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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Alogliptin Impurity 17 Alogliptin Impurity 17
Aprepitant Impurity 15 Aprepitant Impurity 15 1447693-83-5 C20H19ClF7NO2
Betamethasone EP Impurity H Betamethasone EP Impurity H 185613-71-2 C22H29FO5
Blonanserin Impurity 10 Blonanserin Impurity 10 132810-87-8 C23H30ClN3
Blonanserin impurity G Blonanserin impurity G
Cefodizime Impurity 5 Cefodizime Impurity 5
Clindamycin Impurity 4 Clindamycin Impurity 4
Doxofylline Impurity 4 Doxofylline Impurity 4 2095554-12-2 C11H16N4O5
Eltrombopag Impurity 1 Eltrombopag Impurity 1 1246929-02-1 C25H23N5O3
Everolimus impurity A Everolimus impurity A
Fosaprepitant Impurity 13 Fosaprepitant Impurity 13
Gefitinib Impurity J Gefitinib Impurity J
Isavuconazole Impurity 23 Isavuconazole Impurity 23
Isavuconazole Impurity 29 Isavuconazole Impurity 29
Isavuconazole Impurity 7 Isavuconazole Impurity 7
Lercanidipine Impurity 6 Lercanidipine Impurity 6 786625-22-7 C37H43N3O6
Linagliptin Impurity 43 Linagliptin Impurity 43
MiraBegron Impurity A MiraBegron Impurity A
Moxifloxacin Impurity 15 Moxifloxacin Impurity 15
Moxifloxacin Impurity 32 Moxifloxacin Impurity 32
Nifedipine Impurity F Nifedipine Impurity F 53055-15-5 C18H20N2O6
Olaparib Impurity 15 Olaparib Impurity 15 2250243-17-3 C24H25FN4O3
Olopatadine Impurity 4 Olopatadine Impurity 4 55690-15-8 C18H18O5
Posaconazole Impurity 26 Posaconazole Impurity 26
Posaconazole Impurity 48 Posaconazole Impurity 48 1902954-03-3 C37H42F2N8O5
Posaconazole Impurity 9 Posaconazole Impurity 9
Roxithromycin Impurity E Roxithromycin Impurity E
SofosBuvir impurity 48 SofosBuvir impurity 48
SofosBuvir Impurity 54 SofosBuvir Impurity 54 1431932-81-8 C12H17ClNO4P
Timolol EP Impurity G Timolol EP Impurity G 75202-36-7 C6H9N3O3S
Tofacitinib Impurity 44 Tofacitinib Impurity 44 2374700-39-5 C13H19N5
Trelagliptin Impurity 24 Trelagliptin Impurity 24
dimethyl 3- isobutylpentanedioate dimethyl 3- isobutylpentanedioate 145328-03-6 C11H20O4
Phenol, 4-chloro-3-[(4-ethoxyphenyl)methyl]- Phenol, 4-chloro-3-[(4-ethoxyphenyl)methyl]- 1408077-50-8 C15H15ClO2
2-amino-9-((3aS,4S,6S,6aR)-3a,6-dihydroxyhexahydro-1H-cyclopenta[c]furan-4-yl)-1,9-dihydro-6H-purin-6-one 2-amino-9-((3aS,4S,6S,6aR)-3a,6-dihydroxyhexahydro-1H-cyclopenta[c]furan-4-yl)-1,9-dihydro-6H-purin-6-one 1984788-96-6 C12H15N5O4
Ampicillin Impurity C Ampicillin Impurity C
Ampicillin Impurity O Ampicillin Impurity O
mixture of PD 312236 and PD 312237 mixture of PD 312236 and PD 312237
Axitinib Impurity 27 Axitinib Impurity 27 1639137-80-6 C24H20N4O2S
(4R,5R,6S)-4-nitrobenzyl 6-((R)-1-hydroxyethyl)-4-methyl-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylate (4R,5R,6S)-4-nitrobenzyl 6-((R)-1-hydroxyethyl)-4-methyl-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylate 104873-15-6 C17H18N2O7
