发明人胡光,杨光,郑宇鹏. "Method for the Synthesis of 2-{2-methyl-5-oxo-4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidin-4-yl}acetic acid" [P]. 中国发明专利, 专利号 CN 115364806 A, 授权公告日 2015-06-09.
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