Febuxostat Related Products

SynZeal is a leading innovator in pharmaceutical reference standards. We supply high-quality Reference Standards of Febuxostat, pharmacopeial and non-pharmacopeial Febuxostat impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Febuxostat impurities reference standards are useful in pharmaceutical research. They are useful in product development, ANDA and DMF filing, quality control (QC), method validation, and stability studies. It is also useful in the identification of unknown impurities and the assessment of genotoxic potential.

Febuxostat-related products are thoroughly characterized. Febuxostat products are supplied with detailed COA & analytical data meeting regulatory compliance. We can also provide EP/USP traceable standards based on your requirements. The supplied products are re-tested at regular intervals.

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3-Descyano-3-ethoxycarbonyl Febuxostat

• SZ CAT No: SZ-F010049

• CAS No:

  2476465-11-7

• Mol.F.: C18H21NO5S
• Mol.Wt.: 363.4
• Inv. Status: In Stock

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3-Descyano-3-formyl Febuxostat

• SZ CAT No: SZ-F010029

• CAS No:

  144060-62-8

• Mol.F.: C16H17NO4S 
• Mol.Wt.: 319.4
• Inv. Status: In Stock

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Ethyl 2,2-dichloro-3-Oxobutanoate

• SZ CAT No: SZ-F010054

• CAS No:

  6134-66-3

• Mol.F.: C6H8Cl2O3
• Mol.Wt.: 199
• Inv. Status: In Stock

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Ethyl 2-Chloracetoacetate

• SZ CAT No: SZ-F010062

• CAS No:

  609-15-4

• Mol.F.: C6H9ClO3
• Mol.Wt.: 164.6
• Inv. Status: In Stock

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Febuxostat

• SZ CAT No: SZ-F010001

• CAS No:

  144060-53-7

• Mol.F.: C16H16N2O3S
• Mol.Wt.: 316.4
• Inv. Status: In Stock

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Febuxostat 4-Hydroxy Acid Impurity

• SZ CAT No: SZ-F010003

• CAS No:

  407582-48-3

• Mol.F.: C12H8N2O3S
• Mol.Wt.: 260.3
• Inv. Status: In Stock

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Febuxostat Amide Impurity

• SZ CAT No: SZ-F010005

• CAS No:

  1239233-86-3

• Mol.F.: C16H18N2O4S
• Mol.Wt.: 334.4
• Inv. Status: In Stock

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Febuxostat Bromo Impurity

• SZ CAT No: SZ-F010006

• CAS No:

  144060-40-2

• Mol.F.: C15H16BrNO3S
• Mol.Wt.: 370.3
• Inv. Status: In Stock

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Febuxostat Butyl Ester Impurity

• SZ CAT No: SZ-F010039

• CAS No:

  1619982-02-3

• Mol.F.: C20H24N2O3S
• Mol.Wt.: 372.5
• Inv. Status: In Stock

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Febuxostat Butyl Ether Analog

• SZ CAT No: SZ-F010007

• CAS No:

  1657014-33-9

• Mol.F.: C16H16N2O3S
• Mol.Wt.: 316.4
• Inv. Status: In Stock

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Febuxostat Descarboxy Impurity

• SZ CAT No: SZ-F010008

• CAS No:

  1335202-60-2

• Mol.F.: C15H16N2OS
• Mol.Wt.: 272.4
• Inv. Status: In Stock

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Febuxostat Descyano Ethyl Ester

• SZ CAT No: SZ-F010009

• CAS No:

  144060-97-9

• Mol.F.: C17H21NO3S
• Mol.Wt.: 319.4
• Inv. Status: In Stock

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Febuxostat Descyano Hydroxy Ethyl Ester

• SZ CAT No: SZ-F010010

• CAS No:

  161797-99-5

• Mol.F.: C13H13NO3S
• Mol.Wt.: 263.3
• Inv. Status: In Stock

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Febuxostat Descyano Impurity

• SZ CAT No: SZ-F010012

• CAS No:

  1206550-99-3

• Mol.F.: C15H17NO3S
• Mol.Wt.: 291.4
• Inv. Status: In Stock

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Febuxostat Dicarboxylic Acid Impurity

• SZ CAT No: SZ-F010013

• CAS No:

  1239233-87-4

• Mol.F.: C16H17NO5S
• Mol.Wt.: 335.4
• Inv. Status: In Stock

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Febuxostat Dithioamide Impurity

• SZ CAT No: SZ-F010023

• CAS No:

