156629-58-2

Upstream product

• 616-82-0 3-nitro-4-hydroxybenzoic acid 
• 99-42-3 methyl (4-hydroxy-3-nitro)benzoate 
• 528607-34-3 methyl 4-isobutyloxy-3-nitrobenzoate 

Downstream Products

• 528607-21-8 2-(4-isobutoxy-3-nitrophenyl)-3H-imidazo[4,5-c]pyridine 
• 528607-19-4 2-(4-Isobutoxy-3-nitrophenyl)benzoxazole-7-carboxylic acid 
• 528607-12-7 4-Hydroxy-2-(4-isobutyloxy-3-nitrophenyl)-1,3-benzoxazole 

Relevant academic research and scientific papers

XANTHINE OXIDASE INHIBITORS

The invention relates to compounds of the following formula (I) or their salts: in which R1 represents OR4 or others, in which R4 is an alkyl group having 1-8 carbon atoms which may have a substituent or the like; R2 is halogen, nitro, cyano, carboxyl, or the like; R3 is hydrogen, halogen, hydroxyl, amino, carboxyl, or the like; X is NR11, oxygen, or sulfur, in which R11 is hydrogen, or an alkyl group having 1-8 carbon atom which may have a substituent; and each of Y and Z is CR12 or nitrogen, in which R12 has the same meaning as R3 above, and a xanthine oxidase inhibitor containing the compound as an active ingredient.