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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:8-HYDROXY MIRTAZAPINE
- CAS:102335-57-9
- MF:C17H19N3O
- Structure:
- Chemical Name:1-[2-Amino-1-(4-benzyloxyphenyl)-ethyl]-cyclohexanol
- CAS:93413-61-7
- MF:C23H31NO2
- Structure:
- Chemical Name:16-Hydroxyerythromycin
- CAS:82230-93-1
- MF:C37H67NO14
- Structure:
- Chemical Name:4-[1-(4-Chlorophenyl)-1-phenylethoxy]-1-methylhexahydro-1H-azepine
- CAS:61771-18-4
- MF:C21H26ClNO
- Structure:
- Chemical Name:1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylic acid 3-isopropyl 5-(2-hydroxyethyl) ester
- CAS:82219-47-4
- MF:C20H24N2O7
- Structure:
- Chemical Name:3-[(3-TRIFLUOROMETHYL)PHENYL]-1-PROPENE
- CAS:1813-96-3
- MF:C10H9F3
- Structure:
- Chemical Name:(AS)-A-(2-CHLOROPHENYL)-2,3,6,7-TETRAHYDRO-2-OXO-THIENO[3,2-C]PYRIDINE-5(4H)-ACETIC ACID METHYL ESTER
- CAS:527687-26-9
- MF:C16H16ClNO3S
- Structure:
- Chemical Name:1-(P-METHOXYPHENYL)-1-BUTEN-3-ONE
- CAS:943-88-4
- MF:C11H12O2
- Structure:
- Chemical Name:ANAGRELIDE IMPURITY 5
- CAS:444904-63-6
- MF:C8H7Cl2N3
- Structure:
- Chemical Name:ANAGRELIDE IMPURITY 5
- CAS:444904-63-6
- MF:C8H7Cl2N3
- Structure:
- Chemical Name:2-[2-(2-AMINO-9H-PURIN-9-YL)ETHYL]-1,3-PROPANEDIOL
- CAS:104227-86-3
- MF:C10H15N5O2
- Structure:
- Chemical Name:1,4,8,11-Tetrakis[(4-methylphenyl)sulfonyl]-1,4,8,11-tetraazacyclotetradecane
- CAS:71089-74-2
- MF:C38H48N4O8S4
- Structure:
- Chemical Name:4-(2-Ethoxy benzamido)-1-methyl-3-n-propyl pyrazole-5-carboxamide.
- CAS:139756-03-9
- MF:C17H22N4O3
- Structure:
- Chemical Name:N-Hydroxy Riluzole
- CAS:179070-90-7
- MF:C8H5F3N2O2S
- Structure:
- Chemical Name:2-piperazine-4-amino-6,7-dimethoxyquinazoline Hydrochloride
- CAS:70843-11-7
- MF:C14H20ClN5O2
- Structure:
- Chemical Name:1-(3-Aminopropyl)aziridine
- CAS:1072-65-7
- MF:C5H12N2
- Structure:
- Chemical Name:3,5-Di(4-pyridinyl)-1H-1,2,4-triazol-1-amine
- CAS:4923-06-2
- MF:C12H10N6
- Structure:
- Chemical Name:(1α,2β,4β,5α)-9-Methyl-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-7α-ol
- CAS:498-46-4
- MF:C8H13NO2
- Structure:
- Chemical Name:Benzonitrile, 2-[(3,4-dihydro-6-methoxy-3-methyl-2,4-dioxo-1(2H)-pyrimidinyl)methyl]-
- CAS:2514763-78-9
- MF:C14H13N3O3
- Structure:
- Chemical Name:Benzonitrile, 2-[(3,4-dihydro-6-methoxy-3-methyl-2,4-dioxo-1(2H)-pyrimidinyl)methyl]-
- CAS:2514763-78-9
- MF:C14H13N3O3
- Structure:
- Chemical Name:5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[(1E)-2-(4-methyl-5-thiazolyl)ethenyl]-8-oxo-7-[(2-phenylacetyl)amino]-, (4-methoxyphenyl)methyl ester, (6R,7R)-
- CAS:104146-11-4
- MF:C29H27N3O5S2
- Chemical Name:Dapagliflozin Impurity 46
- CAS:
- MF:
