Febuxostat-impurities | Pharmaffiliates

febuxostat and its Impurities

Febuxostat is used to treat chronic gout and hyperuricemia. It is sold under the brand names Uloric among others, is a medication used long-term to treat gout due to high uric acid levels.. Reference standards of Febuxostat API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below

Displaying 50 results for febuxostat Impurities
PA 06 61000

Febuxostat - API

Febuxostat


  • Catalogue No.:PA 06 61000

  • CAS :

    144060-53-7

  • Molecular Formula : C16H16N2O3S

  • Molecular Weight : 316.37

PA 06 61510

2-(3-Carbamoyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylic Acid

2-(3-Carbamoyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylic Acid


  • Catalogue No.:PA 06 61510

  • CAS :

    1239233-86-3

  • Molecular Formula : C16H18N2O4S

  • Molecular Weight : 334.39

PA 06 61520

2-Isobutoxy-5-(4-methylthiazol-2-yl) benzonitrile

2-Isobutoxy-5-(4-methylthiazol-2-yl) benzonitrile


  • Catalogue No.:PA 06 61520

  • CAS :

    1335202-60-2

  • Molecular Formula : C15H16N2OS

  • Molecular Weight : 272.37

PA 06 61530

2,2'-(4-Isobutoxy-1,3-phenylene)bis(4-methylthiazole-5-carboxylic Acid)

2,2'-(4-Isobutoxy-1,3-phenylene)bis(4-methylthiazole-5-carboxylic Acid)


  • Catalogue No.:PA 06 61530

  • CAS :

    1330632-48-8

  • Molecular Formula : C20H20N2O5S2

  • Molecular Weight : 432.51

PA 06 61540

Ethyl 2-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate

Ethyl 2-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 61540

  • CAS :

    160844-75-7

  • Molecular Formula : C18H20N2O3S

  • Molecular Weight : 344.43

PA 06 61550

Isopropyl 2-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate

Isopropyl 2-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 61550

  • CAS :

    1346238-10-5

  • Molecular Formula : C19H22N2O3S

  • Molecular Weight : 358.45

PA 06 61560

2-[4-(2-methylpropoxy)phenyl]-4-methylthiazole-5-carboxylic Acid

2-[4-(2-methylpropoxy)phenyl]-4-methylthiazole-5-carboxylic Acid


  • Catalogue No.:PA 06 61560

  • CAS :

    1206550-99-3

  • Molecular Formula : C15H17NO3S

  • Molecular Weight : 291.37

PA 06 61570

Febuxostat Acyl-β-D-glucuronide

Febuxostat Acyl-β-D-glucuronide


  • Catalogue No.:PA 06 61570

  • CAS :

    1351692-92-6

  • Molecular Formula : C22H24N2O9S

  • Molecular Weight : 492.5

PA 06 61580

Febuxostat Diacid Impurity

Febuxostat Diacid Impurity


  • Catalogue No.:PA 06 61580

  • CAS :

    1239233-87-4

  • Molecular Formula : C16H17NO5S

  • Molecular Weight : 335.37

PA 06 61590

Febuxostat sec-Butoxy Acid

Febuxostat sec-Butoxy Acid


  • Catalogue No.:PA 06 61590

  • CAS :

    1335202-59-9

  • Molecular Formula : C16H16N2O3S

  • Molecular Weight : 316.37

PA 06 61600

Febuxostat tert-butoxy Acid

Febuxostat tert-butoxy Acid


  • Catalogue No.:PA 06 61600

  • CAS :

    2418591-43-0

  • Molecular Formula : C16H16N2O3S

  • Molecular Weight : 316.37

PA 06 61610

Febuxostat Isopropoxy Acid

Febuxostat Isopropoxy Acid


  • Catalogue No.:PA 06 61610

  • CAS :

    144060-52-6

  • Molecular Formula : C15H14N2O3S

  • Molecular Weight : 302.35

PA 06 61620

3-Cyano-4-hydroxybenzothioamide

3-Cyano-4-hydroxybenzothioamide


  • Catalogue No.:PA 06 61620

  • CAS :

    2518081-69-9

  • Molecular Formula : C8H6N2OS

  • Molecular Weight : 178.21

PA 06 61630

Febuxostat Dithioamide impurity

Febuxostat Dithioamide impurity


  • Catalogue No.:PA 06 61630

  • CAS :

    1330632-46-6

  • Molecular Formula : C12H16N2OS2

  • Molecular Weight : 268.4

PA 06 61640

Febuxostat Dicyano Impurity

Febuxostat Dicyano Impurity


  • Catalogue No.:PA 06 61640

  • CAS :

    161718-81-6

  • Molecular Formula : C12H12N2O

  • Molecular Weight : 200.24

PA 06 61650

Febuxostat Dicyano Nitro Impurity

Febuxostat Dicyano Nitro Impurity


  • Catalogue No.:PA 06 61650

  • CAS :

