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发明人黄志刚,钱学锋,郭海燕. "Method for the Synthesis of 9-Butyl-6-chloro-9H-purine" [P]. 中国发明专利, 专利号 CN 112115884 A, 授权公告日 2015-08-06.
发明人周伟,马晓峰,冯建国. "A Process for Preparing High-Purity 9-Butyl-6-chloro-9H-purine" [P]. 中国发明专利, 专利号 CN 114879318 A, 授权公告日 2019-08-20.
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