- Chemical Name:Brexpiprazole Impurity ABCDEFGHJKL
- CAS:
- MF:
- Structure:
- Chemical Name:p,p'-(2-pyridylmethylene)bisphenol
- CAS:603-41-8
- MF:C18H15NO2
- Structure:
- Chemical Name:N-Deshydroxyethyl Dasatinib
- CAS:910297-51-7
- MF:C20H22ClN7OS
- Structure:
- Chemical Name:N-Desethyl Sunitinib
- CAS:356068-97-8
- MF:C20H23FN4O2
- Structure:
- Chemical Name:6-(4-{2-[5-(tert-Butyl-dimethyl-silanyloxy)-2-methylene-cyclohexylidene]-ethylidene}-7a-methyl-octahydro-inden-1-yl)-2-methyl-heptan-2-ol
- CAS:140710-90-3
- MF:C33H58O2Si
- Structure:
- Chemical Name:3-Hydroxy loratadine
- CAS:183483-15-0
- MF:C22H23ClN2O3
- Structure:
- Chemical Name:Dehydro Lacidipine
- CAS:130996-24-6
- MF:C26H31NO6
- Structure:
- Chemical Name:Granisetron Impurity F
- CAS:1364914-39-5
- MF:C18H24N4O
- Structure:
- Chemical Name:Solifenacin N-Oxide
- CAS:180272-28-0
- MF:C23H26N2O3
- Structure:
- Chemical Name:2-chloro-N-(4-ethoxyphenyl)-4-nitrobenzamide
- CAS:328258-90-8
- MF:C15H13ClN2O4
- Structure:
- Chemical Name:ACETAMINOPHEN IMPURITY B
- CAS:1693-37-4
- MF:C9H11NO2
- Structure:
- Chemical Name:2-chloro-N-(3-chloro-2-methylphenyl)nicotinamide
- CAS:57841-61-9
- MF:C13H10Cl2N2O
- Structure:
- Chemical Name:(R)-3-Amino-3-phenylpropionic acid
- CAS:13921-90-9
- MF:C9H11NO2
- Structure:
- Chemical Name:Ambroxol EP Impurity B
- CAS:18683-95-9
- MF:C14H18Br2N2O
- Structure:
- Chemical Name:Allopurinol Related CoMpound F
- CAS:321571-07-7
- MF:C12H14N4O4
- Structure:
- Chemical Name:N-[(n-butylaMino)carbonyl]-4-[(3-Methylphenyl)aMino]-3-pyridinesulfonaMide
- CAS:160972-33-8
- MF:C17H22N4O3S
- Structure:
- Chemical Name:(R)-N-DeMethyl Dapoxetine
- CAS:1202160-36-8
- MF:C20H21NO
- Structure:
- Chemical Name:14,15-Dehydro Budesonide
- CAS:131918-64-4
- MF:C25H32O6
- Structure:
- Chemical Name:2-(BenzylMethylaMino)-3',4'-dihydroxyacetophenone
- CAS:36467-25-1
- MF:C16H17NO3
- Structure:
- Chemical Name:2'-O-(5'-Deoxy-β-D-ribofuranosyl) Capecitabine
- CAS:1262133-66-3
- MF:C20H30FN3O9
- Structure:
- Chemical Name:4-Defluoro-4-hydroxy Gefitinib
- CAS:847949-50-2
- MF:C22H25ClN4O4
- Structure:
- Chemical Name:Desethyl Sildenafil
- CAS:139755-91-2
- MF:C20H26N6O4S
- Structure:
- Chemical Name:N-Desisopropyl-N-forMyl Bisoprolol
- CAS:1346602-59-2
- MF:C16H25NO5
- Structure:
- Chemical Name:N-DesMethyl Olopatadine
- CAS:113835-92-0
- MF:C20H21NO3
- Structure:
- Chemical Name:10-Keto DextroMethorphan
- CAS:57969-05-8
- MF:C18H23NO2
- Structure:
- Chemical Name:2'-[(1H-Tetrazol-5-yl)biphenyl-4-yl]Methanol
- CAS:160514-13-6
- MF:C14H12N4O
- Structure:
- Chemical Name:ent-Paroxol
- CAS:389573-45-9
- MF:C13H18FNO
- Structure:
- Chemical Name:Ethyl α-Thioglucopyranoside
- CAS:13533-58-9
- MF:C8H16O5S
- Structure:
