发明人冯建国,刘建华,唐晓军. "Method for the Synthesis of 3-hydroxy-4-[(2-Methoxy-5-methyl-4-sulfophenyl)azo]-2,7-Naphthalenedisulfonic acid trisodium salt" [P]. 中国发明专利, 专利号 CN 116028462 B, 授权公告日 2016-03-06.
发明人冯建国,孙丽萍,何建平. "A Process for Preparing High-Purity 3-hydroxy-4-[(2-Methoxy-5-methyl-4-sulfophenyl)azo]-2,7-Naphthalenedisulfonic acid trisodium salt" [P]. 中国发明专利, 专利号 CN 113403188 B, 授权公告日 2015-09-08.
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