A novel bipyrimidinyl derivative which is superior in practical properties and useful as a high temperature liquid crystal component constituting a physically and chemically stable liquid crystal composition is provided, which bipyrimidinyl derivative is a 2,5'-disubstituted-5,2'-bipyrimidinyl expressed by the formula ##STR1## wherein ##STR2## X represents a halogen atom of F, Cl or Br or cyano group or an alkyl group or an alkoxy group each having 1 to 10 carbon atoms and R represents an alkyl group or an alkoxy group each having 1 to 10 carbon atoms.
提供了一种新颖的双
嘧啶衍
生物,其在实际应用中具有优越的性能,并可用作高温液晶组分,构成物理和
化学稳定的液晶组合物。该双
嘧啶衍
生物是一种由公式##STR1##表示的2,5'-二取代-5,2'-双
嘧啶基,其中##STR2##X代表F、Cl或Br的卤素原子,或
氰基或具有1至10个碳原子的烷基或烷氧基,R代表具有1至10个碳原子的烷基或烷氧基。