4-Acetamino-4-ethoxy-trans-glutaconsaeure-diethylester

乙基(2Z)-2,3-二溴丙烯酸酯

(Z)-1-acetylamino-3-bromo-prop-2-ene-1,1,3-tricarboxylic acid triethyl ester

丙炔酸乙酯

2-(Phenyl-hydrazono)-pentanedioic acid diethyl ester