- Chemical Name:Febuxostat Acyl-β-D-glucuronide
- CAS:1351692-92-6
- MF:C22H24N2O9S
- Structure:
- Chemical Name:Keto Bisoprolol
- CAS:864544-37-6
- MF:C18H29NO5
- Structure:
- Chemical Name:Olopatadine Carbaldehyde DISCONTINUED
- CAS:1376615-97-2
- MF:C21H23NO2
- Structure:
- Chemical Name:5-Chloro-1-methyl-4-nitroimidazole
- CAS:
- MF:C4H4ClN3O2
- Structure:
- Chemical Name:1-Propanol,3-[(1,1-dimethylethyl)amino]-2-[[4-(4-morpholinyl)-1,2,5-thiadiazol-3-yl]-oxy]-
- CAS:59697-06-2
- MF:C13H24N4O3S
- Structure:
- Chemical Name:Anagrelide impurity 4
- CAS:1092352-99-2
- MF:C10H6Cl3N3O
- Structure:
- Chemical Name:Anagrelide impurity 4
- CAS:1092352-99-2
- MF:C10H6Cl3N3O
- Structure:
- Chemical Name:rac Cetirizine N-Oxide > 70% by HPLC (Mixture of Diastereomers)
- CAS:1076199-80-8
- MF:C21H25ClN2O4
- Structure:
- Chemical Name:(S)-N-Didemethyl Dapoxetine
- CAS:147199-40-4
- MF:C19H19NO
- Structure:
- Chemical Name:Hydroxy Flunarizine
- CAS:87166-81-2
- MF:C26H26F2N2O
- Structure:
- Chemical Name:1-METHYL-4-NITRO-3-PROPYL-1H-PYRAZOLE-5-CARBOXYLIC ACID
- CAS:139756-00-6
- MF:C8H11N3O4
- Structure:
- Chemical Name:6-Hydroxy Nicorandil
- CAS:113743-17-2
- MF:C8H9N3O5
- Structure:
- Chemical Name:trans-Itraconazole
- CAS:252964-65-1
- MF:C35H38Cl2N8O4
- Structure:
- Chemical Name:N-(2-Pyridyl)oxamic Acid
- CAS:13120-39-3
- MF:C7H6N2O3
- Structure:
- Chemical Name:(trans)-4-Propyl-1-methyl-L-proline
- CAS:13380-36-4
- MF:C9H17NO2
- Structure:
- Chemical Name:N-Nordextromethorphan
- CAS:1531-23-3
- MF:C17H23NO
- Structure:
- Chemical Name:(S,S,R,R)-Orlistat
- CAS:111466-62-7
- MF:C29H53NO5
- Structure:
- Chemical Name:17β-Carboxy-17-desoxy Dexamethasone
- CAS:75262-69-0
- MF:C21H27FO4
- Structure:
- Chemical Name:1-(dimethoxymethyl)-3-methoxybenzene
- CAS:59276-28-7
- MF:C10H14O3
- Structure:
- Chemical Name:Benazepril impurity A
- CAS:
- MF:C24H28N2O5
- Structure:
- Chemical Name:3S,4R-4-[phenyl-1-methylpiperidinyl] methanol
- CAS:176022-03-0
- MF:C13H19NO
- Chemical Name:Nisoldipine Related Compound II
- CAS:
- MF:
- Structure:
- Chemical Name:5-Chloro-N1-Methylbenzene-1,2-diaMine
- CAS:84859-27-8
- MF:C7H9ClN2
- Structure:
- Chemical Name:(1'S,3'S,4'S)-Entecavir IsoMer
- CAS:1367369-80-9
- MF:C12H15N5O3
- Structure:
- Chemical Name:Iso Ganciclovir
- CAS:86357-09-7
- MF:C9H13N5O4
- Structure:
- Chemical Name:(1S,3R)-1-Benzo[1,3]dioxol-5-yl-2-(2-chloro-acetyl)-2,3,4,9-tetrahydro-1H-b-carboline-3-carboxylic Acid Methyl Ester
- CAS:629652-40-0
- MF:C22H19ClN2O5
- Structure:
- Chemical Name:2-Butyl-1,6-dihydro-N,N,4-trimethyl-6-oxo-1-[[2'-[1-(triphenylmethyl)-1H-tetrazol-5-yl][1,1'-biphenyl]-4-yl]methyl]-5-pyrimidineacetamide
- CAS:503155-67-7
- MF:C46H45N7O2
- Structure:
