| abstract |
(57) [Abstract] [Problem] The viscosity is small, the helical twisting ability is large, Provided is a compound useful as a liquid crystal composition. The formula R 1 -A 1 -CHX-Y-A 2- (A 3) a compound represented by m -R 2, liquid crystal composition containing the compounds, and liquid crystal electro-optical device using the liquid crystal composition. Here, R 1 is a hydrogen atom or the like, R 2 is an alkoxy group or the like, 1 , A 2 and A 3 are 1,4-phenylene groups and the like, and X is -CH 3 or —CF 3 , Y is —CH 2 O— or the like, and m is 0 or 1. |