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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:Tirofiban Impurity 14
- CAS:1103300-75-9
- MF:C12H17NO5S
- Structure:
- Chemical Name:Tirofiban Impurity 19
- CAS:158808-75-4
- MF:C18H28N2O3
- Structure:
- Chemical Name:Amoxicillin Impurity P
- CAS:
- MF:C16H19N3O5S
- Chemical Name:Ampicillin Impurity S
- CAS:
- MF:
- Chemical Name:Cefdinir Impurity F (CP)
- CAS:
- MF:
- Structure:
- Chemical Name:Flucloxacillin Sodium Impurity A
- CAS:68728-50-7
- MF:C19H20ClFN3NaO6S
- Structure:
- Chemical Name:Oxacillin Sodium Impurity G(EP)
- CAS:724695-30-1
- MF:C19H18ClN3O5S
- Chemical Name:Spectinomycin Impurity D
- CAS:
- MF:
- Structure:
- Chemical Name:(4R,4aS,5aR,12aS)-9-[2-(tert-butylamino)acetamido]-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide
- CAS:
- MF:C29H39N5O8
- Structure:
- Chemical Name:Amifostine Impurity 3
- CAS:41510-53-6
- MF:C5H15N2O3PS
- Chemical Name:Cefradine impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:Cefuroxime sodium impurity H
- CAS:
- MF:C16H16N4NaO8S
- Structure:
- Chemical Name:Bilastine N-Oxide
- CAS:2069238-47-5
- MF:C28H37N3O4
- Chemical Name:Cefoxitin impurity F
- CAS:
- MF:
- Structure:
- Chemical Name:Tenofovir Disoproxil Fumarate impurity N
- CAS:1962114-92-6
- MF:C29H44N10O14P2
- Structure:
- Chemical Name:Prednisolone Impurity 7
- CAS:61549-70-0
- MF:C21H26O6
- Structure:
- Chemical Name:Tenofovir Related Compound 10
- CAS:16958-60-4
- MF:C8H11N5O
- Structure:
- Chemical Name:N-(4-methyl-3-(N-(4-(pyridin-3-yl)pyrimidin-2-yl)acetamido)phenyl)-4-((4-methylpiperazin-1-yl)methyl)benzamide
- CAS:
- MF:C31H33N7O2
- Structure:
- Chemical Name:N1-benzyl-N1,4-dimethyl-N3-(4-(pyridin-3-yl)pyrimidin-2-yl)benzene-1,3-diamine
- CAS:
- MF:C24H23N5
- Structure:
- Chemical Name:(E)-4-(((5-(2-fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3- yl)methyl)(methyl)amino)-4-oxobut-2-enoic acid
- CAS:
- MF:C21H18FN3O5S
- Structure:
- Chemical Name:Apremilast
- CAS:1384439-80-8
- MF:C17H16N2O6S
- Structure:
- Chemical Name:TROXACITABINE
- CAS:145511-98-4
- MF:C8H11N3O4
- Structure:
- Chemical Name:XXZJUZXKBFUPQH-IKGGRYGDSA-N
- CAS:1618657-31-0
- MF:C18H17FO4
- Structure:
- Chemical Name:6-methyl-2-oxo-5-pyridin-2-yl-1H-pyridine-3-carbonitrile
- CAS:106637-42-7
- MF:C12H9N3O
- Structure:
- Chemical Name:Levofloxacin Impurity 15
- CAS:94714-58-6
- MF:C14H12F4O4
- Structure:
- Chemical Name:Losartan Impurity 2
- CAS:1407521-00-9
- MF:C22H20ClN3O
- Structure:
- Chemical Name:Epoxy Exemestane (6-Alfa Isomer)
- CAS:152764-24-4
- MF:C20H24O3
- Structure:
- Chemical Name:6-Cyclopropyl-10-fluoro-7,8-dihydrobenzo[k]phenanthridine
- CAS:1187966-94-4
- MF:C20H16FN
- Structure:
- Chemical Name:2-methoxy-1,7,9-trimethylpurine-6,8-dione
- CAS:51168-26-4
- MF:C9H12N4O3
- Structure:
- Chemical Name:2-CHLORO-N-(2,5-DIMETHYLPHENYL)ACETAMIDE
- CAS:5177-35-5
- MF:C10H12ClNO
- Structure:
- Chemical Name:(R)-(+)-(3-CHLORO-2-HYDROXYPROPYL)TRIMETHYLAMMONIUM CHLORIDE
- CAS:117604-42-9
- MF:C6H15Cl2NO
- Structure:
- Chemical Name:REICHSTEIN'S SUBSTANCE S 21-ACETATE
- CAS:640-87-9
- MF:C23H32O5
- Structure:
- Chemical Name:N,N'-(OXYDI-4,1-PHENYLENE)BISACETAMIDE
- CAS:3070-86-8
- MF:C16H16N2O3
- Structure:
- Chemical Name:3-(2-hydroxyethyl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate
- CAS:85677-95-8
- MF:C18H20N2O7
- Structure:
- Chemical Name:3-isobutylisobenzofuran-1(3H)-one
- CAS:199736-94-2
- MF:C12H14O2
- Structure:
- Chemical Name:isopropyl(4,6-diamino-2-(1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b] pyridin-3-yl)pyrimidin-5-yl)(methyl)carbamate
- CAS:625115-54-0
- MF:C22H23FN8O2
- Structure:
- Chemical Name:Malvidin 3-O-glucoside
- CAS:18470-06-9
- MF:C23H25O12+
- Structure:
- Chemical Name:(S)-Olodaterol
- CAS:868049-50-7
- MF:C21H26N2O5
- Structure:
- Chemical Name:5,6-DIHYDRO-3-METHYLAMINO-2H-1,4-THIAZIN-2-ONE OXIME
- CAS:148639-72-9
- MF:C5H9N3OS
- Structure:
- Chemical Name:M-ISOBUTYL IBUPROFEN
- CAS:66622-47-7
- MF:C13H18O2
- Structure:
- Chemical Name:1,3-BIS(METHYLTHIO)-2-PROPANOL
- CAS:31805-83-1
- MF:C5H12OS2
- Structure:
- Chemical Name:4-ISOTHIOCYANATO-4'-NITRODIPHENYL ETHER
- CAS:19881-18-6
- MF:C13H8N2O3S
- Structure:
- Chemical Name:(R)-N-Glycidylphthalimide
- CAS:181140-34-1
- MF:C11H9NO3
- Structure:
- Chemical Name:6-chloro-N-((1R,2S)-2-(3,4-difluorophenyl)cyclopropyl)-5- nitro-2-(propylthio)pyrimidin-4-amine
- CAS:1427523-93-0
- MF:C16H15ClF2N4O2S
- Chemical Name:Bendamustine Impurity 15
- CAS:
- MF:
- Chemical Name:Bendamustine Related Impurity 10
- CAS:
- MF:
- Chemical Name:Bortezomib Impurity 16
- CAS:
- MF:
- Structure:
- Chemical Name:Captopril Related Compound 8
- CAS:112243-88-6
- MF:C9H15NO3S
- Chemical Name:Edoxaban Impurity 25 (1R,2S,4R) Oxalate
- CAS:
- MF:
- Structure:
- Chemical Name:Ezetimibe Impurity 35
- CAS:1650568-82-3
- MF:C39H46F2N2O5Si2
- Chemical Name:Fosaprepitant Impurity 8
- CAS:
- MF:
- Structure:
- Chemical Name:Linagliptin Impurity 28
- CAS:2074688-84-7
- MF:C22H23N7O3
- Chemical Name:Pantoprazole Impurity 3
- CAS:
- MF:
- Chemical Name:Ticagrelor Related Compound 58
- CAS:
- MF:
- Chemical Name:Vildagliptin Impurity 9
- CAS:
- MF:
- Structure:
- Chemical Name:Cefathiamidine Impurity 5
- CAS:40818-86-8
- MF:C10H11ClN2O4S
- Structure:
- Chemical Name:methyl 4-hydroxy-3,5-diisopropylbenzoic acid
- CAS:
- MF:C14H20O3
- Chemical Name:Apixaban Impurity J
- CAS:
- MF:
- Chemical Name:Avibactam Impurity C
- CAS:
- MF:
- Chemical Name:Brexpiprazole Impurity M
- CAS:
- MF:
- Chemical Name:Cefaclor Impurity 5
- CAS:
- MF:
- Chemical Name:Linagliptin Impurity 39
- CAS:
- MF:
- Chemical Name:Peramivir Impurity 5
- CAS:
- MF:
- Chemical Name:Pidotimod Impurity O
- CAS:
- MF:
- Chemical Name:Pramipexole EP Impurity C
- CAS:
- MF:
- Structure:
- Chemical Name:Imiquimod Impurity 5
- CAS:853793-02-9
