CAS number index
Every CAS Registry Number in our catalogue, sorted numerically. Paste a CAS No. into the search bar to jump straight to the product.
| CAS No. | Substance | Grades |
|---|---|---|
| 1332634-93-1 | Clofazimine Iminophenazine Impurity | 1 |
| 1332713-64-0 | Losartan EP Impurity F | 1 |
| 1332724-03-4 | Citalopram EP Impurity B Oxalate | 1 |
| 1332724-08-9 | Citalopram EP Impurity E (HBr salt) | 1 |
| 1332981-14-2 | (3R,8S,9S,12S) Atazanavir | 1 |
| 1332981-16-4 | Atazanavir EP Impurity G | 1 |
| 1333110-38-5 | N-Ethyl Pioglitazone | 1 |
| 1333110-79-4 | N-Methyl Pioglitazone | 1 |
| 1333112-32-5 | Dimethyl 2,2'-disulfanediylbis(3-(4-(2-(5-ethylpyridin-2-yl)ethoxy)phenyl)propanoate) | 1 |
| 1333145-89-3 | Monomethyl Varenicline Impurity | 1 |
| 1333234-71-1 | 2-(3-(Diisopropylamino)-1-phenylpropyl)-4-formylphenyl Isobutyrate | 1 |
| 1333316-61-2 | 5-Chloro-2-methylthieno[2,3-d]isothiazol-3(2H)-one 1,1-dioxide | 1 |
| 1333390-56-9 | 1-(4-Chloro-3-(trifluoromethyl)phenyl)-3-(2-fluoro-4-hydroxyphenyl)urea | 1 |
| 1333489-03-4 | Regorafenib N-Oxide-d3 | 1 |
| 1333998-21-2 | Aprepitant M2 Metabolite (1S,2R,3R)-Isomer Hydrochloride | 1 |
| 1333998-27-8 | Aprepitant M2 Metabolite (1R,2S,3S)-Isomer Hydrochloride | 1 |
| 1334237-71-6 | Etelcalcetide Hydrochloride | 1 |
| 1334244-28-8 | Sitagliptin Impurity 44 | 1 |
| 1334294-09-5 | 4-Fluoroisoquinoline-8-sulfonic acid | 1 |
| 1334294-10-8 | 4-Fluoroisoquinoline-8-sulfonyl chloride Hydrochloride | 1 |
| 1334321-39-9 | Boc-3-Hydroxy-1-adamantyl-L-glycine | 1 |
| 1334337-31-3 | 6-Chloro-2-methoxy-9H-purine | 1 |
| 1334423-12-9 | 1-(4-(4-(((2R,4S)-2-((1H-Imidazol-1-yl)methyl)-2-(2-chlorophenyl)-1,3-dioxolan-4-yl)methoxy)phenyl)piperazin-1-yl)ethan-1-one | 1 |
| 1334513-02-8 | (R)-Sofosbuvir Pentafluorophenoxy Analogue | 1 |
| 1334513-10-8 | Sofosbuvir Amino Analog | 1 |
| 1334613-51-2 | Methyl 3-bromo-4-methoxy-5-methylbenzoate | 1 |
| 1334850-99-5 | MitoTEMPO, ≥98% (HPLC) | 1 |
| 1335042-56-2 | Furan-2,5-diyldimethanediyl dioctadecanoate | 1 |
| 1335110-44-5 | Rosuvastatin FP Impurity B, Rosuvastatin EP Impurity H (Calcium salt) | 1 |
| 1335202-59-9 | Febuxostat sec-Butoxy Acid | 1 |
| 1335202-60-2 | Febuxostat Descarboxy Impurity | 1 |
| 1335210-23-5 | 1-(2,2-Dimethoxyethyl)-5-methoxy-6-(methoxycarbonyl)-4-oxo-1,4-dihydropyridine-3-carboxylic Acid | 1 |
| 1335210-24-6 | (3S,11AR)-6-Methoxy-3-methyl-5,7-dioxo-2,3,5,7,11,11a-hexahydrooxazolo[3,2-a]pyrido[1,2-d]pyrazine-8-carboxylic Acid | 1 |
