2-Cyclopentene-1-tridecanoic acid, ethyl ester 2-Cyclopentene-1-tridecanoic acid, ethyl ester, (S)- 623-32-5 Chaulmoogric acid ethyl ester Chaulmoogric acid, ethyl ester EINECS 210-786-9 Ethy6l chaulmoograte Ethyl 13-(cyclopent-2-enyl)tridecanoate Ethyl 2-cyclopentene-1-tridecanoate NSC 38010