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Is 5-Hexen-2-one vegan?

5-Hexen-2-one

Vegan

5-Hexen-2-one is a synthetic organic ketone used as a fragrance and flavor ingredient.

Also known as Hex-5-en-2-one
INCI name 5-Hexen-2-one
CAS number 78-59-1
EC number 203-675-1
CosIng ID 40193
Last reviewed 9 July 2026

Sources

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.