Lesinurad Impurity Lesinurad Impurity
Chrysophanol triglucoside Chrysophanol triglucoside 120181-07-9 C33H40O19
7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-(5-chloro-2-ethoxyphenyl)-1,6-dihydro-1-methyl-3-propyl- 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-(5-chloro-2-ethoxyphenyl)-1,6-dihydro-1-methyl-3-propyl- 1829588-57-9 C17H19ClN4O2
Cefminox sodium impurities Ⅲ Cefminox sodium impurities Ⅲ
Canagliflozin Impurity 18 Canagliflozin Impurity 18 1951467-29-0 C24H25FO6S
Fosaprepitant Impurity 6 Fosaprepitant Impurity 6 327623-34-7 C21H19F6NO3
Ivabradine Impurity 16 HCl Ivabradine Impurity 16 HCl 304464-98-0 C26H34N2O5
Moxifloxacin EP Impurity A HCl Moxifloxacin EP Impurity A HCl
Paroxetine EP Impurity H HCl Paroxetine EP Impurity H HCl 503834-41-1 C19H23ClFNO
Solifenacin Related Compound 13 Solifenacin Related Compound 13 1251905-45-9 C17H17NO2
1-(3-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboximidamide 1-(3-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboximidamide 2101651-50-5 C14H12FN5
N1-(4-chlorophenyl)-3,12-diimino-N14-phenyl-2,4,11,13-Tetraazatetradecanediimidamide N1-(4-chlorophenyl)-3,12-diimino-N14-phenyl-2,4,11,13-Tetraazatetradecanediimidamide 152504-12-6 C22H31ClN10
Ethylmethyl-carbamic chloride Ethylmethyl-carbamic chloride 42252-34-6 C4H8ClNO
Cisatracurium-20-methyl Dibenzenesulfonate Cisatracurium-20-methyl Dibenzenesulfonate 1193104-85-6 C60H79N2O15S+
[R-(R*,S*)]-(-)-N-(1-PHENYLETHYL)-1-AZABICYCLO[2.2.2]OCTAN-3-AMINE DIHYDROCHLORIDE [R-(R*,S*)]-(-)-N-(1-PHENYLETHYL)-1-AZABICYCLO[2.2.2]OCTAN-3-AMINE DIHYDROCHLORIDE 128311-06-8 C15H24Cl2N2
GURKHSYORGJETM-MGDILKBHSA-N GURKHSYORGJETM-MGDILKBHSA-N 1992961-26-8 C33H39ClN4O6
DVCUGHHGLKCBMT-QVDQXJPCSA-N DVCUGHHGLKCBMT-QVDQXJPCSA-N 1356353-76-8 C15H24N6O6
5,6-Dehydro-Tigecycline 5,6-Dehydro-Tigecycline 1633815-62-9 C29H37N5O8
N-Depiperidin-3-amine Linagliptin Dimer N-Depiperidin-3-amine Linagliptin Dimer 2253964-98-4 C45H44N14O4
(1R,5R,6S)-5-Hydroxy-7-oxabicyclo[4.1.0]hept-2-ene-3-carboxylic Acid Ethyl Ester (1R,5R,6S)-5-Hydroxy-7-oxabicyclo[4.1.0]hept-2-ene-3-carboxylic Acid Ethyl Ester 1476028-68-8 C9H12O4
(8S,11S,Z)-5-(2-Aminothiazol-4-yl)-11-(3-guanidinopropyl)-2,2-dimethyl-6,9-dioxo-8-((S)-1-(sulfoamino)ethyl)-3-oxa-4,7,10-triazadodec-4-ene-1,12-dioic Acid (8S,11S,Z)-5-(2-Aminothiazol-4-yl)-11-(3-guanidinopropyl)-2,2-dimethyl-6,9-dioxo-8-((S)-1-(sulfoamino)ethyl)-3-oxa-4,7,10-triazadodec-4-ene-1,12-dioic Acid C19H31N9O10S2
Brepperazole impurity Brepperazole impurity
Mupirocin iMpurity 4 Mupirocin iMpurity 4 C26H44O9
Tenofovirdisoproxil Impurity C Tenofovirdisoproxil Impurity C 1878175-82-6 C11H17N5O2
