发明人胡光,钱学锋,何建平. "Method for the Synthesis of Ethyl 4-Chloropyrimido[5,4-B]Indolizine-5-Carboxylate" [P]. 中国发明专利, 专利号 CN 112455048 B, 授权公告日 2017-07-17.
发明人韩伟,罗永刚,杨光. "A Process for Preparing High-Purity Ethyl 4-Chloropyrimido[5,4-B]Indolizine-5-Carboxylate" [P]. 中国发明专利, 专利号 CN 109131357 B, 授权公告日 2018-10-26.
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