METHYLCYCLOPENTENOLONE BUTYRATE

Methyl cyclopentenolone butyrate has been used in flavor compositions, where a “Cyclotene” effect is desirable in combination with a buttery-creamy effect, particularly in imitation Butter, cream, Vanilla, and in Butterscotch, caramel, etc. It is not very stable, and any amount of free Butyric acid is likely to ruin the organoleptic picture of this material.

By esterification of Methyl cyclopentenolone with Butyric acid, preferably under azeotropic conditions.