    52054-41-8

  • Molecular Formula : C8H3N3O2

  • Molecular Weight : 173.13

PA 06 61660

3-Descyano-3-((hydroxyimino)methyl) Febuxostat

3-Descyano-3-((hydroxyimino)methyl) Febuxostat


  • Catalogue No.:PA 06 61660

  • CAS :

    1350352-70-3

  • Molecular Formula : C16H18N2O4S

  • Molecular Weight : 334.39

PA 06 61670

2-Hydroxybenzothioamide

2-Hydroxybenzothioamide


  • Catalogue No.:PA 06 61670

  • CAS :

    7133-90-6

  • Molecular Formula : C7H7NOS

  • Molecular Weight : 153.2

PA 06 61680

Ethyl 2-Chloracetoacetate

Ethyl 2-Chloracetoacetate


  • Catalogue No.:PA 06 61680

  • CAS :

    609-15-4

  • Molecular Formula : C6H9ClO3

  • Molecular Weight : 164.59

PA 06 61690

Methyl 4-chloroacetoacetate

Methyl 4-chloroacetoacetate


  • Catalogue No.:PA 06 61690

  • CAS :

    32807-28-6

  • Molecular Formula : C5H7ClO3

  • Molecular Weight : 150.56

PA 06 61700

Ethyl 2,4-dichloro-3-oxobutanoate

Ethyl 2,4-dichloro-3-oxobutanoate


  • Catalogue No.:PA 06 61700

  • CAS :

    88-00-6

  • Molecular Formula : C6H8Cl2O3

  • Molecular Weight : 199.03

PA 06 61710

Methyl Acetoacetate

Methyl Acetoacetate


  • Catalogue No.:PA 06 61710

  • CAS :

    105-45-3

  • Molecular Formula : C5H8O3

  • Molecular Weight : 116.12

PA 06 61720

Methyl 2-[3-Cyano-4-(2-methylpropoxy)phenyl]-4-methylthiazole-5-carboxylate

Methyl 2-[3-Cyano-4-(2-methylpropoxy)phenyl]-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 61720

  • CAS :

    923942-34-1

  • Molecular Formula : C17H18N2O3S

  • Molecular Weight : 330.4

PA 06 61730

3-Descyano-3-formyl Febuxostat

3-Descyano-3-formyl Febuxostat


  • Catalogue No.:PA 06 61730

  • CAS :

    144060-62-8

  • Molecular Formula : C16H17NO4S

  • Molecular Weight : 319.38

PA 06 61740

Desisobutyl Febuxostat

Desisobutyl Febuxostat


  • Catalogue No.:PA 06 61740

  • CAS :

    407582-48-3

  • Molecular Formula : C12H8N2O3S

  • Molecular Weight : 260.27

PA STI 040630

Febuxostat-d9

Febuxostat-d9


  • Catalogue No.:PA STI 040630

  • CAS :

    1246819-50-0

  • Molecular Formula : C16H7D9N2O3S

  • Molecular Weight : 325.43

PA STI 040640

Febuxostat-d7

Febuxostat-d7


  • Catalogue No.:PA STI 040640

  • CAS :

    1285539-74-3

  • Molecular Formula : C16H9D7N2O3S

  • Molecular Weight : 323.42

PA 06 61750

1-​(3-​Hydroxyphenyl)​-​1-​propanone

1-​(3-​Hydroxyphenyl)​-​1-​propanone


  • Catalogue No.:PA 06 61750

  • CAS :

    13103-80-5

  • Molecular Formula : C9H10O2

  • Molecular Weight : 150.18

PA 06 61760

3'-Methoxybutyrophenone

3'-Methoxybutyrophenone


  • Catalogue No.:PA 06 61760

  • CAS :

    21550-06-1

  • Molecular Formula : C11H14O2

  • Molecular Weight : 178.23

PA 06 61770

3'-Methoxy-2-methylpropiophenone

3'-Methoxy-2-methylpropiophenone


  • Catalogue No.:PA 06 61770

  • CAS :

    6026-75-1

  • Molecular Formula : C11H14O2

  • Molecular Weight : 178.23

PA 06 61780

4-Hydroxythiobenzamide

4-Hydroxythiobenzamide


  • Catalogue No.:PA 06 61780

  • CAS :

    25984-63-8

  • Molecular Formula : C7H7NOS

  • Molecular Weight : 153.2

PA 06 61790

3-Descyano-3-ethoxycarbonyl Febuxostat

3-Descyano-3-ethoxycarbonyl Febuxostat


  • Catalogue No.:PA 06 61790

  • CAS :

    2476465-11-7

  • Molecular Formula : C18H21NO5S

  • Molecular Weight : 363.43

PA 06 61800

3-Hydroxybenzene-1-carbothioamide

3-Hydroxybenzene-1-carbothioamide


  • Catalogue No.:PA 06 61800

  • CAS :

    104317-54-6

  • Molecular Formula : C7H7NOS

  • Molecular Weight : 153.2

PA 06 61810

Ethyl 2,2-dichloro-3-oxobutanoate

Ethyl 2,2-dichloro-3-oxobutanoate


  • Catalogue No.:PA 06 61810

  • CAS :

