An optically inactive cyclobutanecarboxylic acid derivative of the general formula ##STR1## wherein R.sup.1 is a hydrogen atom or a straight or branched chain alkyl group having 1-14 carbon atoms, R.sup.2 is a straight or branched chain alkyl group having 1-14 carbon atoms, X.sup.1 and X.sup.2 independently represent hydrogen or fluorine atoms, as well as a liquid crystalline composition containing at least one such derivative.
一种光学上不活性的
环丁烷羧酸衍
生物,其通式为##STR1##其中R.sup.1是氢原子或具有1-14个碳原子的直链或支链烷基基团,R.sup.2是具有1-14个碳原子的直链或支链烷基基团,X.sup.1和X.sup.2分别代表氢或
氟原子,以及含有至少一种这种衍
生物的液晶组合物。