Vanillin: nf Vanillin is an abundant fragrant compound in vanilla pods. The vanillin crystallizes on them in the form of a whitish efflorescence. Industrially prepared from eugenol, an essence extracted from the clove tree, combined with acetic acid and potassium permanganate or other similar oxidants, it comes in colorless crystals. Toasting (burning) the interior of oak barrels reveals vanillin. Vanillin...
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