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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Empagliflozin Impurity 60 Empagliflozin Impurity 60
Linagliptin Impurity 57 Linagliptin Impurity 57
Linagliptin Impurity 62 Linagliptin Impurity 62
Metronidazole Impurity 12 Metronidazole Impurity 12
Nintedanib Impurity 36 Nintedanib Impurity 36
Oseltamivir Impurity 47 Oseltamivir Impurity 47
Palbociclib Impurity 67 Palbociclib Impurity 67
Pimecrolimus Impurity 3 Pimecrolimus Impurity 3
Rosuvastatin Impurity 82 Rosuvastatin Impurity 82
Tenofovir Impurity 76 Tenofovir Impurity 76
Ticagrelor Impurity 125 Ticagrelor Impurity 125
Ticagrelor Impurity 39 Ticagrelor Impurity 39
Tofacitinib Impurity 109 Tofacitinib Impurity 109
Tofacitinib Impurity 114 Tofacitinib Impurity 114
Vildagliptin Impurity 34 Vildagliptin Impurity 34 1824265-77-1 C10H17NO3
1-(3-(benzyloxy)-5-hydroxyphenyl)-2-(tert-butylamino)ethan-1-one 1-(3-(benzyloxy)-5-hydroxyphenyl)-2-(tert-butylamino)ethan-1-one 2459974-72-0 C19H23NO3
Demeclocycline EP Impurity C Demeclocycline EP Impurity C 129044-45-7 C21H22N2O8
Brimonidine Impurity D Brimonidine Impurity D
1,3-bis(2-chloroethyl)benzimidazolin-2-one 1,3-bis(2-chloroethyl)benzimidazolin-2-one 55470-74-1 C11H12Cl2N2O
Nintedanib Impurity A (Intedanib Impurity A ） Nintedanib Impurity A (Intedanib Impurity A ）
Tigecycline Impurity 6 Tigecycline Impurity 6
Febuxostat Bromo Impurity Febuxostat Bromo Impurity 144060-40-2 C15H16BrNO3S
Meptazinol Impurity Meptazinol Impurity 1314003-47-8 C23H28N2O4
1'H-2,3'-bipyridinyl-2'-one 1'H-2,3'-bipyridinyl-2'-one 101002-01-1 C10H8N2O
Brexpiprazole Impurity D Brexpiprazole Impurity D
Brivaracetam Impurity E Brivaracetam Impurity E
Esmolol impurity D Esmolol impurity D
Diquafosol Impurity D Diquafosol Impurity D
Afatinib Impurity 10 Afatinib Impurity 10
Peramivir Impurity 11 Peramivir Impurity 11
Vildagliptin Impurity 6 Vildagliptin Impurity 6
Sunitinib Impurity 1 Sunitinib Impurity 1
Erlotinib Impurity 18 Erlotinib Impurity 18
Fasudil Impurity 6 Fasudil Impurity 6 1581642-06-9 C14H18ClN3O2S
Rosuvastatin Impurity 56 Rosuvastatin Impurity 56
Dapoxetine Impurity 4 Dapoxetine Impurity 4
Ticagrelor Impurity 17 Ticagrelor Impurity 17
Empagliflozin Impurity 13 Empagliflozin Impurity 13
Moxifloxacin Impurity 2 Moxifloxacin Impurity 2
Cabozantinib Impurity 1 Cabozantinib Impurity 1
Febuxostat Impurity 56 Febuxostat Impurity 56
Acyclovir Impurity 1 Acyclovir Impurity 1
Ambroxol Impurity 9 HCl Ambroxol Impurity 9 HCl
Penicillin Impurity A Penicillin Impurity A
Cefminox Sodium impurity A Cefminox Sodium impurity A
Cefotiam Impurity A Cefotiam Impurity A
pranoprofen impurity 25 pranoprofen impurity 25
Flavomarein，2R-3',4',8-Trihydroxyflavanone-7-O-glucoside Flavomarein，2R-3',4',8-Trihydroxyflavanone-7-O-glucoside 56389-87-8 C21H22O11
Peramivir Impurity D Peramivir Impurity D
Lincomycin sulfoxide Impurity 2 Lincomycin sulfoxide Impurity 2
Lincomycin sulfoxide Impurity E Lincomycin sulfoxide Impurity E
Fasudil iMpurity E Fasudil iMpurity E
(+/-)-EPINEPHRINE SULFONIC ACID (+/-)-EPINEPHRINE SULFONIC ACID 26405-77-6 C9H13NO5S
GADOTERIDOL RELATED COMPOUND B (50 MG) (1,4,7,10-TETRAAZACYCLODODECANE-1,4,7-TRIACETIC ACID, MONOGADOLINIUM SALT) GADOTERIDOL RELATED COMPOUND B (50 MG) (1,4,7,10-TETRAAZACYCLODODECANE-1,4,7-TRIACETIC ACID, MONOGADOLINIUM SALT) 112188-16-6 C14H22GdN4O6
Dapoxetine Impurity 8 Dapoxetine Impurity 8
Irbesartan Impurity 6 Irbesartan Impurity 6 C25H28N6O
Empagliflozin impurity B Empagliflozin impurity B