| 1335210-25-7 | (3S,11AR)-N-(2,4-Difluorobenzyl)-6-methoxy-3-methyl-5,7-dioxo-2,3,5,7,11,11a-hexahydrooxazolo[3,2-a]pyrido[1,2-d]pyrazine-8-carboxamide | 1 |
| 1335210-34-8 | Dolutegravir Impurity 21 | 1 |
| 1335210-35-9 | O-Methyl Dolutegravir | 1 |
| 1335316-40-9 | (5S)-N-(Methoxycarbonyl)-L-valyl-5-methyl-L-proline | 1 |
| 1335333-86-2 | 4'-Fluoroacetophenone D4 | 1 |
| 1335475-19-8 | Cefixime EP Impurity B | 1 |
| 1335523-82-4 | (S)-3-(4-Bromophenyl)piperidine, extra pure >98% | 1 |
| 1335555-87-7 | Cefixime Sulfoxide | 1 |
| 1336754-69-8 | (R)-3-(4-Bromophenyl)piperidine, extra pure >99% | 1 |
| 1337482-15-1 | Sofosbuvir 3'-O-Phosphoramidate | 1 |
| 1337482-17-3 | Sofosbuvir 3',5'-Bis-(S)-phosphate | 1 |
| 1337529-56-2 | Pentafluoro Sofosbuvir Impurity | 1 |
| 1337563-47-9 | Varenicline Di N-Oxide Hydrochloride Impurity | 2 |
| 1337856-57-1 | 6-Chloro-8-fluoro-3,4-dihydronaphthalen-2(1H)-one | 1 |
| 1337859-03-6 | 8-Chloro-6-fluoro-3,4-dihydronaphthalen-2(1H)-one | 1 |
| 1337861-29-6 | 7-Chloro-6-fluoro-3,4-dihydro-2(1H)-naphthalenone | 1 |
| 1337876-26-2 | Formoterol EP Impurity H | 1 |
| 1337917-44-8 | Misoprostol acid-d5 | 1 |
| 1337918-83-8 | Zavegepant | 1 |
| 1337966-15-0 | Benzydamine EP Impurity D | 1 |
| 1337972-89-0 | Levonorgestrel EP Impurity C | 1 |
| 1338055-88-1 | Colistin B Sulfate | 1 |
| 1338225-97-0 | Doravirine | 1 |
| 1338231-09-6 | NOTA-NHS ester, 90% | 1 |
| 1338375-20-4 | 1,1-Dimethylethyl (2S)-3-ethoxy-5,6-dihydro-2-methyl-1(2H)-pyrazinecarboxylate | 1 |
| 1338452-54-2 | Everolimus-d4 | 1 |
| 1338549-01-1 | 11b,21,21-Trihydroxy-6a-methylpregna-1,4-diene-3,20-dione | 1 |
| 1338549-02-2 | Methylprednisolone EP Impurity D | 1 |
| 1338599-32-8 | Ensifentrine pyrimidinetrione Ammonia Salt Impurity | 1 |
| 1338677-76-1 | 6-(3-Aminopiperidin-1-yl)-3-methylpyrimidine-2,4(1H,3H)-dione | 1 |
| 1338800-81-9 | Anastrozole Diacid Impurity | 1 |
| 1338800-82-0 | Anastrozole Monoacid Mononitrile Impurity | 1 |
| 1338823-20-3 | Rel-(S,R,S,S)-Nebivolol Hydrochloride | 1 |
| 1338830-33-3 | Telmisartan Impurity-B (Stage-VI) | 1 |
| 1338830-37-7 | Telmisartan EP Impurity B Methyl Ester | 1 |
| 1338830-39-9 | 4'-((1,7'-Dimethyl-2'-propyl-1H,1'H-[2,5'-bibenzo[d]imidazol]-1'-yl)methyl)-[1,1'-biphenyl]-2-carbonitrile | 1 |
| 1339955-47-3 | (R)-8-(3-Aminopiperidin-1-yl)-3,7-dimethyl-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione | 1 |
| 1339955-49-5 | (R)-3-((6-(3-Aminopiperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile | 1 |
| 1340173-28-5 | Baricitinib Impurity 40 | 1 |
| 1340545-88-1 | Memantine Glycine | 1 |
