Febuxostat

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Pharmaceutical Reference Standards

Febuxostat

CAT. No.	CP-F7000
CAS. No.	144060-53-7
Mol. F.	C16H16N2O3S
Mol. Wt.	316.38
Stock Status:	In Stock

Febuxostat Amide Impurity

CAT. No.	CP-F7001
CAS. No.	1239233-86-3
Mol. F.	C16H18N2O4S
Mol. Wt.	334.39
Stock Status:	In Stock

Febuxostat Descyano Impurity

CAT. No.	CP-F7002
CAS. No.	1206550-99-3
Mol. F.	C15H17NO3S
Mol. Wt.	291.37
Stock Status:	In Stock

Febuxostat Butyl Ether Analog

CAT. No.	CP-F7003
CAS. No.	1657014-33-9
Mol. F.	C16H16N2O3S
Mol. Wt.	316.37
Stock Status:	In Stock

Febuxostat sec-Butyl Ether Acid Impurity

CAT. No.	CP-F7004
CAS. No.	1335202-59-9
Mol. F.	C16H16N2O3S
Mol. Wt.	316.38
Stock Status:	In Stock

Febuxostat 4-Hydroxy Acid Impurity

CAT. No.	CP-F7005
CAS. No.	407582-48-3
Mol. F.	C12H8N2O3S
Mol. Wt.	260.27
Stock Status:	In Stock

Febuxostat 4-Hydroxy Ethyl Ester

CAT. No.	CP-F7006
CAS. No.	161798-02-3
Mol. F.	C14H12N2O3S
Mol. Wt.	288.32
Stock Status:	Custom Synthesis

Febuxostat Bromo Impurity

CAT. No.	CP-F7007
CAS. No.	144060-40-2
Mol. F.	C15H16BrNO3S
Mol. Wt.	370.26
Stock Status:	Custom Synthesis

Febuxostat Descarboxy Impurity

CAT. No.	CP-F7008
CAS. No.	1335202-60-2
Mol. F.	C15H16N2OS
Mol. Wt.	272.37
Stock Status:	Custom Synthesis

Febuxostat Acyl-beta-D-glucuronide

CAT. No.	CP-F7009
CAS. No.	1351692-92-6
Mol. F.	C22H24N2O9S
Mol. Wt.	492.50
Stock Status:	Custom Synthesis

Febuxostat Dicarboxylic Acid Impurity

CAT. No.	CP-F7010
CAS. No.	1239233-87-4
Mol. F.	C16H17NO5S
Mol. Wt.	335.37
Stock Status:	In Stock

Febuxostat Ethyl ester impurity

CAT. No.	CP-F7011
CAS. No.	160844-75-7
Mol. F.	C18H20N2O3S
Mol. Wt.	344.43
Stock Status:	In Stock

Febuxostat Isopropyl ester impurity

CAT. No.	CP-F7012
CAS. No.	1346238-10-5
Mol. F.	C19H22N2O3S
Mol. Wt.	358.46
Stock Status:	Custom Synthesis

Febuxostat Methyl ester impurity

CAT. No.	CP-F7013
CAS. No.	923942-34-1
Mol. F.	C17H18N2O3S
Mol. Wt.	330.40
Stock Status:	In Stock

O-Desisobutyl-O-n-propyl Febuxostat

CAT. No.	CP-F7014
CAS. No.	1530308-87-2
Mol. F.	C15H14N2O3S
Mol. Wt.	302.35
Stock Status:	Custom Synthesis

3-Descyano-3-formyl Febuxostat

CAT. No.	CP-F7015
CAS. No.	144060-62-8
Mol. F.	C16H17NO4S
Mol. Wt.	319.38
Stock Status:	In Stock

Febuxostat Descyano Hydroxy Impurity

CAT. No.	CP-F7016
CAS. No.	886501-78-6
Mol. F.	C11H9NO3S
Mol. Wt.	235.26
Stock Status:	In Stock

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

CAT. No.	CP-F7017
CAS. No.	2073891-59-3
Mol. F.	C15H13NO5S
Mol. Wt.	319.33
Stock Status:	In Stock

