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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Aztreonam Impurity 6 Aztreonam Impurity 6
Clarithromycin Impurity EP G Clarithromycin Impurity EP G 107216-09-1 C39H72N2O13
Dapagliflozin Impurity 32 Dapagliflozin Impurity 32
Doxofylline Impurity 7 Doxofylline Impurity 7 43135-57-5 C13H20N4O4
Erlotinib Impurity 55 Erlotinib Impurity 55
Etoposide Impurity 1 Etoposide Impurity 1
Etoposide Impurity 6 Etoposide Impurity 6
Olaparib Impurity 34 Olaparib Impurity 34 2795135-26-9
Oseltamivir Impurity 15 Oseltamivir Impurity 15 2254819-34-4 C22H36N2O4
Oseltamivir Impurity 27 Oseltamivir Impurity 27
Pitavastatin Impurity 20 Pitavastatin Impurity 20
Rocuronium Bromide Impurity 20 Rocuronium Bromide Impurity 20
Rocuronium Bromide Impurity 9 Rocuronium Bromide Impurity 9
Verapamil Impurity N Verapamil Impurity N 2086274-75-9 C33H47N3O4
Ergoline-8-carboxylic acid, 2-bromo-9,10-didehydro-6-methyl-, (8β)- Ergoline-8-carboxylic acid, 2-bromo-9,10-didehydro-6-methyl-, (8β)- 478-83-1 C16H15BrN2O2
Adefovir Impurity 6 Adefovir Impurity 6
Apremilast Impurity QY Apremilast Impurity QY
Dextrorotation lansoprazole Impurity J Dextrorotation lansoprazole Impurity J
Dextrorotation lansoprazole-N-oxide Dextrorotation lansoprazole-N-oxide
lansoprazole Impurity 23 lansoprazole Impurity 23
lansoprazole Impurity 29 lansoprazole Impurity 29
Loratadine Impurity L Loratadine Impurity L C22H23ClN2O2
meta-dyhydroxy Sugammadex sodium Impurity 1 meta-dyhydroxy Sugammadex sodium Impurity 1
Olanzapine impurity R Olanzapine impurity R C17H20N4S
Palbociclib Impurity 33 Palbociclib Impurity 33
Pramipexole Related Impurity 1 Pramipexole Related Impurity 1
Ropivacaine Impurity 37 Ropivacaine Impurity 37
Ropivacaine Impurity 42 Ropivacaine Impurity 42
Sugammadex sodium Org197339-1 Impurity Sugammadex sodium Org197339-1 Impurity
Fludarabine EP impurity G Fludarabine EP impurity G 548774-56-7 C10H12ClFN5O6P
Sitagliptin Impurity 12 Sitagliptin Impurity 12 1803026-54-1 C16H12F6N4O
Afatinib impurity 30 Afatinib impurity 30
Avibactam Impurity 45 Avibactam Impurity 45 2064219-20-9 C23H46N4O6S
Butyphthalide impurity 44 Butyphthalide impurity 44 952413-01-3 C13H18O3
Cabozantinib impurity 24 Cabozantinib impurity 24
Celecoxib Impurity 18 Celecoxib Impurity 18 2271123-54-5 C11H9F3O2
Dapoxetine impurity 22 Dapoxetine impurity 22
Febuxostat Impurity 85 Febuxostat Impurity 85
Fosaprepitant Impurity NLS Fosaprepitant Impurity NLS
Irinotecan Impurity 17 HCl Irinotecan Impurity 17 HCl 1332610-75-9 C19H14N2O4
LCZ696(valsartan + sacubitril) impurity 31 LCZ696(valsartan + sacubitril) impurity 31
Lenvatinib Impurity 24 Lenvatinib Impurity 24
Lenvatinib Impurity 30 Lenvatinib Impurity 30
Regorafenib Impurity 22 Regorafenib Impurity 22
Regorafenib Impurity 28 Regorafenib Impurity 28
Sitafloxacin Impurity ZZ-C-01 Sitafloxacin Impurity ZZ-C-01
Tofacitinib Impurity 85 Tofacitinib Impurity 85 2268720-86-9 C20H24ClN5
Tofacitinib Impurity 90 Tofacitinib Impurity 90
Nintedanib Impurity M Nintedanib Impurity M
Citalopram Impurity 14 Citalopram Impurity 14 1470362-85-6 C20H23FN2O2
Eltrombopag Impurity 8 Eltrombopag Impurity 8
Vitexin 2''-O-beta-D-glucoside Vitexin 2''-O-beta-D-glucoside 61360-94-9 C27H30O15