    6134-66-3

  • Molecular Formula : C6H8Cl2O3

  • Molecular Weight : 199.03

PA 06 61820

2-[3-[(Hydroxyimino)methyl]-4-(2-methylpropoxy)phenyl]-4-methyl-5-Thiazolecarboxylic Acid Ethyl Ester

2-[3-[(Hydroxyimino)methyl]-4-(2-methylpropoxy)phenyl]-4-methyl-5-Thiazolecarboxylic Acid Ethyl Ester


  • Catalogue No.:PA 06 61820

  • CAS :

    1271738-74-9

  • Molecular Formula : C18H22N2O4S

  • Molecular Weight : 362.44

PA 06 61830

Febuxostat n-Butyl Isomer

Febuxostat n-Butyl Isomer


  • Catalogue No.:PA 06 61830

  • CAS :

    1657014-33-9

  • Molecular Formula : C16H16N2O3S

  • Molecular Weight : 316.38

PAI 06 012010

Ethyl 2-(4-Hydroxyphenyl)-4-methylthiazole-5-carboxylate

Ethyl 2-(4-Hydroxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PAI 06 012010

  • CAS :

    161797-99-5

  • Molecular Formula : C13H13NO3S

  • Molecular Weight : 263.31

PAI 06 012020

3-Descyano Febuxostat Ethyl Ester

3-Descyano Febuxostat Ethyl Ester


  • Catalogue No.:PAI 06 012020

  • CAS :

    144060-97-9

  • Molecular Formula : C17H21NO3S

  • Molecular Weight : 319.42

PA 06 61840

Ethyl 2-(3-(ethoxycarbonyl)-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate

Ethyl 2-(3-(ethoxycarbonyl)-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 61840

  • CAS :

    1643131-93-4

  • Molecular Formula : C20H25NO5S

  • Molecular Weight : 391.48

PA 06 61850

Ethyl 2-(3-Formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate

Ethyl 2-(3-Formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 61850

  • CAS :

    161798-01-2

  • Molecular Formula : C14H13NO4S

  • Molecular Weight : 291.32

PA 06 0611000

Ethyl 2-(3,5-diformyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate

Ethyl 2-(3,5-diformyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 0611000

  • CAS :

    2073891-59-3

  • Molecular Formula : C15H13NO5S

  • Molecular Weight : 319.33

PA 06 0611001

Ethyl 2-(3-cyano-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate

Ethyl 2-(3-cyano-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 0611001

  • CAS :

    161798-02-3

  • Molecular Formula : C14H12N2O3S

  • Molecular Weight : 288.32

PA 06 0611002

ethyl 2-(4-(sec-butoxy)-3-cyanophenyl)-4-methylthiazole-5-carboxylate

ethyl 2-(4-(sec-butoxy)-3-cyanophenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 0611002

  • CAS :

    2375033-35-3

  • Molecular Formula : C18H20N2O3S

  • Molecular Weight : 344.43

PA 06 0611003

Butyl 2-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate

Butyl 2-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 0611003

  • CAS :

    1619982-02-3

  • Molecular Formula : C20H24N2O3S

  • Molecular Weight : 372.48

PA 06 0611004

Ethyl 2-(4-butoxy-3-cyanophenyl)-4-methylthiazole-5-carboxylate

Ethyl 2-(4-butoxy-3-cyanophenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 0611004

  • CAS :

    2230270-05-8

  • Molecular Formula : C18H20N2O3S

  • Molecular Weight : 344.43

PA 06 0611005

Febuxostat Bromo Impurity

Febuxostat Bromo Impurity


  • Catalogue No.:PA 06 0611005

  • CAS :

    144060-40-2

  • Molecular Formula : C15H16BrNO3S

  • Molecular Weight : 370.26

PA 06 0611006

Febuxostat Isopropyl Isomer Ethyl Ester

Febuxostat Isopropyl Isomer Ethyl Ester


  • Catalogue No.:PA 06 0611006

  • CAS :

    144060-84-4

  • Molecular Formula : C17H18N2O3S

  • Molecular Weight : 330.4

PA 06 0611007

Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate

Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate


  • Catalogue No.:PA 06 0611007

  • CAS :

    161798-03-4

  • Molecular Formula : C18H21NO4S

  • Molecular Weight : 347.43

PA 06 0611008

2-(3-Formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylic Acid

2-(3-Formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylic Acid


  • Catalogue No.:PA 06 0611008

  • CAS :

    1312815-35-2

  • Molecular Formula : C12H9NO4S

  • Molecular Weight : 263.27

PA 06 0611009

3-Cyano-4-isobutyloxythiobenzamide

3-Cyano-4-isobutyloxythiobenzamide


  • Catalogue No.:PA 06 0611009

  • CAS :

    163597-57-7

  • Molecular Formula : C12H14N2OS

  • Molecular Weight : 234.32