The compound provided by the present invention is a polymerizable optically active compound represented by Formula (1): ##STR00001## wherein R.sup.1 is hydrogen, chlorine or bromine; R.sup.2 is hydrogen, methyl or ethyl; A.sup.1 is 1,4-phenylene, biphenyl-4,4'-diyl, naphthalene-2,6-diyl or pyridine-2,5-diyl, provided that in the 1,4-phenylene arbitrary hydrogen may be replaced by chlorine, bromine or fluorine, and in the biphenyl-4,4'-diyl arbitrary hydrogen may be replaced by chlorine, bromine or fluorine; and X.sup.1 is a single bond, --CH.dbd.CH-- or --CH.sub.2CH.sub.2--.