Vernolic acid (leukotoxin) is an organic compound and a fatty acid. This monounsaturated long chain carboxylic acid contains an epoxide and consists of two optical isomers. The (+) optical isomer's IUPAC designation is (+)-(12S,13R)-epoxy-cis-9-octadecenoic acid; it is also termed 12S,13R-EpOME, cis-12-epoxyoctadeca-cis-9-enoic acid, and (9Z)-(12S,13R)-12,13-epoxyoctadecenoic acid. The (-) isomer's IUPAC designation is (-)-(12R,13S)-epoxy-cis-9-octadecenoic acid; it is also termed 12R,13S-EpOME, cis-12-epoxyoctadeca-cis-9-enoic acid, and (9Z)-(12R,13S)-12,13-epoxyoctadecenoic acid. It is an isomer of coronaric acid, which is itself the (+) and (-), i.e. R,S and S,R optical isomers of 9,10-epoxy-12Z-octadecenoic acid (also termed 9(10)-EpOME and (+/-)-9(10)-epoxy-12Z-octadecenoic acid). Vernolic acid was first definitively characterized in 1954. It is the key component in vernonia oil, which is produced in abundance by the genera Vernonia and Euphorbia and is a potentially useful biofeedstock.

CAS：503-07-1
中文别名：
英文别名：cis-Vaccenic acid;(9Z)-11-[(2S,3R)-3-Pentyl-2-oxiranyl]-9-undecenoic acid;cis-11-tetradecenal;11Z-octadecenoic acid;tetradec-11c-enal;cis-12,13-epoxyoctadeca-cis-9-enoic acid;asclepic acid;
分子式：C18H32O3
分子量：296.445
精确质量：296.235
Psa：49.83
Logp：5.0957

UNII：FR42854EPW

密度：0.969g/cm3
沸点：395.8ºC at 760 mmHg
闪点：130ºC
折射率：1.478
蒸汽压：2.29E-07mmHg at 25°C

海关编码：2918990090