1,8-bis-formylamino-octane-1,1,8,8-tetracarboxylic acid tetramethyl ester

formylamino-prop-2-ynyl-malonic acid dimethyl ester

1,8-bis-formylamino-octa-3,5-diyne-1,1,8,8-tetracarboxylic acid tetramethyl ester

α,α'-dibromosebacate de dimethyle

2,9-dibromo-decanedioic acid