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发明人郭海燕,胡光,周伟. "Method for the Synthesis of 1-hydroxy-6-sulfanylidene-1,6-dihydropyridine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114958983 B, 授权公告日 2017-09-04.
发明人郭海燕,马晓峰,王建平. "A Process for Preparing High-Purity 1-hydroxy-6-sulfanylidene-1,6-dihydropyridine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115005876 A, 授权公告日 2024-07-07.
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