4-ethyl-5-methoxy-2,4-dihydro-3H-1,2,4-triazol-3-on-2-carboxamide 、
3-ethoxycarbonyl-2-methylthiophen-4-sulfonic acid chloride 生成 4-[[[(4,5-dihydro-4-ethaneyl-3-methoxy-5-oxo-1H-1,2,4-triazol-1-yl)-carbonyl]-amino]-sulfonyl]-5-methyl-3-thiophenecarboxylic acid-ethyl ester