(Z)-11-Octadecenoic acid 11(Z)-Octadecenoic acid 11-Octadecenoic acid, (11Z)- 11-Octadecenoic acid, (Z)- 11-cis-Octadecenoic acid 11Z-Octadecenoic acid 506-17-2 Asclepic acid D11-cis-Octadecenoic acid cis-11-Octadecenoic acid cis-11-Vaccenic acid cis-D11-Octadecenoic acid cis-Vaccenic acid