发明人徐明华,韩伟,罗永刚. "Method for the Synthesis of 1-methyl-1H-pyrazole-4-sulfonic acid" [P]. 中国发明专利, 专利号 CN 115518639 A, 授权公告日 2022-04-08.
发明人刘建华,胡光,唐晓军. "A Process for Preparing High-Purity 1-methyl-1H-pyrazole-4-sulfonic acid" [P]. 中国发明专利, 专利号 CN 116346777 B, 授权公告日 2017-07-23.
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