发明人钱学锋,周伟,孙丽萍. "Method for the Synthesis of 3',6'-Bis(dimethylamino)-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthene]-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111006443 B, 授权公告日 2024-11-13.
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