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发明人沈红梅,郭海燕,杨光. "Method for the Synthesis of Ethyl 2-(6,7-dimethoxy-3,4-dihydroisoquinolin-1(2H)-ylidene)acetate" [P]. 中国发明专利, 专利号 CN 109000561 B, 授权公告日 2017-08-01.
发明人罗永刚,朱建伟,徐明华. "A Process for Preparing High-Purity Ethyl 2-(6,7-dimethoxy-3,4-dihydroisoquinolin-1(2H)-ylidene)acetate" [P]. 中国发明专利, 专利号 CN 113920959 B, 授权公告日 2021-01-09.
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