发明人杨光,马晓峰,高志强. "Method for the Synthesis of 3-Ethyl-2-(4-(3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4(5H)-ylidene)but-2-en-1-ylidene)-2,3-dihydrobenzo[d]oxazole-5-sulfonic acid" [P]. 中国发明专利, 专利号 CN 112828847 B, 授权公告日 2021-06-11.
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