发明人张德明,胡光,唐晓军. "Method for the Synthesis of 3,4-Thiophenedicarboxylic Anhydride" [P]. 中国发明专利, 专利号 CN 115986532 A, 授权公告日 2016-07-24.
发明人何建平,周伟,钱学锋. "A Process for Preparing High-Purity 3,4-Thiophenedicarboxylic Anhydride" [P]. 中国发明专利, 专利号 CN 109330961 B, 授权公告日 2022-09-03.
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