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US5047171A Optically active-2,5-diphenylpyridine 失效
光活性-2,5-二苯基吡啶

Optically active-2,5-diphenylpyridine
摘要:
A liquid crystal compound suitable as a material for ferroelectric liquid crystal display elements and a liquid crystal composition containing the same are provided, which liquid crystal compound is an optically active-2,5-diphenylpyridine expressed by the formula (I) ##STR1## wherein one of R.sup.1 and R.sup.2 is 1-20C alkenyl, alkynyl, alkoxy, alkenyloxy or alkynyloxy and the other is an optically active group; and X and Y each independently represent H, halogen or CN and at least one of X and Y is H.
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