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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:2-(4'-chloro-2,3,4,5-tetrahydro-[1,1'-biphenyl]-4-yl)-3-hydroxynaphthalene-1,4-dione
- CAS:1809464-27-4
- MF:C22H17ClO3
- Chemical Name:Aprepitant impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:Ticagrelor Related Compound 14
- CAS:2056269-94-2
- MF:C23H28F2N6O4S
- Structure:
- Chemical Name:Cefoxitin impurity E
- CAS:2395025-32-6
- MF:C17H19N3O8S2
- Structure:
- Chemical Name:N-((4-(3-methyl-5-phenylisoxazol-4-yl)phenyl)sulfonyl)propionamide
- CAS:477594-28-8
- MF:C19H18N2O4S
- Chemical Name:Moxifloxacin EP Impurity D HCl
- CAS:
- MF:
- Structure:
- Chemical Name:Moxifloxacin Impurity 30
- CAS:1395056-42-4
- MF:C21H24FN3O7
- Structure:
- Chemical Name:Tenofovir Impurity 37
- CAS:161760-03-8
- MF:C10H15O6PS
- Structure:
- Chemical Name:Apremilast
- CAS:1384967-20-7
- MF:C20H20N2O7S
- Structure:
- Chemical Name:Pramipexole Impurity 30
- CAS:1802051-36-0
- MF:C13H24ClN3S
- Structure:
- Chemical Name:NZWJKTHFNLHUJO-NWZSJJIMSA-N
- CAS:1422954-12-8
- MF:C22H26FN3O5S
- Structure:
- Chemical Name:LAT-NET
- CAS:607351-44-0
- MF:C25H39NO4
- Structure:
- Chemical Name:N,N-(ethane-1,2-diyl)bis(4-methyl-N-(3-((4-methylphenyl)sulfonamido)propyl)benzenesulfonamide)
- CAS:74676-47-4
- MF:C36H46N4O8S4
- Structure:
- Chemical Name:L-GLUCONO-1,5-LACTONE
- CAS:52153-09-0
- MF:C6H10O6
- Structure:
- Chemical Name:C-Desmethyl Atenolol
- CAS:1797116-92-7
- MF:C13H20N2O3
- Structure:
- Chemical Name:Losartan Impurity 7
- CAS:358685-13-9
- MF:C33H24Br2N4
- Structure:
- Chemical Name:Fenofibric Acid 1-Carboxyl-1-methylethyl Ester
- CAS:1797121-54-0
- MF:C21H21ClO6
- Structure:
- Chemical Name:2-Chloro-4'-fluorobenzophenone
- CAS:1806-23-1
- MF:C13H8ClFO
- Structure:
- Chemical Name:Diltiazem impurity
- CAS:115992-91-1
- MF:C17H18N2O3S
- Structure:
- Chemical Name:Raloxifene EP IMpurity
- CAS:1700655-64-6
- MF:C13H15ClN2O2S
- Chemical Name:Parecoxib Impurity M
- CAS:
- MF:
- Structure:
- Chemical Name:Cycloocta[b]pyridine, 2-(4-ethyl-1-piperazinyl)-4-[4-(4-ethyl-1-piperazinyl)phenyl]-5,6,7,8,9,10-hexahydro-
- CAS:1648791-23-4
- MF:C29H43N5
- Chemical Name:Linagliptin Impurity O
- CAS:
- MF:
- Chemical Name:Linagliptin Impurity T
- CAS:
- MF:
- Structure:
- Chemical Name:(R)-2-((6-(3-aminopiperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)-4-fluorobenzamide
- CAS:
- MF:C18H22FN5O3
- Chemical Name:Apremilast Impurity 2
- CAS:
- MF:
- Chemical Name:Etoricoxib Impurity 16
- CAS:
- MF:
- Chemical Name:Ibrutinib Impurity 2
- CAS:
- MF:
- Chemical Name:Mirabegron Impurity 14
- CAS:
- MF:
- Structure:
- Chemical Name:Vonoprazan Impurity 1
- CAS:881732-90-7
- MF:C17H17N3O2S
- Structure:
