发明人黄志刚,赵玉洁,徐明华. "Method for the Synthesis of 2-(2,6-Diisopropylphenyl)-3,3-dimethyl-2-azaspiro[4.5]dec-1-en-2-ium Hydrogen Dichloride" [P]. 中国发明专利, 专利号 CN 109459105 A, 授权公告日 2017-04-09.
发明人赵玉洁,韩伟,罗永刚. "A Process for Preparing High-Purity 2-(2,6-Diisopropylphenyl)-3,3-dimethyl-2-azaspiro[4.5]dec-1-en-2-ium Hydrogen Dichloride" [P]. 中国发明专利, 专利号 CN 116976883 B, 授权公告日 2018-02-23.
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