Varenicline Impurity 1 Varenicline Impurity 1
Voriconazole Impurity 6 Voriconazole Impurity 6
Caspofungin impurity 1 Caspofungin impurity 1
Cabozantinib impurity D Cabozantinib impurity D
Neratinib Impurity 3 Neratinib Impurity 3
Ranitidine Impurity D Ranitidine Impurity D C13H22N4O3S
Metoprolol IMpurity 5 Metoprolol IMpurity 5 C15H25NO3
Mirabegron Impurity 2 Mirabegron Impurity 2
Pemetrexed Impurity 1 Pemetrexed Impurity 1 1644287-26-2 C20H21N5O8
Plerixafor Impurity B Plerixafor Impurity B
Tolvaptan impurity3 Tolvaptan impurity3
Vonoprazan Impurity 7 Vonoprazan Impurity 7
Cefazolin impurity F Cefazolin impurity F
Apremilast Impurity 3 Apremilast Impurity 3 88687-92-7 C16H10N2O8
Apixaban Impurity 8 Apixaban Impurity 8 1777781-49-3 C24H23N5O4
Ritodrine BP Impurity D Ritodrine BP Impurity D
Rivaroxaban Impurity 19 Rivaroxaban Impurity 19
Topiroxostat Impurity 4 Topiroxostat Impurity 4 1379342-46-7 C8H8N2O3
Ertapenem impurity 1 Ertapenem impurity 1
(R)-2-(3-(diisopropylamino)-1-phenylpropyl)-4-(hydroxymethyl)phenyl methacrylate (R)-2-(3-(diisopropylamino)-1-phenylpropyl)-4-(hydroxymethyl)phenyl methacrylate C26H36NO3
Flomoxef Impurity 3 Flomoxef Impurity 3
Ropivacaine impurity Ropivacaine impurity 1105704-96-8 C12H14N2O3
Agomelatine Impurity 1 Agomelatine Impurity 1 1352139-51-5 C15H19NO2
Diquafosol Impurity 1 Diquafosol Impurity 1 26184-65-6 C18H24N4O17P2
Milnacipran Impurity 3 Milnacipran Impurity 3 1353644-50-4 C15H20ClNO
L-Glutamic acid 1-ethyl ester L-Glutamic acid 1-ethyl ester 52454-78-1 C7H13NO4
Methyl 2-Hydroxy-2-(Thiophen-2-Yl)-2-(Thiophen-3-Yl)Acetate Methyl 2-Hydroxy-2-(Thiophen-2-Yl)-2-(Thiophen-3-Yl)Acetate 28748-67-6 C11H10O3S2
6,7-Dihydro-N-methyl-N-[(3R,4R)-4-methyl-3-piperidinyl]-5H-pyrrolo[2,3-d]pyrimidin-4-amine 6,7-Dihydro-N-methyl-N-[(3R,4R)-4-methyl-3-piperidinyl]-5H-pyrrolo[2,3-d]pyrimidin-4-amine 1812890-23-5 C13H21N5
Sacubitril Impurity 72 Sacubitril Impurity 72 1361408-16-3 C23H27NO4
(1R,2S,3R)-Aprepitant (1R,2S,3R)-Aprepitant 1185502-97-9 C23H21F7N4O3
Clemastine Clemastine 108825-05-4 C21H26ClNO2
4-chloro-7-methoxyquinoline-6-carboxylic acid 4-chloro-7-methoxyquinoline-6-carboxylic acid 771464-30-3 C11H8ClNO3
ethyl (41S,13aR)-13a-ethyl-2,3,41,5,6,13a-hexahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate ethyl (41S,13aR)-13a-ethyl-2,3,41,5,6,13a-hexahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate 85647-43-4 C22H26N2O2
methyl (41R,12R,13aR)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate methyl (41R,12R,13aR)-13a-ethyl-12-hydroxy-2,3,41,5,6,12,13,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate 38990-16-8 C21H26N2O3
Dolutegravir Impurity 3 Dolutegravir Impurity 3 1973402-05-9 C20H19F2N3O5
Cistracurium Besylate EP Impurity D Cistracurium Besylate EP Impurity D 1075726-88-3 C31H39NO9S
(R)-1-[3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-3-chloropropan-1-one (R)-1-[3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-3-chloropropan-1-one 1288338-96-4 C25H25ClN6O2
Bendamustine Impurity 8 Bendamustine Impurity 8 1797881-48-1 C14H19Cl2N3O2
FeBuxostat Impurity 32 FeBuxostat Impurity 32 1805770-41-5 C12H12N2O
Edoxaban Impurity 9(1R,2S,4S) Edoxaban Impurity 9(1R,2S,4S) 2024614-15-9 C21H30ClN5O5
Rivaroxaban Impurity 22 Rivaroxaban Impurity 22 1350288-77-5 C19H18ClN3O5S
Rivaroxaban Impurity 27 Rivaroxaban Impurity 27 1369969-44-7 C21H21N3O5
Abiraterone Impurity 9 Abiraterone Impurity 9 165334-72-5 C24H31NO
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