Roberts E F, Stevens L M, Hughes D C. "Method for the Synthesis of 6,6'-(Piperazine-1,4-diyl)bis(3-chloroaniline)" [P]. US Patent, US 11856944 B2, 2017-11-22.
发明人张德明,郭海燕,刘建华. "A Process for Preparing High-Purity 6,6'-(Piperazine-1,4-diyl)bis(3-chloroaniline)" [P]. 中国发明专利, 专利号 CN 112479336 A, 授权公告日 2025-05-28.
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