发明人徐明华,郭海燕,刘建华. "Method for the Synthesis of 9-(2-(Ethoxycarbonyl)phenyl)-3,6-bis(ethylamino)-2,7-dimethylxanthylium ethyl sulfate" [P]. 中国发明专利, 专利号 CN 117067663 B, 授权公告日 2018-06-19.
发明人高志强,钱学锋,周伟. "A Process for Preparing High-Purity 9-(2-(Ethoxycarbonyl)phenyl)-3,6-bis(ethylamino)-2,7-dimethylxanthylium ethyl sulfate" [P]. 中国发明专利, 专利号 CN 112105175 A, 授权公告日 2025-01-26.
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