非布索坦杂质   Febuxostat impurity

FBT-A  2-(3-carbamoyl-4-isobutoxyphenyl)-4methylthiazole-5-carboxylic acid  1239233-86-3

FBT-B  2-(3-carboxy-4-isobutoxyphenyl)-4methylthiazole-5-carboxylic acid  1239233-87-4

FBT-C  ethyl 2-(3-cyano-4-hydroxyphenyl)-4methylthiazole-5-carboxylate  161798-02-3

FBT-E  2-(4-isobutoxyphenyl)-4-methylthiazole5-carboxylic acid  1206550-99-3

FBT-F  ethyl 2-(4-isobutoxyphenyl)-4methylthiazole-5-carboxylate  144060-97-9

FBT-G  ethyl 2-(3-cyano-4-isobutoxyphenyl)-4methylthiazole-5-carboxylate  160844-75-7

FBT-H  ethyl 2-(4-hydroxyphenyl)-4methylthiazole-5-carboxylate  161797-99-5

FBT-I  2-(4-butoxy-3-cyanophenyl)-4methylthiazole-5-carboxylic acid  1657014-33-9

FBT-J  2-(4-(sec-butoxy)-3-cyanophenyl)-4methylthiazole-5-carboxylic acid  1335202-59-9

FBT-K  2-(3-cyano-4-isopropoxyphenyl)-4methylthiazole-5-carboxylic acid  144060-52-6

FBT-L  isopropyl 2-(3-cyano-4isobutoxyphenyl)-4-methylthiazole-5carboxylate  1346238-10-5

FBT-O  4-isobutoxybenzene-1,3bis(carbothioamide)  1330632-46-6

FBT-M  4-hydroxyisophthalonitrile  34133-58-9

FBT-R  (Z)-2-(3-((hydroxyimino)methyl)-4isobutoxyphenyl)-4-methylthiazole-5carboxylic acid  1350352-70-3

FBT-T  2-(3-cyano-4-hydroxyphenyl)-4methylthiazole-5-carboxylic acid  407582-48-3

FBT-U  2-(3-cyano-4-propoxyphenyl)-4methylthiazole-5-carboxylic acid  1530308-87-2

FBT- V  2-(3-cyano-4-isobutoxyphenyl)-4methylthiazole-5-carboxylic acid  144060-53-7