  1330632-46-6

• Mol.F.: C12H16N2OS2
• Mol.Wt.: 268.4
• Inv. Status: In Stock

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Febuxostat Ethyl Ester

• SZ CAT No: SZ-F010016

• CAS No:

  160844-75-7

• Mol.F.: C18H20N2O3S
• Mol.Wt.: 344.4
• Inv. Status: In Stock

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Febuxostat Hemihydrate

• SZ CAT No: SZ-F010072

• CAS No:

  442664-09-7

• Mol.F.: C16H16N2O3S : 1/2(H2O)
• Mol.Wt.: 316.4 : 1/2(18.0)
• Inv. Status: In Stock
• Rel. CAS No: 144060-53-7 (free base)

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Febuxostat Impurity 1

• SZ CAT No: SZ-F010025

• CAS No:

  161798-01-2

• Mol.F.: C14H13NO4S
• Mol.Wt.: 291.3
• Inv. Status: In Stock

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Febuxostat Impurity 19

• SZ CAT No: SZ-F010038

• CAS No:

  2375033-35-3

• Mol.F.: C18H20N2O3S
• Mol.Wt.: 344.4
• Inv. Status: In Stock

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Febuxostat Impurity 2

• SZ CAT No: SZ-F010026

• CAS No:

  161798-03-4

• Mol.F.: C18H21NO4S
• Mol.Wt.: 347.4
• Inv. Status: In Stock

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Febuxostat Impurity 26

• SZ CAT No: SZ-F010048

• CAS No:

  2230270-05-8

• Mol.F.: C18H20N2O3S
• Mol.Wt.: 344.4
• Inv. Status: In Stock

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Febuxostat Impurity 28

• SZ CAT No: SZ-F010052

• CAS No:

  1350352-70-3

• Mol.F.: C16H18N2O4S
• Mol.Wt.: 334.4
• Inv. Status: In Stock

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Febuxostat Impurity 38

• SZ CAT No: SZ-F010071

• CAS No:

  2476465-06-0

• Mol.F.: C17H19NO5S
• Mol.Wt.: 349.4
• Inv. Status: In Stock

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Febuxostat Impurity 6

• SZ CAT No: SZ-F010027

• CAS No:

  1271738-74-9

• Mol.F.: C18H22N2O4S 
• Mol.Wt.: 362.5
• Inv. Status: In Stock

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Febuxostat Impurity 7

• SZ CAT No: SZ-F010028

• CAS No:

  NA

• Mol.F.: C16H18N2O4S 
• Mol.Wt.: 334.4
• Inv. Status: In Stock

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Febuxostat Isopropyl Ester

• SZ CAT No: SZ-F010017

• CAS No:

  1346238-10-5

• Mol.F.: C19H22N2O3S
• Mol.Wt.: 358.5
• Inv. Status: In Stock

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Febuxostat Isopropyl Ether Analog

• SZ CAT No: SZ-F010018

• CAS No:

  144060-52-6

• Mol.F.: C15H14N2O3S
• Mol.Wt.: 302.4
• Inv. Status: In Stock

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Febuxostat Methyl Ester

• SZ CAT No: SZ-F010019

• CAS No:

  923942-34-1

• Mol.F.: C17H18N2O3S
• Mol.Wt.: 330.4
• Inv. Status: In Stock

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Febuxostat Tert-butoxy Acid

• SZ CAT No: SZ-F010022

• CAS No:

  2418591-43-0

• Mol.F.: C16H16N2O3S 
• Mol.Wt.: 316.4 
• Inv. Status: In Stock

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Febuxostat USP Related Compound C

• SZ CAT No: SZ-F010002

• CAS No:

  161798-02-3

• Mol.F.: C14H12N2O3S
• Mol.Wt.: 288.3
• Inv. Status: In Stock

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Febuxostat USP Related Compound D

• SZ CAT No: SZ-F010021

• CAS No:

  1335202-59-9

• Mol.F.: C16H16N2O3S 
• Mol.Wt.: 316.0
• Inv. Status: In Stock

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Febuxostat USP Related Compound E

• SZ CAT No: SZ-F010020

• CAS No:

  1530308-87-2

• Mol.F.: C15H14N2O3S 
• Mol.Wt.: 302.4
• Inv. Status: In Stock

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2-Hydroxybenzothioamide

• SZ CAT No: SZ-F010056

• CAS No:

