Woody or lignified cell-walls appear to contain substances called conifer-in and vanillin, in addition to various other compounds which are imperfectly known.
Vanillin does not give the Cannizzaro reaction, but with alcoholic potash forms vanillicacid,H000(1) ï¿½ C6H3.00H3 (3)ï¿½OH(4), and vanilloin.
For dioxybenzaldehydes and their derivatives see Piperonal and Vanillin.
On oxidation with potassium permanganate it gives homovanillin, vanillin, &c.; with chromic acid in acetic acid solution it is converted into carbon dioxide and acetic acid, whilst nitric acid oxidizes it to oxalic acid.
By the action of alkalis it is converted into iso-eugenol, which on oxidation yields vanillin, the odorous principle of vanilla.