897-41-6
1,3-Azulenedicarboxylic acid, 2-hydroxy-, 1,3-diethyl ester
→
~50%
52802-64-9
diethyl 6-bromo-2-hydroxyazulene-1,3-dicarboxylate
52802-65-0
diethyl 6-bromo-2-methoxy-1,3-azulenedicarboxylate