发明人郭海燕,钱学锋,孙丽萍. "Method for the Synthesis of Sodium 1-(4-amino-2-sulfonatophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113857762 A, 授权公告日 2021-02-18.
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