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

CAT. No.	CP-F7018
CAS. No.	161798-01-2
Mol. F.	C14H13NO4S
Mol. Wt.	291.32
Stock Status:	In Stock

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

CAT. No.	CP-F7019
CAS. No.	161798-03-4
Mol. F.	C18H21NO4S
Mol. Wt.	347.43
Stock Status:	In Stock

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

CAT. No.	CP-F7020
CAS. No.	1271738-74-9
Mol. F.	C18H22N2O4S
Mol. Wt.	362.44
Stock Status:	In Stock

Methyl 4-Chloroacetoacetate

CAT. No.	CP-F7021
CAS. No.	32807-28-6
Mol. F.	C5H7ClO3
Mol. Wt.	150.56
Stock Status:	In Stock

Febuxostat Dithioamide Impurity

CAT. No.	CP-F7022
CAS. No.	1330632-46-6
Mol. F.	C12H16N2OS2
Mol. Wt.	268.39
Stock Status:	Custom Synthesis

Febuxostat Impurity 3

CAT. No.	CP-F7023
CAS. No.	1330632-47-7
Mol. F.	C22H24N2O5S2
Mol. Wt.	460.56
Stock Status:	Custom Synthesis

Febuxostat Butyl Ester Impurity

CAT. No.	CP-F7024
CAS. No.	1619982-02-3
Mol. F.	C20H24N2O3S
Mol. Wt.	372.48
Stock Status:	Custom Synthesis

Isopropyloxycarbonyl Febuxostat

CAT. No.	CP-F7025
CAS. No.	NA
Mol. F.	C19H23NO5S
Mol. Wt.	377.46
Stock Status:	Custom Synthesis

Febuxostat Ethyl Ester Amide Impurity

CAT. No.	CP-F7026
CAS. No.	1346238-15-0
Mol. F.	C18H22N2O4S
Mol. Wt.	362.44
Stock Status:	Custom Synthesis

Febuxostat Isobutyl Ester Impurity

CAT. No.	CP-F7027
CAS. No.	NA
Mol. F.	C20H24N2O3S
Mol. Wt.	372.48
Stock Status:	Custom Synthesis

Ethyl 2,2-dichloro-3-Oxobutanoate

CAT. No.	CP-F7028
CAS. No.	6134-66-3
Mol. F.	C6H8Cl2O3
Mol. Wt.	199.03
Stock Status:	Custom Synthesis

3-Hydroxybenzothioamide

CAT. No.	CP-F7029
CAS. No.	104317-54-6
Mol. F.	C7H7NOS
Mol. Wt.	153.2
Stock Status:	Custom Synthesis

2-Hydroxybenzothioamide

CAT. No.	CP-F7030
CAS. No.	7133-90-6
Mol. F.	C7H7NOS
Mol. Wt.	153.2
Stock Status:	Custom Synthesis

Ethyl 2-Chloracetoacetate

CAT. No.	CP-F7031
CAS. No.	609-15-4
Mol. F.	C6H9ClO3
Mol. Wt.	164.59
Stock Status:	Custom Synthesis

4-Hydroxybenzothioamide

CAT. No.	CP-F7032
CAS. No.	25984-63-8
Mol. F.	C7H7NOS
Mol. Wt.	153.2
Stock Status:	Custom Synthesis

1-(3-Hydroxyphenyl)propan-1-one

CAT. No.	CP-F7033
CAS. No.	13103-80-5
Mol. F.	C9H10O2
Mol. Wt.	150.18
Stock Status:	In Stock

Ethyl 2,4-dimethylthiazole-5-carboxylate

CAT. No.	CP-F7034
CAS. No.	7210-77-7
Mol. F.	C8H11NO2S
Mol. Wt.	185.24
Stock Status:	Custom Synthesis

Febuxostat Dithiazole Acid Impurity

CAT. No.	CP-F7035
CAS. No.	1330632-48-8
Mol. F.	C20H20N2O5S2
Mol. Wt.	432.51
Stock Status:	Custom Synthesis

Febuxostat Isopropyl Ether Analog

CAT. No.	CP-F7036
CAS. No.	144060-52-6
Mol. F.	C15H14N2O3S
Mol. Wt.	302.35
Stock Status:	Custom Synthesis

