The method of preparation of the key intermediate, 4 amino 1 methyl 3 n propylpyrazole 5 carboxamide(6)was improved.
改进了重要中间体4氨基1甲基3 正丙基吡唑5酰胺（6 ）的合成工艺。
The method of preparation of the key intermediate, 4 amino 1 methyl 3 n propylpyrazole 5 carboxamide(6)was improved.
改进了重要中间体4氨基1甲基3 正丙基吡唑5酰胺（6 ）的合成工艺。
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