- MF:C15H18N4
- Structure:
- Chemical Name:9-(1,3-diacetate-2-propoxymethyl)guanine
- CAS:86357-19-9
- MF:C13H17N5O6
- Structure:
- Chemical Name:Cefadroxil Impurity 6
- CAS:2378158-45-1
- MF:C32H32N6O9S2
- Structure:
- Chemical Name:Loratadine Impurity 9
- CAS:125743-81-9
- MF:C22H23ClN2O2
- Chemical Name:Metronidazole Impurity 1
- CAS:
- MF:
- Structure:
- Chemical Name:Parecoxib Impurity 16
- CAS:2235371-89-6
- MF:C19H18N2O4S
- Chemical Name:Rosuvastatin Impurity 54
- CAS:
- MF:
- Structure:
- Chemical Name:Vonoprazan Fumarate Impurity 6
- CAS:2250243-23-1
- MF:C33H27F2N5O4S2
- Structure:
- Chemical Name:3-((3aS,4R,6S,6aR)-6-(2-hydroxyethoxy)-2,2-dimethyltetrahydro- 4H-cyclopenta[d][1,3]dioxol-4-yl)-5-(propylthio)-3H-[1,2,3] triazolo[4,5-d]pyrimidin-7-ol
- CAS:1456538-51-4
- MF:C17H25N5O5S
- Chemical Name:Esomeprazole Impurity 24
- CAS:
- MF:
- Chemical Name:Prasugrel Impurity 15
- CAS:
- MF:
- Structure:
- Chemical Name:Pregabalin Impurity 18
- CAS:1621171-19-4
- MF:C9H15NO2
- Chemical Name:Pregabalin Impurity 23
- CAS:
- MF:
- Structure:
- Chemical Name:Butylphthalide impurity
- CAS:16692-58-3
- MF:C12H14O2
- Structure:
- Chemical Name:ethyl 2,5-dihydroxybenzenesulfonate
- CAS:
- MF:C8H10O5S
- Structure:
- Chemical Name:5-ALLYLIDENE-10,11-DIHYDRO-5H-DIBENZO[A,D]CYCLOHEPTENE
- CAS:24755-73-5
- MF:C18H16
- Chemical Name:Nintedanib Impurity 27
- CAS:
- MF:
- Structure:
- Chemical Name:ethyl 2-(2-formyl-3-hydroxyphenyl)-4-methylthiazole-5- carboxylate
- CAS:
- MF:C14H13NO4S
- Structure:
- Chemical Name:LUMAT-004
- CAS:313544-31-9
- MF:C16H17N3O3
- Structure:
- Chemical Name:Varenicline Impurity 3
- CAS:1333145-89-3
- MF:C14H15N3
- Structure:
- Chemical Name:Amlodipine Impurity 22 (Z-Isomer)
- CAS:
- MF:C26H31ClN2O8S
- Structure:
- Chemical Name:Amlodipine Impurity 28
- CAS:79781-21-8
- MF:C18H20ClNO5
- Chemical Name:Axitinib Impurity 16
- CAS:
- MF:
- Chemical Name:Axitinib Impurity 22
- CAS:
- MF:
- Structure:
- Chemical Name:Imidazo[5,1-f][1,2,4]triazin-4(1H)-one, 2-[2-ethoxy-5-[(4-ethyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-5-methyl-7-propyl-
- CAS:448184-48-3
- MF:C23H32N6O5S
- Structure:
- Chemical Name:Dolutegravir 4-Desfluoro Impurity
- CAS:1863916-87-3
- MF:C20H20FN3O5
- Structure:
- Chemical Name:Tetrabenazine Dehydro Impurity
- CAS:100322-43-8
- MF:C19H25NO3
- Structure:
- Chemical Name:Cefotiam Impurity 22
- CAS:1628441-07-5
- MF:C13H14N4O5S2
- Structure:
- Chemical Name:Dezocine Impurity 2
- CAS:100667-17-2
- MF:C16H21NO
- Structure:
- Chemical Name:loteprednol Impurity 7
- CAS:82034-20-6
- MF:C24H33ClO7
- Structure:
- Chemical Name:Sitagliptin Impurity 28
- CAS:898543-70-9
- MF:C32H25F12N9O2
- Structure:
- Chemical Name:Vilanterol Impurity 3 Triphenylacetate
- CAS:503070-62-0
- MF:C23H31Cl2NO5
- Chemical Name:Empagliflozin Impurity 33
- CAS:
- MF:
- Structure:
- Chemical Name:Sugammadex Impurity 21
- CAS:2412952-93-1
- MF:C72H113NaO48S8