Sterculic acid methyl ester is an ester form of sterculic acid (Item No. 26735), which is an inhibitor of Δ9 desaturase.1 Sterculic acid methyl ester (0.75 mM) inhibits the growth of, and is toxic to, the bacteria R. opacus.2 It decreases the fatty acid content, increases the ratio of palmitate to other fatty acids, and decreases the levels of stearate and oleate in R. opacus when used at concentrations of 0.25 or 0.5 mM. Sterculic acid methyl ester (50 ppm) has a synergistic effect on increased tumor growth induced by aflatoxin Q1 in rainbow trout. [Matreya, LLC. Catalog No. 1236]WARNING This product is not for human or veterinary use.