67-56-1
甲醇
+
40461-93-6
→
~74%
114915-50-3
2-(methoxymethylidene)indene-1,3-dione
6328-17-2
(8ci,9ci)-1H-2-苯并吡喃-1,3,4-三酮
938-24-9
indene-1,2,3-trione