93913-58-7
4-methylidene-5-oxooxolane-3-carboxylic acid
→
~70%
89533-85-7
4-甲基-5-氧基-四氢呋喃-3-羧酸
488-20-0
2,3-dimethylidenebutanedioic acid
56575-56-5
4-bromo-but-1-ene-2,3-dicarboxylic acid
71195-11-4
triethyl prop-2-ene-1,1,2-tricarboxylate
30313-07-6
triethyl prop-1-ene-1,1,2-tricarboxylate
56643-56-2
diethyl 4-methylidene-5-oxooxolane-3,3-dicarboxylate