发明人王建平,何建平,韩伟. "Method for the Synthesis of 2-(4-Hydroxy-6-methyl-3-nitro-2-oxopyridin-1(2H)-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 108071154 B, 授权公告日 2016-01-15.
发明人杨光,何建平,胡光. "A Process for Preparing High-Purity 2-(4-Hydroxy-6-methyl-3-nitro-2-oxopyridin-1(2H)-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 108638965 B, 授权公告日 2016-01-08.
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