| 1340593-59-0 | Oteseconazole | 1 |
| 1341219-46-2 | (S)-1-Nitrosopyrrolidin-3-ol | 1 |
| 1341456-39-0 | Iloperidone Impurity 24 | 1 |
| 1341552-19-9 | 1-(4-Morpholinophenyl)urea | 1 |
| 1343477-01-9 | N2'-Deacetyl-N2'-[3-[(1-ethyl-2,5-dioxo-3-pyrrolidinyl)thio]-1-oxopropyl]-maytansine | 1 |
| 1343498-72-5 | Regorafenib Desmethyl Impurity | 1 |
| 1344000-56-1 | Cyproheptadine Impurity 7 | 1 |
| 1344032-05-8 | Gabapentin Lactom Impurity | 1 |
| 1344557-18-1 | (R)-1-(5-Methylnaphthalen-1-yl)ethan-1-amine | 1 |
| 1345202-52-9 | (2S)-2-(6-Fluorochroman-2-yl)-2-Hydroxyethyl Acetate | 1 |
| 1345202-53-0 | (S)-2-((R)-6-Fluorochroman-2-yl)-2-(tosyloxy)ethyl acetate | 1 |
| 1345336-53-9 | Nilotinib Impurity A | 1 |
| 1345337-82-7 | 2-(((1R,2R,3AS,9aS)-2-Hydroxy-1-((S)-3-hydroxyoctyl)-2,3,3a,4,9,9a-hexahydro-1H-cyclopenta[b]naphthalen-5-yl)oxy)-N,N-bis(2-hydroxyethyl)acetamide | 1 |
| 1345339-53-8 | (1S,2S,3S,5S)-3-(Benzyloxy)-5-(6-(benzyloxy)-2-(tritylamino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol | 1 |
| 1345413-20-8 | (1S,2R)-2-(3,4-Difluorophenyl)-cyclopropanamine | 1 |
| 1345510-43-1 | Ferric Derisomaltose | 1 |
| 1345822-86-7 | Sitagliptin Phosphate EP Impurity C | 1 |
| 1345822-87-8 | Sitagliptin Phosphate EP Impurity B | 1 |
| 1345847-71-3 | Methyl 1-((4-fluorophenyl)carbamoyl)cyclopropane-1-carboxylate | 1 |
| 1345847-93-9 | Altiratinib | 1 |
| 1345982-69-5 | Linerixibat | 1 |
| 1346231-35-3 | Hydroxymethyl Clopidogrel Bisulphate | 1 |
| 1346238-10-5 | Febuxostat Isopropyl Ester | 1 |
| 1346238-13-8 | Febuxostat (n-1) | 1 |
| 1346238-15-0 | Febuxostat ethylester Amide impurity | 1 |
| 1346240-11-6 | N3-Methyl Esomeprazole | 1 |
| 1346242-31-6 | Rivastigmine Carbamate Impurity | 1 |
| 1346242-32-7 | Rivastigmine Ether Impurity (USP) | 1 |
| 1346242-81-6 | Erdafitinib | 1 |
| 1346550-33-1 | Clevidipine butyrate Impurity CLE 04 | 1 |
| 1346558-08-4 | Dehydro Ivabradine Oxalate | 1 |
| 1346562-34-2 | Nebivolol Impurity 1 | 1 |
| 1346597-36-1 | Isopropyl Tenofovir | 1 |
| 1346597-39-4 | 2-Hydroxy Irinotecan | 1 |
| 1346597-81-6 | Bupivacaine N-oxide | 1 |
| 1346597-95-2 | Dimetindene EP Impurity H | 1 |
| 1346597-97-4 | rac-trans-4-Defluoro-4-ethoxy Paroxetine Hydrochloride | 1 |
| 1346598-10-4 | Etifoxine-d5 | 1 |
| 1346598-11-5 | Domperidone EP Impurity B | 1 |
| 1346598-14-8 | Ganciclovir EP Impurity D | 1 |
| 1346598-28-4 | Lansoprazole Impurity H | 1 |
| 1346598-34-2 | 5-Fluoro Paliperidone | 1 |
| 1346598-39-7 | N-Acetylpiperazine-N'-(4-phenol) Ketoconazole | 1 |
