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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Ticagrelor IMpurity E Ticagrelor IMpurity E 1402150-34-8 C26H30F2N6O5S
Benzenebutanoicacid,b-[[(1,1-diMethylethoxy)carbonyl]aMino]-2,4,5-trifluoro-,Methylester,(bR)- Benzenebutanoicacid,b-[[(1,1-diMethylethoxy)carbonyl]aMino]-2,4,5-trifluoro-,Methylester,(bR)- 881995-73-9 C16H20F3NO4
Bosutinib Impurity 1 Bosutinib Impurity 1 1460227-29-5 C18H13Cl2N3O3
tert-butyl 4-cyclohexylpiperazine-1-carboxylate tert-butyl 4-cyclohexylpiperazine-1-carboxylate 1224935-95-8 C15H28N2O2
Afatinib IMpurity D Afatinib IMpurity D
Afatinib IMpurity D Afatinib IMpurity D
Avanafil iMpurity 1 Avanafil iMpurity 1 372117-54-9 C18H22ClN5O3
Bisoprolol EP IMpurity B HeMifuMarate (Bisoprolol n-Propyl Derivative HeMifuMarate) Bisoprolol EP IMpurity B HeMifuMarate (Bisoprolol n-Propyl Derivative HeMifuMarate) 1447715-44-7 C18H31NO4
Dabigatran iMpurity F Dabigatran iMpurity F 1642853-67-5 C19H20N4O4
Decitabine iMpurity 4 Decitabine iMpurity 4 863396-35-4 C6H12O4
Gliclazide iMpurity D Gliclazide iMpurity D 1136426-19-1 C15H20N2O3S
Losartan IMpurity C (Isolosartan) Losartan IMpurity C (Isolosartan) 114799-13-2 C22H23ClN6O
Posaconazole DiastereoisoMer interMediate 2 Posaconazole DiastereoisoMer interMediate 2 166583-12-6 C21H21F2N3O4S
Quetiapine IMpurity P (11-(4-Ethylpiperazin-1-yl)dibenzo[b,f][1,4]thiazepine fuMarate)) Quetiapine IMpurity P (11-(4-Ethylpiperazin-1-yl)dibenzo[b,f][1,4]thiazepine fuMarate)) 1011758-03-4 C19H21N3S
TaMsulosin IMpurity B TaMsulosin IMpurity B C20H28N2O5S
Ticagrelor iMpurity N Ticagrelor iMpurity N
Tirofiban IMpurity (4,4'-Dipyridyl-1,5-Pentane) Tirofiban IMpurity (4,4'-Dipyridyl-1,5-Pentane) 25382-33-6 C15H18N2
3-Quinolinecarbonitrile,4-chloro-6-Methoxy-7-[3-(4-Methyl-1-piperazinyl)propoxy]- 3-Quinolinecarbonitrile,4-chloro-6-Methoxy-7-[3-(4-Methyl-1-piperazinyl)propoxy]- 492444-39-0 C19H23ClN4O2
Vardenafil Oxopiperazine (IMpurity) Vardenafil Oxopiperazine (IMpurity) 448184-58-5 C21H26N6O5S
IverMectin B1 Aglycon IverMectin B1 Aglycon 73162-95-5 C34H50O8
9α-BroMobudesonide 9α-BroMobudesonide 313474-59-8 C25H33BrO6
N-(5-Chloro-2-pyridinyl)-2-pyrazinecarboxaMide (Zopiclone IMpurity) N-(5-Chloro-2-pyridinyl)-2-pyrazinecarboxaMide (Zopiclone IMpurity) 349125-10-6 C10H7ClN4O
2-Methyl SiMvastatin (Mixture Of DiasteroisoMers) 2-Methyl SiMvastatin (Mixture Of DiasteroisoMers) 774611-54-0 C26H40O5
(4-Chloro-3,5-diMethylpyridin-2-yl)Methanol Hydrochloride (4-Chloro-3,5-diMethylpyridin-2-yl)Methanol Hydrochloride 143016-70-0 C8H11Cl2NO
AMoxicillin DiMer (penicilloic acid forM) AMoxicillin DiMer (penicilloic acid forM) 210289-72-8 C32H40N6O11S2