- Chemical Name:Atenolol EP Impurity
- CAS:
- MF:C14H22N2O3
- Chemical Name:Cinacalcet Impurity 20
- CAS:
- MF:
- Chemical Name:Dapagliflozin Impurity 11
- CAS:
- MF:
- Chemical Name:Dasatinib Impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:Etoricoxib impurity Q
- CAS:292067-97-1
- MF:C18H15ClN2S
- Chemical Name:Flucloxacillin Impurity
- CAS:
- MF:
- Structure:
- Chemical Name:Fluorometholone Impurity
- CAS:2796-99-8
- MF:C23H31FO7S
- Structure:
- Chemical Name:Verapamil Impurity
- CAS:1551304-28-9
- MF:C12H19NO2
- Structure:
- Chemical Name:Clopidogrel impurity reference substance
- CAS:
- MF:C15H14ClNO2S
- Chemical Name:Vildagliptin Impurity
- CAS:
- MF:
- Chemical Name:Aloeemodin-ω-O-β-D-glucopyranoside
- CAS:29010-56-8
- MF:C21H20O10
- Structure:
- Chemical Name:ethyl 1-(4-chlorophenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
- CAS:2029205-62-5
- MF:C26H25ClN4O4
- Structure:
- Chemical Name:1-Butanaminium, N,N,N-tributyl-, (1R,2S,5R)-2-(aminocarbonyl)-7-oxo-1,6-diazabicyclo[3.2.1]oct-6-yl sulfate
- CAS:1192651-80-1
- MF:C23H46N4O6S
- Chemical Name:Dihydroxyoxaliplatin(Oxaliplatin Impurity Ⅲ)
- CAS:
- MF:
- Chemical Name:cefditoren E-isomer(C=C)
- CAS:
- MF:
- Chemical Name:Mixture of Lamivudine Impurity Ⅳ and Impurity Ⅴ
- CAS:
- MF:
- Structure:
- Chemical Name:2-Ethoxybenzimidohydrazide
- CAS:889943-46-8
- MF:C9H13N3O
- Structure:
- Chemical Name:(E)-2-(6-(methoxycarbonyl)-2-oxoindolin-3-ylidene)-2-phenylacetic acid
- CAS:
- MF:C18H13NO5
- Structure:
- Chemical Name:8-Epi-cyanocobalamin
- CAS:41325-63-7
- MF:C63H88CoN14O14P
- Structure:
- Chemical Name:Lamivudine Impurity 2
- CAS:200396-21-0
- MF:C18H27N3O4S
- Structure:
- Chemical Name:Lamivudine Impurity 1
- CAS:1235712-40-9
- MF:C8H11N3O4S
- Chemical Name:Moxifloxacin Related Impurity 3
- CAS:
- MF:
- Structure:
- Chemical Name:Bisoprolol EP Impurity Q
- CAS:1346604-00-9
- MF:C16H27NO4
- Structure:
- Chemical Name:Ambrisentan Impurity E
- CAS:1312092-82-2
- MF:C21H18N2O3
- Structure:
- Chemical Name:Levofloxacin N-Oxide
- CAS:117678-37-2
- MF:C18H20FN3O5
- Structure:
- Chemical Name:Oseltamivir EP Impurity A
- CAS:1391047-93-0
- MF:C14H24N2O4
- Structure:
- Chemical Name:Quetiapine EP Impurity N
- CAS:1800291-86-4
- MF:C29H41N5O3S
- Chemical Name:Ceftazidime Impurity
- CAS:
- MF:
- Structure:
- Chemical Name:Chlorhexidine Digluconate Impurity N
- CAS:152504-10-4
- MF:C15H25ClN8
- Structure:
- Chemical Name:S-Azetidin-3-yl ethanethioate HCl
- CAS:886615-18-5
- MF:C5H9NOS
- Chemical Name:Olaparib Impurity C
- CAS:
- MF:
- Chemical Name:Olaparib Impurity F
- CAS:
- MF:
- Chemical Name:Dapoxetine Impurity 4
- CAS:
- MF:
- Chemical Name:Glycopyrrolate impurity 3
- CAS:
- MF:
- Chemical Name:Lamotrigine impurity B
