Mitsubishi Petrochemical Company Limited

Teijin Limited

Noriko Wada

Hiroshi Iwane

Makoto Takeda

Hiromi Ozaki

Masaki Saito

Hajime Izawa

Hiroshi Taniguchi

Shoichi Seo

Shiroh Inui

Nobuyoshi Maruyama

Kazuaki Isomura

Shin Kawano

Yasushige Yagura

Shigeru Ishihara

Kenji Takebayashi

An optically active compound represented by formula (I): ##STR1## wherein R.sup.1 represents an alkyl group having from 6 to 18 carbon atoms or an alkoxy group having from 6 to 18 carbon atoms; A represents ##STR2## or ##STR3## wherein ring ##STR4## represents a nitrogen-containing hetero-aromatic ring; n and m each represents 0 or 1; R.sup.2 represents an alkyl group having from 1 to 12 carbon atoms; and C* is an asymmetric carbon atom. The compound of formula (I) exhibits excellent physicochemical stability, a low temperature range for the chiral smectic C phase when used either alone or in combination with other compounds, and a rapid response.

Optically active compound

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Ibarki, Japan

Noriko Wada