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 57 results for febuxostat Impurities
Drug Reference Standards & Impurity Synthesis in India
PA 06 61000

Febuxostat

Febuxostat

  • Catalogue No.:PA 06 61000

  • CAS :

    144060-53-7

  • Molecular Formula : C16H16N2O3S

  • Molecular Weight : 316.37

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
PA 06 61670

2-Hydroxybenzothioamide

2-Hydroxybenzothioamide

  • Catalogue No.:PA 06 61670

  • CAS :

    7133-90-6

  • Molecular Formula : C7H7NOS

  • Molecular Weight : 153.2

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
PA 06 61710

Methyl Acetoacetate

Methyl Acetoacetate

  • Catalogue No.:PA 06 61710

  • CAS :

    105-45-3

  • Molecular Formula : C5H8O3

  • Molecular Weight : 116.12

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
PA 06 61740

Desisobutyl Febuxostat

Desisobutyl Febuxostat

  • Catalogue No.:PA 06 61740

  • CAS :

    407582-48-3

  • Molecular Formula : C12H8N2O3S

  • Molecular Weight : 260.27

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Drug Reference Standards & Impurity Synthesis in India
PA STI 040630

Febuxostat-d9

Febuxostat-d9

  • Catalogue No.:PA STI 040630

  • CAS :

    1246819-50-0

  • Molecular Formula : C16H7D9N2O3S

  • Molecular Weight : 325.43

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Drug Reference Standards & Impurity Synthesis in India
PA STI 040640

Febuxostat-d7

Febuxostat-d7

  • Catalogue No.:PA STI 040640

  • CAS :

    1285539-74-3

  • Molecular Formula : C16H9D7N2O3S

  • Molecular Weight : 323.42

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
PA 06 61760

3'-Methoxybutyrophenone

3'-Methoxybutyrophenone

  • Catalogue No.:PA 06 61760

  • CAS :

    21550-06-1

  • Molecular Formula : C11H14O2

  • Molecular Weight : 178.23

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
PA 06 61780

4-Hydroxythiobenzamide

4-Hydroxythiobenzamide

  • Catalogue No.:PA 06 61780

  • CAS :

    25984-63-8

  • Molecular Formula : C7H7NOS

  • Molecular Weight : 153.2

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
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

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0611010

2-(3-Cyano-4-propoxyphenyl)-4-methylthiazole-5-carboxylic Acid

2-(3-Cyano-4-propoxyphenyl)-4-methylthiazole-5-carboxylic Acid

  • Catalogue No.:PA 06 0611010

  • CAS :

    1530308-87-2

  • Molecular Formula : C15H14N2O3S

  • Molecular Weight : 302.35

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0611011

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

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

  • Catalogue No.:PA 06 0611011

  • CAS :

    2646683-37-4

  • Molecular Formula : C15H15NO4S

  • Molecular Weight : 305.35

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0611012

Diethyl 2,2'-(4-isobutoxy-1,3-phenylene)bis(4-methylthiazole-5-carboxylate)

Diethyl 2,2'-(4-isobutoxy-1,3-phenylene)bis(4-methylthiazole-5-carboxylate)

  • Catalogue No.:PA 06 0611012

  • CAS :

    1346238-13-8

  • Molecular Formula : C24H28N2O5S2

  • Molecular Weight : 488.62

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0611013

2-(3-Cyano-4-(3-hydroxy-2-methylpropoxy)phenyl)-4-methylthiazole-5-carboxylic Acid

2-(3-Cyano-4-(3-hydroxy-2-methylpropoxy)phenyl)-4-methylthiazole-5-carboxylic Acid

  • Catalogue No.:PA 06 0611013

  • CAS :

    887945-96-2

  • Molecular Formula : C16H16N2O4S

  • Molecular Weight : 332.37

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0611014

2-(3-Cyano-4-(2-hydroxy-2-methylpropoxy)phenyl)-4-methylthiazole-5-carboxylic Acid

2-(3-Cyano-4-(2-hydroxy-2-methylpropoxy)phenyl)-4-methylthiazole-5-carboxylic Acid

  • Catalogue No.:PA 06 0611014

  • CAS :

    407582-47-2

  • Molecular Formula : C16H16N2O4S

  • Molecular Weight : 332.37

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0611015

2-(4-(2-Carboxypropoxy)-3-cyanophenyl)-4-methylthiazole-5-carboxylic Acid

2-(4-(2-Carboxypropoxy)-3-cyanophenyl)-4-methylthiazole-5-carboxylic Acid

  • Catalogue No.:PA 06 0611015

  • CAS :

    407582-49-4

  • Molecular Formula : C16H14N2O5S

  • Molecular Weight : 346.36

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0611016

Dimethyl 2,2'-(4-isobutoxy-1,3-phenylene)bis(4-methylthiazole-5-carboxylate)

Dimethyl 2,2'-(4-isobutoxy-1,3-phenylene)bis(4-methylthiazole-5-carboxylate)

  • Catalogue No.:PA 06 0611016

  • CAS :

    1330632-47-7

  • Molecular Formula : C22H24N2O5S2

  • Molecular Weight : 460.56

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