发明人周伟,胡光,罗永刚. "Method for the Synthesis of 2-amino-4-hydroxy-thiophene-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 114509248 B, 授权公告日 2017-09-04.
发明人郭海燕,张德明,杨光. "A Process for Preparing High-Purity 2-amino-4-hydroxy-thiophene-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 115545282 B, 授权公告日 2024-05-13.
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