenyl)-carbamic acid tert-butyl ester (4-Chloro-3-trifluoromethyl-phenyl)-carbamic acid tert-butyl ester 352277-93-1 C12H13ClF3NO2
Brexpiprazole Impurity 15 Brexpiprazole Impurity 15
Edoxaban Impurity 16 Edoxaban Impurity 16 480450-69-9 C14H25N5O3
Rivaroxaban Impurity 24 Rivaroxaban Impurity 24
Ticagrelor Ticagrelor 1265919-24-1 C12H21NO5
Clindamycin (2R-cis)-Diastereomer Clindamycin (2R-cis)-Diastereomer 1440605-46-8 C18H33ClN2O5S
Genistein 7,4'-di-O-β-D-glucopyranoside Genistein 7,4'-di-O-β-D-glucopyranoside 36190-98-4 C27H30O15
Aprepitant Impurity 3 Aprepitant Impurity 3
Cabozantinib Impurity F Cabozantinib Impurity F
Cefmetazole sodium Impurity 7 Cefmetazole sodium Impurity 7 60638-57-5 C11H14N6O4S2
Tadalafil EP Impurity I Tadalafil EP Impurity I
1,4'-Bipiperidine, 1'-(phenylmethyl)- 1,4'-Bipiperidine, 1'-(phenylmethyl)- 116269-53-5 C17H26N2
[2-(4-Methoxyphenyl)-1-methylethyl]-formamide [2-(4-Methoxyphenyl)-1-methylethyl]-formamide 126002-14-0 C11H15NO2
Ticagrelor Impurity 66 Ticagrelor Impurity 66
Canagliflozin Impurity 8 Canagliflozin Impurity 8
Canagliflozin Impurity 16 Canagliflozin Impurity 16
Oseltamivir Impurity 12 Oseltamivir Impurity 12
Oseltamivir Impurity 32 Oseltamivir Impurity 32
Riociguat IMpurtiy E Riociguat IMpurtiy E
Meropenem impurity diastereomer 2 Meropenem impurity diastereomer 2 96035-15-3 C15H19N3O5S
Clindamycin Impurity A Clindamycin Impurity A
Tigecycline Impurity F Tigecycline Impurity F
Fasudil iMpurity A Fasudil iMpurity A
Cefminox Impurity C Cefminox Impurity C
Androst-16-en-3-ol, 17-(3-pyridinyl)-, acetate (ester),(3β,5α)- Androst-16-en-3-ol, 17-(3-pyridinyl)-, acetate (ester),(3β,5α)- 219843-76-2 C26H35NO2
5-(4-fluorophenyl)-1H-pyrrole-3-carbaldehyde 5-(4-fluorophenyl)-1H-pyrrole-3-carbaldehyde C11H8FNO
Ganciclovir EP Impurity H Ganciclovir EP Impurity H 84222-50-4 C9H13N5O4
2-[4-[(1E)-1,2-Diphenylethenyl]phenoxy]-N,N-dimethylethanamine 2-[4-[(1E)-1,2-Diphenylethenyl]phenoxy]-N,N-dimethylethanamine 97151-10-5 C24H25NO
[S-(R*,R*)]-3,3'-Dithiobis[2-methylpropanoic acid] [S-(R*,R*)]-3,3'-Dithiobis[2-methylpropanoic acid] 65134-74-9 C8H14O4S2
(E)-1-(4-(2-Methyl-10H-benzo[b]thieno[2,3-e][1,4]diazepin-4-yl)piperazin-1-yl)ethanone (E)-1-(4-(2-Methyl-10H-benzo[b]thieno[2,3-e][1,4]diazepin-4-yl)piperazin-1-yl)ethanone 935272-10-9 C18H20N4OS
2-(thiophen-3-yl)ethyl 4-methylbenzenesulfonate 2-(thiophen-3-yl)ethyl 4-methylbenzenesulfonate 40412-09-7 C13H14O3S2
4-Nitrophenyl 5-chlorothiophene-2-carboxylate 4-Nitrophenyl 5-chlorothiophene-2-carboxylate 1450877-56-1 C11H6ClNO4S
Olaparib iMpurity B Olaparib iMpurity B
Posaconazole iMpurity 6 Posaconazole iMpurity 6 2185472-85-7 C30H35N5O3
Everolimus Isomer C Everolimus Isomer C
3-Deschloro-4-Desfluoro-4-Chloro-3-Fluorogefitinib 3-Deschloro-4-Desfluoro-4-Chloro-3-Fluorogefitinib 1603814-04-5 C22H24ClFN4O3
Brivaracetam (Racemate) Brivaracetam (Racemate) 357335-87-6 C11H20N2O2
Donepezil Impurity 2 Donepezil Impurity 2 36517-91-6 C11H10O4
Fesoterodine Related Impurity 2 Fesoterodine Related Impurity 2 1254942-29-4 C30H39NO6
Prasugrel Impurity 13 HCl Prasugrel Impurity 13 HCl 1618108-01-2 C18H19ClFNOS
