发明人胡光,张德明,郭海燕. "Method for the Synthesis of (R,S)-Nornicotine-d4 (pyridine-d4)" [P]. 中国发明专利, 专利号 CN 116123419 A, 授权公告日 2016-08-06.
发明人郑宇鹏,王建平,钱学锋. "A Process for Preparing High-Purity (R,S)-Nornicotine-d4 (pyridine-d4)" [P]. 中国发明专利, 专利号 CN 114699778 B, 授权公告日 2018-06-21.
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