Febuxostat Tert-butoxy Acid

CAT. No.	CP-F7037
CAS. No.	2418591-43-0
Mol. F.	C16H16N2O3S
Mol. Wt.	316.38
Stock Status:	Custom Synthesis

Febuxostat Acyl-Β-D-Glucuronide

CAT. No.	CP-F7038
CAS. No.	NA
Mol. F.	C22H24N2O9S
Mol. Wt.	492.5
Stock Status:	Custom Synthesis

3-Descyano-3-ethoxycarbonyl Febuxostat

CAT. No.	CP-F7039
CAS. No.	2476465-11-7
Mol. F.	C18H21NO5S
Mol. Wt.	363.43
Stock Status:	Custom Synthesis

Febuxostat Descyano Ethyl Ester

CAT. No.	CP-F7040
CAS. No.	144060-97-9
Mol. F.	C17H21NO3S
Mol. Wt.	319.42
Stock Status:	Custom Synthesis

Febuxostat Descyano Hydroxy Ethyl Ester

CAT. No.	CP-F7041
CAS. No.	161797-99-5
Mol. F.	C13H13NO3S
Mol. Wt.	263.31
Stock Status:	In Stock

4-Nitrophthalonitrile

CAT. No.	CP-F7042
CAS. No.	31643-49-9
Mol. F.	C8H3N3O2
Mol. Wt.	173.13
Stock Status:	Custom Synthesis

Febuxostat Impurity 19

CAT. No.	CP-F7043
CAS. No.	2375033-35-3
Mol. F.	C18H20N2O3S
Mol. Wt.	344.43
Stock Status:	Custom Synthesis

3-Cyano-4-isobutoxybenzothioamide

CAT. No.	CP-F7044
CAS. No.	163597-57-7
Mol. F.	C12H14N2OS
Mol. Wt.	234.32
Stock Status:	Custom Synthesis

Febuxostat Impurity 21

CAT. No.	CP-F7045
CAS. No.	1346238-12-7
Mol. F.	C16H14N2O3S
Mol. Wt.	314.36
Stock Status:	Custom Synthesis

Febuxostat Impurity 24

CAT. No.	CP-F7046
CAS. No.	2428631-65-4
Mol. F.	C17H15N3O3S
Mol. Wt.	341.39
Stock Status:	Custom Synthesis

Febuxostat Amide Methyl Ester

CAT. No.	CP-F7047
CAS. No.	1643131-89-8
Mol. F.	C17H20N2O4S
Mol. Wt.	348.42
Stock Status:	Custom Synthesis

Febuxostat Impurity 26

CAT. No.	CP-F7048
CAS. No.	2230270-05-8
Mol. F.	C18H20N2O3S
Mol. Wt.	344.43
Stock Status:	Custom Synthesis

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

CAT. No.	CP-F7050
CAS. No.	1350352-70-3
Mol. F.	C16H18N2O4S
Mol. Wt.	334.39
Stock Status:	In Stock

Ethyl 2-(4-butoxy-3-formylphenyl)

CAT. No.	CP-F7051
CAS. No.	2230270-03-6
Mol. F.	C18H21NO4S
Mol. Wt.	347.43
Stock Status:	Custom Synthesis

Febuxostat DEE Impurity

CAT. No.	CP-F7052
CAS. No.	1643131-93-4
Mol. F.	C20H25NO5S
Mol. Wt.	391.48
Stock Status:	Custom Synthesis

4-(4-Methylthiazol-2-yl)phenol

CAT. No.	CP-F7053
CAS. No.	138330-01-5
Mol. F.	C10H9NOS
Mol. Wt.	191.25
Stock Status:	Custom Synthesis

Rel. Cas No: 29302-63-4 (HCl salt) ; 1172835-03-8 (HBr salt)

Febuxostat Impurity 33

CAT. No.	CP-F7054
CAS. No.	1312815-35-2
Mol. F.	C12H9NO4S
Mol. Wt.	263.27
Stock Status:	Custom Synthesis

Febuxostat Impurity 38

CAT. No.	CP-F7055
CAS. No.	2476465-06-0
Mol. F.	C17H19NO5S
Mol. Wt.	349.4
Stock Status:	Custom Synthesis