| 1346598-44-4 | Minocycline EP Impurity H | 1 |
| 1346598-52-4 | Irbesartan Dimer Impurity | 1 |
| 1346598-58-0 | Isavuconazole-d4 | 1 |
| 1346598-72-8 | 4-Chloro Bupropion Hydrochloride | 1 |
| 1346598-86-4 | 2-Fluoro Atorvastatin Sodium Salt | 1 |
| 1346598-94-4 | 4-Acetyl Ramelteon | 1 |
| 1346598-95-5 | 8-Chlorotheophylline-D6 | 1 |
| 1346599-09-4 | Duloxetine 2-Naphthalenol Impurity | 1 |
| 1346599-13-0 | Doxofylline-d4 | 1 |
| 1346599-24-3 | 1-[2-(Dimethylamino)ethyl]-6,6a,7,11-tetrahydrooxazolo[3,4-b]pyrrolo[2,3-h]isoquinolin-9(3H)-one | 1 |
| 1346599-33-4 | N-Methyl Carvedilol Hydrochloride | 1 |
| 1346599-35-6 | Trazodone EP Impurity E | 1 |
| 1346599-45-8 | Azilsartan-d5 | 1 |
| 1346599-56-1 | Tolvaptan gamma-Oxobutanoic Acid Impurity | 1 |
| 1346599-74-3 | 5-Methoxy-1-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfonyl)-1H-benzo[d]imidazole | 1 |
| 1346599-75-4 | Tolvaptan Metabolite (DM-4107) | 1 |
| 1346599-76-5 | Adapalene EP Impurity B | 1 |
| 1346599-85-6 | 5-Methoxy-1-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-1h-benzo[d]imidazole | 1 |
| 1346600-26-7 | Naratriptan Impurity E (Hydrochloride) | 1 |
| 1346600-29-0 | N-(4-Methoxy-3,5-dimethyl-2-pyridinyl)methyl Omeprazole Sulfide | 1 |
| 1346600-30-3 | 8-Dechloro-7-chloro-N-methyl Desloratadine | 1 |
| 1346600-38-1 | rac Dehydro-O-desmethyl Venlafaxine | 1 |
| 1346600-43-8 | Cis-4-(4-Chlorophenyl)cyclohexanecarboxylic Acid | 1 |
| 1346600-54-1 | Glipizide EP Impurity D | 1 |
| 1346600-61-0 | 8-Dechloro-10-chloro Desloratadine | 1 |
| 1346600-67-6 | Gabapentin-d6 | 1 |
| 1346600-74-5 | N-Desmethyl Ivabradine-d6 Hydrochloride | 1 |
| 1346600-77-8 | Decyclohexanol-ethoxycarbonyl-O-desmethyl Venlafaxine | 1 |
| 1346600-85-8 | Zolpidem Tartrate - Impurity A | 1 |
| 1346600-86-9 | Methocarbamol-d3 | 1 |
| 1346601-02-2 | Itopride-d6 Hydrochloride | 1 |
| 1346601-14-6 | rac N-Desmethyl-N-(4-methoxyphenethyl) Venlafaxine | 1 |
| 1346601-19-1 | Bisoprolol Hydroxyethyl Ester Impurity | 1 |
| 1346601-35-1 | Iloperidone Carboxylic Acid-d3 | 1 |
| 1346601-53-3 | 8-Dechloro-7-chloro Desloratadine | 1 |
| 1346601-55-5 | O-Desmethyl Venlafaxine Cyclic Impurity | 1 |
| 1346601-75-9 | Bisoprolol EP Impurity N | 1 |
| 1346601-76-0 | Oxcarbazepine EP Impurity K | 1 |
| 1346601-82-8 | Deferiprone-d3 | 1 |
| 1346602-12-7 | Dapsone-d4 | 1 |
| 1346602-17-2 | 2'-Oxo Tadalafil | 1 |
| 1346602-19-4 | 8-Dechloro-7-chloro Loratadine | 1 |
| 1346602-28-5 | Risperidone EP Impurity E | 1 |
| 1346602-34-3 | Prochlorperazine EP Impurity C | 1 |
