Patent ID: 7951432

Claim:
A compound represented by formula (1): wherein R 1 is alkyl having 1 to 15 carbons, alkenyl having 2 to 15 carbons, alkoxy having 1 to 15 carbons, or alkenyloxy having 2 to 15 carbons; ring A 1 , ring A 2 , ring A 3 , ring A 4 , ring A 5 , and ring A 6 are each independently 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which arbitrary hydrogen is replaced by halogen; Z 1 , Z 2 , Z 3 , Z 4 , Z 5 , and Z 6 are each independently a single bond, —CH 2 CH 2 —, —CH═CH—, —C≡C—, —COO—, —CF 2 O—, —CH 2 O—, or —OCH 2 —; L 1 and L 2 are each independently hydrogen or fluorine; X 1 is fluorine, chlorine, —C≡N, —CF 3 , —CHF 2 , —CH 2 F, —OCF 3 , —OCHF 2 or —OCH 2 F; and l, m, n, o, p, and q are each independently 0 or 1, and l+m+n+o+p+q is 3.