anethole [ 1-(4-methoxyphenyl)propene,anethole, (E)-isomer,anethole, (Z)-isomer,p-propenylanisole,trans-anethole ] an isomer of estragole; structurally similar to CAPSAICIN; has some neurological and insecticidal and skin absorption effects; RN given refers to unspecified stereoisomer; structure in Merck Index, 9t