| 1346602-40-1 | 5,6,7,8,9-Dehydro-10-desmethyl Finasteride | 1 |
| 1346602-50-3 | Domperidone EP Impurity E | 1 |
| 1346602-59-2 | N-Desisopropyl-N-formyl Bisoprolol | 1 |
| 1346602-67-2 | Sildenafil EP Impurity G | 1 |
| 1346602-84-3 | Rivastigmine USP RC F | 1 |
| 1346602-98-9 | Carvedilol Dimer | 1 |
| 1346603-00-6 | 2-(tert-Butylamino)-3',5'-dichloropropiophenone Hydrochloride | 1 |
| 1346603-05-1 | 2-Isopropoxyethyl 4-(oxiran-2-ylmethoxy)benzoate | 1 |
| 1346603-24-4 | Dapoxetine N-Oxide (90%) | 1 |
| 1346603-25-5 | ent-Moxifloxacin Hydrochloride | 1 |
| 1346603-26-6 | Keto Bisoprolol Hydrochloride | 1 |
| 1346603-30-2 | Nefopam-d3 Hydrochloride | 1 |
| 1346603-35-7 | 4-Benzoyl-3-(hydroxymethyl)benzonitrile | 1 |
| 1346603-41-5 | N-Nitrosodiethylamine-d4 | 1 |
| 1346603-48-2 | De(methypiperazinyl) Sildenafil Dimer Impurity | 1 |
| 1346603-62-0 | N,N'-Desethylene Levofloxacin Hydrochloride | 1 |
| 1346603-71-1 | Ketotifen EP Impurity E | 1 |
| 1346603-80-2 | Propafenone EP Impurity G | 1 |
| 1346603-86-8 | Risperidone EP Impurity F | 1 |
| 1346603-88-0 | Alimemazine-D6 | 1 |
| 1346603-99-3 | Trazodone 1,4-Di-N-Oxide | 1 |
| 1346604-00-9 | Bisoprolol EP Impurity Q | 1 |
| 1346604-08-7 | O-Desmethyl Sulfadoxine | 1 |
| 1346604-11-2 | Des[[N-(1,1-Dimethylethyl)amino]carbonyl] 17-(Propionyl) Finasteride | 1 |
| 1346604-13-4 | Allopurinol EP Impurity C | 1 |
| 1346604-16-7 | Naratriptan Impurity C (RRT 1.18) | 1 |
| 1346604-17-8 | Droperidol EP Impurity E | 1 |
| 1346604-18-9 | Oseltamivir EP Impurity D | 1 |
| 1346604-23-6 | Desloratadine Epoxide | 1 |
| 1346604-68-9 | 3-(3-Aminopropyl)benzoic Acid Hydrochloride | 1 |
| 1346604-70-3 | Candesartan-d4 | 1 |
| 1346604-90-7 | Fingolimod-d4 Hydrochloride | 1 |
| 1346605-15-9 | S-Clopidogrel N-Methyl Impurity | 1 |
| 1346605-16-0 | 8-Dechloro-10-chloro Loratadine | 1 |
| 1346605-18-2 | rac Deoxy-O-desmethyl Venlafaxine | 1 |
| 1346605-38-6 | Tadalafil EP Impurity H | 1 |
| 1346605-40-0 | Abacavir-d4 Hydrochloride | 1 |
| 1346606-13-0 | Balsalazide Isopropyl Ester | 1 |
| 1346606-24-3 | Risperidone - Impurity J | 1 |
| 1346606-28-7 | 3-Oxo Rosuvastatin Sodium | 1 |
| 1346606-44-7 | Rosuvastatin 4,5-Anhydro Acid | 1 |
| 1346606-50-5 | Sulfasalazine-d4 | 1 |
| 1346606-51-6 | Tamoxifen Dimer | 1 |
| 1346606-53-8 | 2'-[(1E)-2-[4-[[(2-Carboxyethyl)amino]carbonyl]phenyl]diazenyl] Balsalazide | 1 |
| 1346606-59-4 | Diminazene-13C2,15N4 Dihydrochloride | 1 |
| 1346606-62-9 | Balsalazide USP Impurity 4 | 1 |
| 1346606-66-3 | Clomiphene-D5 Hydrochloride | 1 |