Ticagrelor Related Compound 5 Ticagrelor Related Compound 5 1414348-35-8 C9H9F2N
Vortioxetine Impurity 2 Vortioxetine Impurity 2 1293489-69-6 C17H20N2S
Chrysin 6-C-arabinoside 8-C-glucoside Chrysin 6-C-arabinoside 8-C-glucoside 185145-33-9 C26H28O13
Meloside A Meloside A 60767-80-8 C27H30O15
(S)-2-(2-(5-chloro-N-(4-(5-((5-chlorothiophene-2-carboxamido)methyl)-2-oxooxazolidin-3-yl)phenyl)thiophene-2-carboxamido)ethoxy)acetic acid (S)-2-(2-(5-chloro-N-(4-(5-((5-chlorothiophene-2-carboxamido)methyl)-2-oxooxazolidin-3-yl)phenyl)thiophene-2-carboxamido)ethoxy)acetic acid 1151893-81-0 C24H21Cl2N3O7S2
Cilastatin ammonium salt Cilastatin ammonium salt 877674-82-3 C16H29N3O5S
ACETIC ACID 2-METHOXY-4-(5-OXO-2-PHENYL-OXAZOL-4-YLIDENEMETHYL)-PHENYL ESTER ACETIC ACID 2-METHOXY-4-(5-OXO-2-PHENYL-OXAZOL-4-YLIDENEMETHYL)-PHENYL ESTER 18692-68-7 C19H15NO5
1,4-di(benzo[b]thiophen-4-yl)piperazine 1,4-di(benzo[b]thiophen-4-yl)piperazine 1420987-86-5 C20H18N2S2
Benzene, 1-chloro-2-(dimethoxymethyl)- Benzene, 1-chloro-2-(dimethoxymethyl)- 70380-66-4 C9H11ClO2
(R)-1-chloro-3-{[(4-chlorophenyl)methylene]amino}propan-2-ol (R)-1-chloro-3-{[(4-chlorophenyl)methylene]amino}propan-2-ol 1450915-93-1 C10H11Cl2NO
3-(trifluoromethyl)-6,7-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-8(5H)-one 3-(trifluoromethyl)-6,7-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-8(5H)-one 877402-45-4 C6H5F3N4O
4-((5,6-dimethoxy-1H-inden-2-yl)methyl)piperidine 4-((5,6-dimethoxy-1H-inden-2-yl)methyl)piperidine 1026443-48-0 C17H23NO2
epipinoresinol-4'-O-β-D-glucoside epipinoresinol-4'-O-β-D-glucoside 24404-49-7 C26H32O11
Celecoxib Impurity Celecoxib Impurity 170570-09-9 C18H16F3N3O2S
Indacaterol Impurity 7 Indacaterol Impurity 7 1403389-05-8 C24H30N2O3
tert-butyl 4-(6-((6-acetyl-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)pyridin-3-yl)piperazine-1-carboxylate tert-butyl 4-(6-((6-acetyl-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)pyridin-3-yl)piperazine-1-carboxylate 1883672-48-7 C29H38ClN7O4
1-cyclopropyl-7-fluoro-6,8-dimethoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid 1-cyclopropyl-7-fluoro-6,8-dimethoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid C15H14FNO5
cis-cyclo(Pro-Pro) cis-cyclo(Pro-Pro) 19943-27-2 C10H14N2O2
Ropivacaine-cycle Ropivacaine-cycle 1945965-95-6 C17H24N2O
4-(5-methyl-4-phenylisoxazol-3-yl)benzenesulfonamide 4-(5-methyl-4-phenylisoxazol-3-yl)benzenesulfonamide 181696-12-8 C16H14N2O3S
Bupivacaine  Impurity Bupivacaine Impurity 2125995-27-7 C18H28N2O.ClH
Brexpiprazole  Impurity Brexpiprazole Impurity 2059954-32-2 C17H21Cl2NO2
BDJS-SH 2 BDJS-SH 2 36585-31-6 C12H18N2O2
Acyclovir Impurity Q Acyclovir Impurity Q
Ampicillin EP Impurity M Ampicillin EP Impurity M 114977-84-3 C48H57N9O12S3
Aprepitant Impurity 12 Aprepitant Impurity 12 172673-23-3 C23H21F7N4O4
Aprepitant Impurity 18 Aprepitant Impurity 18
Blonanserin impurity D Blonanserin impurity D
Captopril impurity 3 Captopril impurity 3
Empagliflozin Impurity 18 Empagliflozin Impurity 18
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