(S)-methyl 2-(2,3-bis(hydroxymethyl)-6,7-dihydrothieno[3,2-c] pyridin-5(4H)-yl)-2-(2-chlorophenyl)acetate (S)-methyl 2-(2,3-bis(hydroxymethyl)-6,7-dihydrothieno[3,2-c] pyridin-5(4H)-yl)-2-(2-chlorophenyl)acetate 1346231-36-4 C18H20ClNO4S
Capecitabine impurity 6 Capecitabine impurity 6
Vilanterol Impurity 25 Vilanterol Impurity 25 1027529-99-2 C13H15NO4
Sugammadex sodium Org139131-1 Impurity Sugammadex sodium Org139131-1 Impurity
Dolutegravir Impurity 16 Dolutegravir Impurity 16 1357289-37-2 C20H19F2N3O5
N - hydroxy Tropisetron Impurity 2 N - hydroxy Tropisetron Impurity 2
Tofacitinib Impurity 98 Tofacitinib Impurity 98
Cabozantinib impurity 30 Cabozantinib impurity 30 2840522-81-6 C35H30N4O7
Cabozantinib impurity 35 Cabozantinib impurity 35 1905820-17-8 C17H14F2N2O2
Carvedilol Impurity DBA Carvedilol Impurity DBA 3258-70-6 C18H23NO4
Pregabalin Impurity 9 Pregabalin Impurity 9 44855-96-1 C5H7NO3
Butyphthalide impurity 50 Butyphthalide impurity 50
Canagliflozin Impurity 40 Canagliflozin Impurity 40
Pralatrexate Impurity 4 Pralatrexate Impurity 4 1445586-42-4 C18H15N5O3
Pralatrexate Impurity 9 Pralatrexate Impurity 9 1548618-61-6 C23H22N6O6
Pitavastatin Impurity 47 Pitavastatin Impurity 47
Lenvatinib Impurity 38 Lenvatinib Impurity 38
Tazobactam Impurity 9 Tazobactam Impurity 9
Doxofylline Impurity 11 Doxofylline Impurity 11 109403-76-1 C15H16N8O4
Doxofylline Impurity 14 Doxofylline Impurity 14
Canagliflozin Impurity 56 Canagliflozin Impurity 56
Canagliflozin Impurity 61 Canagliflozin Impurity 61
Tofacitinib Impurity 107 Tofacitinib Impurity 107
Hydroxychloroquine Impurity K Hydroxychloroquine Impurity K
Levosimendan Impurity 8 Levosimendan Impurity 8 274263-65-9 C14H14N6O2
Cabozantinib impurity R Cabozantinib impurity R
Rotigotine Impurity 4 Rotigotine Impurity 4
Crisaborole Impurity 4 Crisaborole Impurity 4
Crisaborole Impurity 9 Crisaborole Impurity 9
Trifluridine Impurity C Trifluridine Impurity C
Olprinone Impurity 3 Olprinone Impurity 3 1402751-73-8 C14H11N3O3
Olprinone Impurity 8 Olprinone Impurity 8
(R)-9-fluoro-3-methyl-7-oxo-10-(piperazin-1-yl)-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid hydrochloride (R)-9-fluoro-3-methyl-7-oxo-10-(piperazin-1-yl)-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid hydrochloride 117707-39-8 C17H18FN3O4
Nicorandil Impurity G Nicorandil Impurity G
Bivalirudin Impurity 3 Bivalirudin Impurity 3 1310025-28-5 C98H138N24O33
Cilastatin Impurity 3 Cilastatin Impurity 3
Solifenacin Impurity 7（Solifenacin EP Impurity D） Solifenacin Impurity 7（Solifenacin EP Impurity D） 2216750-52-4 C31H28N2O
Dyclonine Impurity 2 Dyclonine Impurity 2 66536-15-0 C13H16O2
Cefuroxime Impurity 33 Cefuroxime Impurity 33 929531-94-2 C16H16N4O9S
Ondansetron IMpurity 4 Ondansetron IMpurity 4
MeropeneM iMpurity 3 MeropeneM iMpurity 3
MeropeneM iMpurity 8 MeropeneM iMpurity 8
Metronidazole Impurity 13 Metronidazole Impurity 13 110578-73-9 C6H9N3O3
Eletriptan Impurity 4 Eletriptan Impurity 4 1422285-51-5 C44H50N4O4S2
Afatinib Impurity 51 Afatinib Impurity 51
Afatinib Impurity 51 Afatinib Impurity 51
Afatinib Impurity 66 Afatinib Impurity 66
Afatinib Impurity 66 Afatinib Impurity 66
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