- CAS:
- MF:
- Chemical Name:Ramosetron Impurity 3
- CAS:
- MF:
- Structure:
- Chemical Name:Loratadine Impurity 1
- CAS:
- MF:C22H23ClN2O2
- Structure:
- Chemical Name:Metoprolol IMpurity 6
- CAS:
- MF:C15H25NO3
- Chemical Name:Pitavastatin Impurity 5
- CAS:
- MF:
- Chemical Name:Prasugrel Impurity C
- CAS:
- MF:
- Chemical Name:Trifluridine Impurity 2
- CAS:
- MF:
- Chemical Name:Cefazolin Impurity 4
- CAS:
- MF:
- Chemical Name:Vonoprazan Impurity 3
- CAS:
- MF:
- Chemical Name:Cinacalcene Impurity I
- CAS:
- MF:
- Structure:
- Chemical Name:Valsartan Impurity 2
- CAS:
- MF:C24H29N5O3
- Chemical Name:Istradefylline Impurity 2
- CAS:
- MF:
- Chemical Name:Etoricoxib Impurity 3
- CAS:
- MF:
- Structure:
- Chemical Name:Apremilast Impurity 5
- CAS:200710-04-9
- MF:C11H13NO4
- Chemical Name:Topiroxostat Imp.C
- CAS:
- MF:
- Structure:
- Chemical Name:(3R,4S)-1-(4-chlorophenyl)-3-((S)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4-hydroxyphenyl)azetidin-2-one
- CAS:1700622-08-7
- MF:C24H21ClFNO3
- Structure:
- Chemical Name:Rabeprazole Impurity 2
- CAS:1163685-31-1
- MF:C11H15NO4
- Chemical Name:Regorafenib Impurity 8
- CAS:
- MF:
- Structure:
- Chemical Name:Flomoxef Impurity 5
- CAS:134237-56-2
- MF:C25H23ClF2N2O6S
- Structure:
- Chemical Name:Ranitidine impurity
- CAS:94167-82-5
- MF:C10H18N2O
- Chemical Name:nicergoline impurity E
- CAS:
- MF:
- Structure:
- Chemical Name:ethyl(2R,4S)-5-([1,1'-biphenyl]-4-yl)-4-(4-ethoxy-4-oxobutanamido)-2-methylpentanoate
- CAS:
- MF:C26H33NO5
- Chemical Name:Tacrolimus Impurity C
- CAS:
- MF:
- Chemical Name:Levodopa impurity 5
- CAS:
- MF:
- Structure:
- Chemical Name:(R)-N-(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide
- CAS:1223404-68-9
- MF:C21H22F2N6O2
- Structure:
- Chemical Name:Afatinib Impurity 18
- CAS:2316847-95-5
- MF:C22H20ClFN4O4
- Structure:
- Chemical Name:Ivabradine Impurity 1 Hydrochloride
- CAS:85175-52-6
- MF:C16H25ClN2O3
- Chemical Name:SofosBuvir Impurity 3
- CAS:
- MF:
- Structure:
- Chemical Name:phenyl (4-((6-carbamoyl-7-methoxyquinolin-4-yl)oxy)-2-chlorophenyl)carbamate
- CAS:417722-95-3
- MF:C24H18ClN3O5
- Structure:
- Chemical Name:Canagliflozin Impurity 10
- CAS:1672658-93-3
- MF:C24H25FO6S
- Chemical Name:Canagliflozin Impurity F
- CAS:
- MF:
- Chemical Name:Empagliflozin impurity E
- CAS:
- MF:
- Structure:
- Chemical Name:Fasudil Impurity 6
- CAS:2044706-58-1
- MF:C11H11NO3S
- Chemical Name:Ibrutinib Impurity 11
- CAS:
- MF:
- Structure:
- Chemical Name:Nintedanib impurity I
- CAS:334951-61-0
- MF:C30H31N5O4
- Structure:
- Chemical Name:(Z)-3-(hydroxy(phenyl)methylene)-2-oxoindoline-6-carboxylic acid compound with 3-benzoyl-2-oxoindoline-6-carboxylic acid
- CAS:1253768-91-0
- MF:C16H11NO4