- Chemical Name:O-De(3-fluorobenzyl) Lapatinib
- CAS:1268997-70-1
- MF:C22H21ClN4O4S
- Structure:
- Chemical Name:5-Des[2-(tert-butylaMino)] BaMbuterol-5-ethylenediol
- CAS:112935-92-9
- MF:C14H20N2O6
- Structure:
- Chemical Name:Desloratadine Epoxide
- CAS:1346604-23-6
- MF:C19H19ClN2O
- Structure:
- Chemical Name:Zolmitriptan Related Compound B (20 mg) ((S)-2-Amino-3-{3-[2-(dimethylamino)ethyl]-1H-indol-5-yl}propan-1-ol)
- CAS:139264-69-0
- MF:C15H23N3O
- Structure:
- Chemical Name:1-BENZYL-N,4-DIMETHYLPIPERIDIN-3-AMINE DIHYDROCHLORIDE
- CAS:384338-23-2
- MF:C14H22N2
- Structure:
- Chemical Name:(R,Z)-2-((R)-((Z)-2-(2-aMinothiazol-4-yl)-2-(hydroxyiMino)acetaMido)(carboxy)Methyl)-5-ethylidene-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
- CAS:178422-39-4
- MF:C14H15N5O6S2
- Structure:
- Chemical Name:Acyclovir IMpurity C
- CAS:91702-61-3
- MF:C8H11N5O3
- Structure:
- Chemical Name:Nicergoline-5-Chloro Analogue
- CAS:38536-28-6
- MF:C24H26ClN3O3
- Structure:
- Chemical Name:1-(3-aMino-5-(benzyloxy)-2-hydroxyphenyl)ethanone
- CAS:861841-90-9
- MF:C15H15NO3
- Structure:
- Chemical Name:(2RS)-2-Hydroxy-2-[4-(2-Methylpropyl)phenyl]propanoic Acid
- CAS:
- MF:C13H18O3
- Structure:
- Chemical Name:(3RS)-1,3-Bis[4-(2-Methylpropyl) phenyl]butan-1-one
- CAS:
- MF:C24H32O
- Structure:
- Chemical Name:2-[4-(2-Methylpropyl)phenyl] ethanol
- CAS:2143535-25-3
- MF:C24H32O
- Structure:
- Chemical Name:1-cyclopropyl-6-fluoro-8-hydroxy-4-oxo-7-((4aR,7aR)-tetrahydro-1H-pyrrolo[3,4-b]pyridin-6(2H,7H,7aH)-yl)-1,4-dihydroquinoline-3-carboxylic acid hydrobroMide
- CAS:1292904-74-5
- MF:C20H23BrFN3O4
- Structure:
- Chemical Name:IMp. K (EP)
- CAS:40610-41-1
- MF:C13H17NO3
- Structure:
- Chemical Name:(Z)-Methyl 3-((2'-(N'-hydroxycarbaMiMidoyl)biphenyl-4-yl)Methyl)-2-oxo-2,3-dihydro-1H-benzo[d]iMidazole-4-carboxylate
- CAS:1499167-72-4
- MF:C23H20N4O4
- Structure:
- Chemical Name:4-(4-fluorobenzoyl)-3-(hydroxyMethyl)benzonitrile
- CAS:260371-16-2
- MF:C15H10FNO2
- Structure:
- Chemical Name:ATV-FX1 sodiuM salt
- CAS:1315629-79-8
- MF:C33H34FN2NaO7
- Structure:
- Chemical Name:Montelukast Impurity H
- CAS:851755-56-1
- MF:C34H32ClNO4S
- Structure:
- Chemical Name:SalMeterol EP IMpurity F
- CAS:1391054-40-2
- MF:C25H37NO3
- Structure:
- Chemical Name:[6-Hydroxy-2-(4-hydroxyphenyl)benzo[b]thiophen-7-yl]
- CAS:1391054-73-1
- MF:C28H27NO4S
- Structure:
- Chemical Name:(R)-α-Methyl-N-[3-[3-(trifluoroMethyl)phenyl]Methyl]-1-naphthaleneMethaneaMine Hydrochloride
- CAS:1229225-42-6
- MF:C20H19ClF3N
- Structure:
- Chemical Name:3(S)-Hydroperoxy Simvastatin
- CAS:1092716-44-3
- MF:C25H38O7
- Structure:
- Chemical Name:2(RS)-4-Methyl-1-(3-Methylpyridin-2-yl)-2-phenylpiperazine
- CAS:191546-94-8
- MF:C17H21N3