发明人周伟,郑宇鹏,王建平. "Method for the Synthesis of 3,4-Bis[[(9R)-6'-methoxycinchonan-9-yl]amino]-3-cyclobutene-1,2-dione" [P]. 中国发明专利, 专利号 CN 112464907 A, 授权公告日 2016-08-12.
发明人孙丽萍,钱学锋,胡光. "A Process for Preparing High-Purity 3,4-Bis[[(9R)-6'-methoxycinchonan-9-yl]amino]-3-cyclobutene-1,2-dione" [P]. 中国发明专利, 专利号 CN 109514204 A, 授权公告日 2016-01-11.
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