发明人郭海燕,沈红梅,郑宇鹏. "Method for the Synthesis of 4-Bromo-1,3-dimethyl-1h-pyrazole-5-carbohydrazide" [P]. 中国发明专利, 专利号 CN 117238473 B, 授权公告日 2018-02-13.
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