  7133-90-6

• Mol.F.: C7H7NOS
• Mol.Wt.: 153.2
• Inv. Status: Synthesis on demand

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3-Cyano-4-isobutoxybenzothioamide

• SZ CAT No: SZ-F010040

• CAS No:

  163597-57-7

• Mol.F.: C12H14N2OS
• Mol.Wt.: 234.3
• Inv. Status: Synthesis on demand

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3-Descyano-3-Formyl Febuxostat Isobutyl Ester

• SZ CAT No: SZ-F010080

• CAS No:

  1312815-36-3

• Mol.F.: C20H25NO4S
• Mol.Wt.: 375.5
• Inv. Status: Synthesis on demand

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3-Hydroxybenzothioamide

• SZ CAT No: SZ-F010055

• CAS No:

  104317-54-6

• Mol.F.: C7H7NOS
• Mol.Wt.: 153.2
• Inv. Status: Synthesis on demand

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4-Hydroxybenzothioamide

• SZ CAT No: SZ-F010063

• CAS No:

  25984-63-8

• Mol.F.: C7H7NOS
• Mol.Wt.: 153.2
• Inv. Status: Synthesis on demand

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4-Nitrophthalonitrile

• SZ CAT No: SZ-F010031

• CAS No:

  31643-49-9

• Mol.F.: C8H3N3O2 
• Mol.Wt.: 173.1
• Inv. Status: Synthesis on demand

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Ethyl 2,4-Dichloro-3-Oxobutanoate

• SZ CAT No: SZ-F010077

• CAS No:

  88-00-6

• Mol.F.: C6H8Cl2O3
• Mol.Wt.: 199.0
• Inv. Status: Synthesis on demand

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Febuxostat Acyl-Β-D-Glucuronide

• SZ CAT No: SZ-F010004

• CAS No:

  1351692-92-6

• Mol.F.: C22H24N2O9S
• Mol.Wt.: 492.5
• Inv. Status: Synthesis on demand

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Febuxostat Amide Methyl Ester

• SZ CAT No: SZ-F010045

• CAS No:

  1643131-89-8

• Mol.F.: C17H20N2O4S
• Mol.Wt.: 348.4
• Inv. Status: Synthesis on demand

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Febuxostat DEE Impurity

• SZ CAT No: SZ-F010061

• CAS No:

  1643131-93-4

• Mol.F.: C20H25NO5S
• Mol.Wt.: 391.5
• Inv. Status: Synthesis on demand

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Febuxostat Descyano Hydroxy Impurity

• SZ CAT No: SZ-F010011

• CAS No:

  886501-78-6

• Mol.F.: C11H9NO3S
• Mol.Wt.: 235.3
• Inv. Status: Synthesis on demand

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Febuxostat Diformyl Impurity

• SZ CAT No: SZ-F010050

• CAS No:

  2073891-59-3

• Mol.F.: C15H13NO5S
• Mol.Wt.: 319.3
• Inv. Status: Synthesis on demand

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Febuxostat Dimer Impurity 1

• SZ CAT No: SZ-F010095

• CAS No:

  NA

• Mol.F.: C29H26N2O8S2
• Mol.Wt.: 594.7
• Inv. Status: Synthesis on demand

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Febuxostat Dimethylthiazole Ethyl Ester Impurity

• SZ CAT No: SZ-F010014

• CAS No:

  7210-77-7

• Mol.F.: C8H11NO2S
• Mol.Wt.: 185.2
• Inv. Status: Synthesis on demand

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Febuxostat Dithiazole Acid Impurity

• SZ CAT No: SZ-F010015

• CAS No:

  1330632-48-8

• Mol.F.: C20H20N2O5S2
• Mol.Wt.: 432.5
• Inv. Status: Synthesis on demand

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Febuxostat Ethyl Ester Amide Impurity

• SZ CAT No: SZ-F010058

• CAS No:

  1346238-15-0

• Mol.F.: C18H22N2O4S
• Mol.Wt.: 362.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 10

• SZ CAT No: SZ-F010030

• CAS No:

  NA

• Mol.F.: C16H16N2O4S 
• Mol.Wt.: 332.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 12

• SZ CAT No: SZ-F010032

• CAS No:

  NA

• Mol.F.: C9H2N4O2 
• Mol.Wt.: 198.1
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 13

• SZ CAT No: SZ-F010033

• CAS No:

  NA

• Mol.F.: C32H36N4O6S2 
• Mol.Wt.: 636.8
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 15

• SZ CAT No: SZ-F010034

• CAS No:

  NA

• Mol.F.: C15H14N2O3S
• Mol.Wt.: 302.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 16

• SZ CAT No: SZ-F010035

• CAS No:

  NA

• Mol.F.: C15H14N2O3S
• Mol.Wt.: 302.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 17

• SZ CAT No: SZ-F010036

• CAS No:

  NA

• Mol.F.: C14H12N2O3S
• Mol.Wt.: 288.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 18

• SZ CAT No: SZ-F010037

• CAS No:

  NA

• Mol.F.: C15H15NO4 
• Mol.Wt.: 273.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 21

• SZ CAT No: SZ-F010041

• CAS No:

  1346238-12-7

• Mol.F.: C16H14N2O3S
• Mol.Wt.: 314.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 22

• SZ CAT No: SZ-F010042

• CAS No:

  NA

• Mol.F.: C16H16N2O3S
• Mol.Wt.: 316.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 23

• SZ CAT No: SZ-F010043

• CAS No:

  NA

• Mol.F.: C22H24N2O5S2
• Mol.Wt.: 460.6
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 24

• SZ CAT No: SZ-F010044

• CAS No:

  2428631-65-4

• Mol.F.: C17H15N3O3S
• Mol.Wt.: 341.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 27

• SZ CAT No: SZ-F010051

• CAS No:

  NA

• Mol.F.: C32H31N3O6S2
• Mol.Wt.: 617.7
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 29

• SZ CAT No: SZ-F010053

• CAS No:

  NA

• Mol.F.: C12H7ClN2O2S
• Mol.Wt.: 278.7
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 3

• SZ CAT No: SZ-F010024

• CAS No:

  1330632-47-7

• Mol.F.: C22H24N2O5S2
• Mol.Wt.: 460.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 30

• SZ CAT No: SZ-F010060

• CAS No:

  2230270-03-6

• Mol.F.: C18H21NO4S
• Mol.Wt.: 347.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 31

• SZ CAT No: SZ-F010064

• CAS No:

  138330-01-5

• Mol.F.: C10H9NOS
• Mol.Wt.: 191.2
• Inv. Status: Synthesis on demand
• Rel. CAS No: 29302-63-4 (HCl salt) ; 1172835-03-8 (HBr salt)

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Febuxostat Impurity 32

• SZ CAT No: SZ-F010065

• CAS No:

  NA

• Mol.F.: C17H18N2O3S
• Mol.Wt.: 330.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 33

• SZ CAT No: SZ-F010066

• CAS No:

  1312815-35-2

• Mol.F.: C12H9NO4S
• Mol.Wt.: 263.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 34

• SZ CAT No: SZ-F010067

• CAS No:

  NA

• Mol.F.: C14H13NO4S
• Mol.Wt.: 291.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 35

• SZ CAT No: SZ-F010068

• CAS No:

  NA

• Mol.F.: C14H13NO4S
• Mol.Wt.: 291.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 36

• SZ CAT No: SZ-F010069

• CAS No:

  NA

• Mol.F.: C14H13NO4S
• Mol.Wt.: 291.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 37

• SZ CAT No: SZ-F010070

• CAS No:

  NA

• Mol.F.: C18H22N2O3S
• Mol.Wt.: 346.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 39

• SZ CAT No: SZ-F010073

• CAS No:

  2646683-37-4

• Mol.F.: C15H15NO4S
• Mol.Wt.: 305.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 40

• SZ CAT No: SZ-F010074

• CAS No:

  407582-49-4

• Mol.F.: C16H14N2O5S
• Mol.Wt.: 346.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 41

• SZ CAT No: SZ-F010075

• CAS No:

  407582-47-2

• Mol.F.: C16H16N2O4S
• Mol.Wt.: 332.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 42

• SZ CAT No: SZ-F010076

• CAS No:

  887945-96-2

• Mol.F.: C16H16N2O4S
• Mol.Wt.: 332.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 43

• SZ CAT No: SZ-F010078

• CAS No:

  65840-68-8

• Mol.F.: C8H13ClO3
• Mol.Wt.: 192.6
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 44

• SZ CAT No: SZ-F010079

• CAS No:

  1116-50-3

• Mol.F.: C8H13BrO3
• Mol.Wt.: 237.1
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 45

• SZ CAT No: SZ-F010081

• CAS No:

  NA

• Mol.F.: C14H14N2O4S
• Mol.Wt.: 306.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 46