Cytarabine Impurity 13 Cytarabine Impurity 13 82855-62-7 C17H19N5O8
2052297-80-8 2052297-80-8 2052297-80-8 C12H21NO3
Pramipexole Impurity L Pramipexole Impurity L
1020151-61-4 1020151-61-4 1020151-61-4 C14H23ClO3S
Nicergoline Impurity M Nicergoline Impurity M
Apixaban Impurity 48 Apixaban Impurity 48
ethyl 2-(4-(tert-butoxy)-3-cyanophenyl)-4-methylthiazole-5- carboxylate ethyl 2-(4-(tert-butoxy)-3-cyanophenyl)-4-methylthiazole-5- carboxylate C18H20N2O3S
(trans)-phenyl 3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4'-fluoro- [1,1'-biphenyl]-4-yl)piperidine-1-carboxylate (trans)-phenyl 3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4'-fluoro- [1,1'-biphenyl]-4-yl)piperidine-1-carboxylate C32H28FNO5
Moxifloxacin Impurity 9 Moxifloxacin Impurity 9
Ticagrelor Impurity 10 Ticagrelor Impurity 10
Tofacitinib Impurity O Tofacitinib Impurity O
Celecoxib Impurity 5 Celecoxib Impurity 5 C17H14F3N3O2S
Prasugrel Impurity 10 Prasugrel Impurity 10
Amlodipine N-Lactoside Amlodipine N-Lactoside 749864-27-5 C32H45ClN2O15
Sugammadex Impurity 19 Sugammadex Impurity 19 2379877-89-9
Apixaban Impurity 29 Apixaban Impurity 29
Alogliptin Impurity 22 Alogliptin Impurity 22
Ritonavir Impurity Ritonavir Impurity 1414933-89-3 C23H32N2O3
Riociguat Impurity 7 Riociguat Impurity 7
Tacrolimus Impurity 5 Tacrolimus Impurity 5 161861-18-3 C44H67NO12
monocalciummono(4-(((2S,4R)-1-([1,1'-biphenyl]-4-yl)-5- methoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate) monocalciummono(4-(((2S,4R)-1-([1,1'-biphenyl]-4-yl)-5- methoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate) C23H26CaNO5
Aprepitant iMpurity 38 Aprepitant iMpurity 38
Aprepitant iMpurity 41 Aprepitant iMpurity 41
(E)-3'-(2-(1-(3,4-dimethylphenyl) (E)-3'-(2-(1-(3,4-dimethylphenyl)
Tenofovir Tenofovir 34956-22-4 C14H23O6PS
Afatinib Impurity YHQ Afatinib Impurity YHQ
Sorafenib impurity 24/N-Methyl-4-[4-[[2-[(methylamino)carbonyl]-4-pyridinyl]amino]phenoxy]-2-pyridinecarboxamide Sorafenib impurity 24/N-Methyl-4-[4-[[2-[(methylamino)carbonyl]-4-pyridinyl]amino]phenoxy]-2-pyridinecarboxamide 2004659-83-8 C20H19N5O3
Cabozantinib Impurity 49 Cabozantinib Impurity 49 190728-26-8 C17H14N2O5
Landiolol impurity S Landiolol impurity S
Mupirocin Calcium EP Impurity G Mupirocin Calcium EP Impurity G C26H44CaO9
Atorvastatin Impurity 40 Atorvastatin Impurity 40 1116118-82-1 C50H64FN3O8
Hyoscine Butylbromide EP Impurity F Hyoscine Butylbromide EP Impurity F
Tocopherol EP Impurity D Tocopherol EP Impurity D
Org246653-1(RRT0.35) Org246653-1(RRT0.35)
1H-Isoindole-1,3(2H)-dione, 2-[(2S)-2,3-dihydroxypropyl]- 1H-Isoindole-1,3(2H)-dione, 2-[(2S)-2,3-dihydroxypropyl]- 119835-88-0 C11H11NO4
Brexpiprazole Impurity 76 Brexpiprazole Impurity 76 433303-94-7 C12H14N2S
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