AMoxicillin DiMer (penicilloic acid forM) AMoxicillin DiMer (penicilloic acid forM) 210289-72-8 C32H40N6O11S2
Desacetyl-7-ACA Lactone Desacetyl-7-ACA Lactone 184696-69-3 C8H8N2O3S
5,6-DiMethoxy-2-[(4-piperidyl)Methyl]indane Hydrochloride (Donepezil IMpurity) 5,6-DiMethoxy-2-[(4-piperidyl)Methyl]indane Hydrochloride (Donepezil IMpurity) 1034439-43-4 C17H26ClNO2
CarfilzoMib IMpurity CarfilzoMib IMpurity 1541171-65-6 C41H61N5O10S
Atracurium Impurity R Atracurium Impurity R
Fludarabine EP impurity K Fludarabine EP impurity K
Ropivacaine Impurity 28 Ropivacaine Impurity 28
Ropivacaine Impurity 6 Ropivacaine Impurity 6
Solifenacin ring opening Impurity 11 Solifenacin ring opening Impurity 11
Sugammadex sodium Org210839-1 Impurity Sugammadex sodium Org210839-1 Impurity
Sugammadex sodium Org284426-1 Impurity Sugammadex sodium Org284426-1 Impurity
Bendamustine Related Impurity 6 Bendamustine Related Impurity 6
Butyphthalide impurity 39 Butyphthalide impurity 39 1841089-57-3 C24H28O4
Butyphthalide impurity 45 Butyphthalide impurity 45
Dapoxetine impurity 18 Dapoxetine impurity 18
Febuxostat Impurity 76 Febuxostat Impurity 76
Febuxostat Impurity 91 Febuxostat Impurity 91
Ipratropium Bromide Impurity 1 Ipratropium Bromide Impurity 1 C20H29Br2NO3
Lenvatinib Impurity 18 Lenvatinib Impurity 18
Moxifloxacin Impurity 44 Moxifloxacin Impurity 44 1048972-52-6 C14H12FNO5
Nintedanib Impurity 32 Nintedanib Impurity 32
Olsalazine Impurity C Olsalazine Impurity C
Parecoxib sodium Impurity 33 Parecoxib sodium Impurity 33
Tofacitinib Impurity 96 Tofacitinib Impurity 96
Vildagliptin Impurity ZA5 Vildagliptin Impurity ZA5
Linagliptin Impurity CD10925 Linagliptin Impurity CD10925
Nintedanib Impurity N Nintedanib Impurity N
(2R,3R,4R,5S,6S)-2-(acetoxymethyl)-6-(4-chloro-3-(4- hydroxybenzyl)phenyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate (2R,3R,4R,5S,6S)-2-(acetoxymethyl)-6-(4-chloro-3-(4- hydroxybenzyl)phenyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate 1079083-63-8 C27H29ClO10
Vildagliptin Impurity 25 Vildagliptin Impurity 25 1563006-28-9 C7H10N2O2
(2R,3R,4R,5S,6S)-2-(acetoxymethyl)-6-(4-chloro-3- (4-methoxybenzyl)phenyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate (2R,3R,4R,5S,6S)-2-(acetoxymethyl)-6-(4-chloro-3- (4-methoxybenzyl)phenyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate 872980-38-6 C28H31ClO10
Vinorelbine Impurity DX Vinorelbine Impurity DX 89368-94-5 C46H55BrN4O8
1-hydroxypropan-2-yl 2-(2-(4-((4-chlorophenyl)(phenyl) methyl)piperazin-1-yl)ethoxy)acetate compound with 2- hydroxypropyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl) piperazin-1-yl)ethoxy)acetate (1:1) hydrochloride 1-hydroxypropan-2-yl 2-(2-(4-((4-chlorophenyl)(phenyl) methyl)piperazin-1-yl)ethoxy)acetate compound with 2- hydroxypropyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl) piperazin-1-yl)ethoxy)acetate (1:1) hydrochloride
