This polyunsaturated fatty acid mixture contains 18 naturally occurring omega fatty acids and 3 saturated fatty acids. They are all methyl esters for the qualitative identification of unknowns. The product is a naturally occurring mixture from Menhaden fish oil and is an excellent standard for identifying unknown omega fatty acids in samples.1 Research has shown a reduction in some cancers with the use of fish oils2 but it can cause bacterial complications.3 Because it is extracted from natural materials, relative peak sizes for the mix may vary from lot to lot. This is a qualitative mixture and should not be used for quantitative purposes. Composition: qualitative mixture,C14:0,C16:0,C16:1ω7,C16:2ω4,C16:3ω4,C16:4ω1,C18:0,C18:1ω9,C18:1ω7,C18:2ω6,C18:2ω4,C18:3ω4,C18:3ω3,C18:4ω3,C20:1ω9,C20:4ω6,C20:4ω3,C20:5ω3,C21:5ω3,C22:5ω3,C22:6ω3