发明人冯建国,唐晓军,杨光. "Method for the Synthesis of 6-Aminopyrimidine-4-carboxylic acid compound with sulfuric acid (2:1)" [P]. 中国发明专利, 专利号 CN 114979684 B, 授权公告日 2016-09-26.
发明人沈红梅,林芳,钱学锋. "A Process for Preparing High-Purity 6-Aminopyrimidine-4-carboxylic acid compound with sulfuric acid (2:1)" [P]. 中国发明专利, 专利号 CN 117648189 B, 授权公告日 2017-04-27.
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