Eltrombopag Impurity 2 Eltrombopag Impurity 2
Dapoxetine Impurity 17 Dapoxetine Impurity 17
Avibactam Impurity Avibactam Impurity 2064219-26-5 C7H12N3NaO6S
(1s,4s)-4-((2-aminobenzyl)amino)cyclohexan-1-ol hydrochloride (1s,4s)-4-((2-aminobenzyl)amino)cyclohexan-1-ol hydrochloride C13H21ClN2O
Solifenacin impurity 23 Solifenacin impurity 23
Edaravone impurity DEE Edaravone impurity DEE
Linagliptin Impurity 49 Linagliptin Impurity 49
(1r,4r)-4-(7,9-dibromo-2,3-dihydro-1H-benzo[e][1,4]diazepin-4(5H)-yl)cyclohexanol hydrochloride (1r,4r)-4-(7,9-dibromo-2,3-dihydro-1H-benzo[e][1,4]diazepin-4(5H)-yl)cyclohexanol hydrochloride 2376577-10-3 C15H21Br2ClN2O
Procatero Impurity Procatero Impurity 90098-93-4 C11H9NO3
4-((2-amino-3,5-dibromobenzyl)amino)cyclohexanone hydrochloride 4-((2-amino-3,5-dibromobenzyl)amino)cyclohexanone hydrochloride C13H17Br2ClN2O
Pazufloxacin Impurity 5 Pazufloxacin Impurity 5 777824-29-0 C15H15FN2O2
Vonoprazan Impurity Z-4 Vonoprazan Impurity Z-4
Olanzapine impurity O Olanzapine impurity O C17H20N4S
Cabozantinib impurity 26 Cabozantinib impurity 26 2840522-80-5 C28H25ClFN3O5
Afatinib impurity 45 Afatinib impurity 45 99281-87-5 C5H9NO2
Afatinib impurity 45 Afatinib impurity 45 99281-87-5 C5H9NO2
Dapoxetine impurity 24 Dapoxetine impurity 24 1445281-20-8 C20H20O4S
Tazobactam Impurity E Tazobactam Impurity E
Vildagliptin Impurity 42 Vildagliptin Impurity 42
Canagliflozin Impurity 45 Canagliflozin Impurity 45
Pralatrexate Impurity 5 Pralatrexate Impurity 5
Pitavastatin Impurity 61 Pitavastatin Impurity 61
Sitafloxacin Impurity 17 Sitafloxacin Impurity 17
Cilastatin Isomer Impurity Cilastatin Isomer Impurity
Prednicarbate Impurity E Prednicarbate Impurity E
Olprinone Impurity B Olprinone Impurity B
Atracurium Impurity 28 Atracurium Impurity 28
Canagliflozin Impurity 51 Canagliflozin Impurity 51
Canagliflozin Impurity 67 Canagliflozin Impurity 67
Cefazolin Impurity Q Cefazolin Impurity Q
Acyclovir Impurity 13 Acyclovir Impurity 13
Afatinib impurity 48 Afatinib impurity 48
Afatinib impurity 48 Afatinib impurity 48
Cabozantinib impurity M Cabozantinib impurity M
Rotigotine Impurity 8 Rotigotine Impurity 8
Palbociclib-025 Palbociclib-025 2174002-16-3 C25H29N7O3
Nitrendipine iMpurity 3 Nitrendipine iMpurity 3
Cefminox Impurity 3 Cefminox Impurity 3
Afatinib Impurity 57 Afatinib Impurity 57
Afatinib Impurity 57 Afatinib Impurity 57
Apremilast Impurity 34 Apremilast Impurity 34 2469037-82-7 C20H20N2O7S
Aprepitant Impurity 35 Aprepitant Impurity 35
Bosutinib Impurity 15 Bosutinib Impurity 15
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