发明人林芳,沈红梅,赵玉洁. "Method for the Synthesis of 4-(2-Hydroxyethyl)-3-methyl-5-oxo-2,5-dihydro-1H-pyrazole-1-carboximidamide" [P]. 中国发明专利, 专利号 CN 109295545 A, 授权公告日 2018-09-09.
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