| 1346606-79-8 | 4-Hydroxy Stiripentol-13CD3 | 1 |
| 1346616-97-4 | R-Amlodipine-d4 | 1 |
| 1346617-06-8 | (S)-Azelastine N-Oxide | 1 |
| 1346617-12-6 | (S)-Propranolol-D7 Hydrochloride | 1 |
| 1346617-18-2 | Azelastine N-Oxide (R)-Isomer | 1 |
| 1346617-25-1 | (R)-Propranolol-D7 Hydrochloride | 1 |
| 1346617-30-8 | Escitalopram EP Impurity L | 1 |
| 1346617-39-7 | Valaciclovir EP Impurity C Hydrochloride | 1 |
| 1346617-47-7 | Pramipexole Di-Amide | 1 |
| 1346623-11-7 | (2R,3S)-2-(4-(Cyclopentylamino)phenyl)-1-(2-fluoro-6-methylbenzoyl)piperidine-3-carboxylic acid | 1 |
| 1346623-14-0 | Avacopan metabolite M1 | 1 |
| 1346623-17-3 | Avacopan | 1 |
| 1346649-67-9 | 2-(5-Methoxy-1H-benzo[d]imidazole-2-carbonothioyl)-3,5-dimethylpyridin-4(1H)-one | 1 |
| 1346746-53-9 | Dimetindene Maleate EP Impurity F | 1 |
| 1346746-73-3 | Naratriptan Impurity E (RRT 1.36) | 1 |
| 1346747-38-3 | Fingolimod-d4 | 1 |
| 1346747-49-6 | Rosuvastatin 3-Oxo Acid Sodium Salt | 1 |
| 1346747-65-6 | Valaciclovir EP Impurity C | 1 |
| 1346747-69-0 | Valaciclovir EP Impurity D | 1 |
| 1347262-29-6 | Olmesartan Methyl Ester | 1 |
| 1347289-37-5 | Phenylperidol | 1 |
| 1347304-18-0 | Axitinib Sulfoxide | 1 |
| 1347311-10-7 | Fexofenadine Tertiary dehydrated Impurity | 1 |
| 1347362-67-7 | 6,7-Dihydro Rosuvastatin Sodium Salt | 1 |
| 1347604-52-7 | 2,4,6-Trifluoro-N-(6-(piperidine-4-carbonyl)pyridin-2-yl)benzamide | 1 |
| 1347746-73-9 | Pimozide Olefin | 1 |
| 1347797-73-2 | Rosuvastatin EP Impurity L | 1 |
| 1347860-96-1 | 1,2-Dihydro-1,2,3-triazine | 1 |
| 1347979-29-6 | Sparsentan Open Ring Impurity | 1 |
| 1348032-93-8 | Sunitinib Dimethyl Amide Impurity | 1 |
| 1348044-24-5 | N-Methyl-2-[[3-[(1E)-2-(1-oxido-2-pyridinyl)ethenyl]-1H-indazol-6-yl]sulfinyl]-benzamide | 1 |
| 1348046-61-6 | Deschloro-Zopiclone | 1 |
| 1348337-81-4 | Azilsartan Impurity 1 | 1 |
| 1348481-03-7 | Neratinib quinoline N-oxide | 1 |
| 1348536-59-3 | Axitinib Sulfonyl Impurity | 1 |
| 1348822-76-3 | Levocabastine Hydrochloride EP Impurity A | 1 |
| 1349659-53-5 | 1-(4-(1-(3,5,5,8,8-Pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)vinyl)phenyl)ethanone | 1 |
| 1349659-57-9 | Bexarotene Impurity E | 1 |
| 1349723-93-8 | Elacestrant Dihydrochloride | 1 |
| 1349854-31-4 | Ambrisentan Ethyl Ester | 1 |
| 1350206-14-2 | Deschloro Etoricoxib | 1 |
| 1350219-74-7 | 4,6,7,8,9,10-Hexahydro-1H-6,10-methanoazepino[4,5-g]quinoxaline-2,3-dione hydrochloride | 1 |
| 1350352-70-3 | 3-Descyano-3-((hydroxyimino)methyl) Febuxostat | 1 |