• SZ CAT No: SZ-F010082

• CAS No:

  NA

• Mol.F.: C19H20N2O4S
• Mol.Wt.: 372.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 47

• SZ CAT No: SZ-F010083

• CAS No:

  2407762-02-9

• Mol.F.: C13H7N3O3S
• Mol.Wt.: 285.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 48

• SZ CAT No: SZ-F010084

• CAS No:

  2407762-01-8

• Mol.F.: C15H11N3O3S
• Mol.Wt.: 313.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 49

• SZ CAT No: SZ-F010085

• CAS No:

  NA

• Mol.F.: C16H12N2O5S
• Mol.Wt.: 344.3
• Inv. Status: Synthesis on demand

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• 

Febuxostat Impurity 50

• SZ CAT No: SZ-F010086

• CAS No:

  NA

• Mol.F.: C16H17NO3S
• Mol.Wt.: 303.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 51

• SZ CAT No: SZ-F010087

• CAS No:

  NA

• Mol.F.: C15H13N3O4S
• Mol.Wt.: 331.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 52

• SZ CAT No: SZ-F010088

• CAS No:

  NA

• Mol.F.: C14H14N2O4S
• Mol.Wt.: 306.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 53

• SZ CAT No: SZ-F010089

• CAS No:

  NA

• Mol.F.: C13H14NO6PS
• Mol.Wt.: 343.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 54

• SZ CAT No: SZ-F010090

• CAS No:

  NA

• Mol.F.: C12H11NO3S
• Mol.Wt.: 249.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 55

• SZ CAT No: SZ-F010091

• CAS No:

  1886961-39-2

• Mol.F.: C14H12N2O3S
• Mol.Wt.: 288.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 56

• SZ CAT No: SZ-F010092

• CAS No:

  NA

• Mol.F.: C12H9NO5S
• Mol.Wt.: 279.3
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 57

• SZ CAT No: SZ-F010093

• CAS No:

  NA

• Mol.F.: C16H16N2O3S
• Mol.Wt.: 316.4
• Inv. Status: Synthesis on demand

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• 

Febuxostat Impurity 58

• SZ CAT No: SZ-F010094

• CAS No:

  144060-84-4

• Mol.F.: C17H18N2O3S
• Mol.Wt.: 330.4
• Inv. Status: Synthesis on demand

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Febuxostat Impurity 59

• SZ CAT No: SZ-F010096

• CAS No:

  1643131-92-3

• Mol.F.: C18H21NO5S
• Mol.Wt.: 363.4
• Inv. Status: Synthesis on demand

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• 

Febuxostat Isobutyl Ester Impurity

• SZ CAT No: SZ-F010059

• CAS No:

  NA

• Mol.F.: C21H28N2O4S
• Mol.Wt.: 404.5
• Inv. Status: Synthesis on demand

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• 

Isopropyloxycarbonyl Febuxostat

• SZ CAT No: SZ-F010057

• CAS No:

  NA

• Mol.F.: C19H23NO5S
• Mol.Wt.: 377.5
• Inv. Status: Synthesis on demand

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• 

3-Descyano 3-Bromo-Febuxostat D9

• SZ CAT No: SZ-F010D03

• CAS No:

  NA

• Mol.F.: C15H7D9BrNO3S
• Mol.Wt.: 379.3
• Inv. Status: Synthesis on demand
• Rel. CAS No: 144060-40-2 (Unlabeled)

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3-Descyano Febuxostat D9

• SZ CAT No: SZ-F010D05

• CAS No:

  NA

• Mol.F.: C15H8D9NO3S
• Mol.Wt.: 300.4
• Inv. Status: Synthesis on demand

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• 

3-Descyano Febuxostat D9 Ethyl Ester

• SZ CAT No: SZ-F010D04

• CAS No:

  NA

• Mol.F.: C17H12D9NO3S
• Mol.Wt.: 328.0
• Inv. Status: Synthesis on demand
• Rel. CAS No: 144060-97-9 (Unlabeled)

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• 

Febuxostat D7

• SZ CAT No: SZ-F010D01

• CAS No:

  1285539-74-3

• Mol.F.: C16H9D7N2O3S
• Mol.Wt.: 323.4
• Inv. Status: Synthesis on demand

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• 

Febuxostat D9

• SZ CAT No: SZ-F010D02

• CAS No:

  1246819-50-0

• Mol.F.: C16H7D9N2O3S
• Mol.Wt.: 325.4
• Inv. Status: Synthesis on demand