Febuxostat Hemihydrate

CAT. No.	CP-F7056
CAS. No.	442664-09-7
Mol. F.	C16H16N2O3S : 1/2(H2O)
Mol. Wt.	316.38 : 1/2(18.02)
Stock Status:	Please Enquire

Rel. Cas No: 144060-53-7 (free base)

Febuxostat Impurity 39

CAT. No.	CP-F7057
CAS. No.	2646683-37-4
Mol. F.	C15H15NO4S
Mol. Wt.	305.35
Stock Status:	Custom Synthesis

Febuxostat Impurity 40

CAT. No.	CP-F7058
CAS. No.	407582-49-4
Mol. F.	C16H14N2O5S
Mol. Wt.	346.36
Stock Status:	Custom Synthesis

Febuxostat Impurity 41

CAT. No.	CP-F7059
CAS. No.	407582-47-2
Mol. F.	C16H16N2O4S
Mol. Wt.	332.37
Stock Status:	Custom Synthesis

Febuxostat Impurity 42

CAT. No.	CP-F7060
CAS. No.	887945-96-2
Mol. F.	C16H16N2O4S
Mol. Wt.	332.37
Stock Status:	Custom Synthesis

Ethyl 2,4-Dichloro-3-Oxobutanoate

CAT. No.	CP-F7061
CAS. No.	88-00-6
Mol. F.	C6H8Cl2O3
Mol. Wt.	199.03
Stock Status:	Custom Synthesis

a b c d e f g h i j k l m n o p q r s t u v w x y z

Febuxostat

Pharmaceutical Reference Standards

Febuxostat

Febuxostat Amide Impurity

Febuxostat Descyano Impurity

Febuxostat Butyl Ether Analog

Febuxostat sec-Butyl Ether Acid Impurity

Febuxostat 4-Hydroxy Acid Impurity

Febuxostat 4-Hydroxy Ethyl Ester

Febuxostat Bromo Impurity

Febuxostat Descarboxy Impurity

Febuxostat Acyl-beta-D-glucuronide

Febuxostat Dicarboxylic Acid Impurity

Febuxostat Ethyl ester impurity

Febuxostat Isopropyl ester impurity

Febuxostat Methyl ester impurity

O-Desisobutyl-O-n-propyl Febuxostat

3-Descyano-3-formyl Febuxostat

Febuxostat Descyano Hydroxy Impurity

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

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

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

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

Methyl 4-Chloroacetoacetate

Febuxostat Dithioamide Impurity

Febuxostat Impurity 3

Febuxostat Butyl Ester Impurity

Isopropyloxycarbonyl Febuxostat

Febuxostat Ethyl Ester Amide Impurity

Febuxostat Isobutyl Ester Impurity

Ethyl 2,2-dichloro-3-Oxobutanoate

3-Hydroxybenzothioamide

2-Hydroxybenzothioamide

Ethyl 2-Chloracetoacetate

4-Hydroxybenzothioamide

1-(3-Hydroxyphenyl)propan-1-one

Ethyl 2,4-dimethylthiazole-5-carboxylate

Febuxostat Dithiazole Acid Impurity

Febuxostat Isopropyl Ether Analog

Febuxostat Tert-butoxy Acid

Febuxostat Acyl-Β-D-Glucuronide

3-Descyano-3-ethoxycarbonyl Febuxostat

Febuxostat Descyano Ethyl Ester

Febuxostat Descyano Hydroxy Ethyl Ester

4-Nitrophthalonitrile

Febuxostat Impurity 19

3-Cyano-4-isobutoxybenzothioamide

Febuxostat Impurity 21

Febuxostat Impurity 24

Febuxostat Amide Methyl Ester

Febuxostat Impurity 26

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

Ethyl 2-(4-butoxy-3-formylphenyl)

Febuxostat DEE Impurity

4-(4-Methylthiazol-2-yl)phenol

Febuxostat Impurity 33

Febuxostat Impurity 38

Febuxostat Hemihydrate

Febuxostat Impurity 39

Febuxostat Impurity 40

Febuxostat Impurity 41

Febuxostat Impurity 42

Ethyl 2,4-Dichloro-3-Oxobutanoate