Fischer A B, Johnson M A, Mueller T. "一种的合成方法" [P]. US Patent, US 9346399 B2, 2020-02-10.
发明人李文辉,孙丽萍,朱建伟. "Method for the Synthesis of [(E)-[1-(4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)ethylidene]amino]thiourea" [P]. 中国发明专利, 专利号 CN 111725917 B, 授权公告日 2019-07-05.
发明人孙丽萍,徐明华,朱建伟. "A Process for Preparing High-Purity [(E)-[1-(4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)ethylidene]amino]thiourea" [P]. 中国发明专利, 专利号 CN 112429082 A, 授权公告日 2017-03-24.
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