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A monograph on the physiological properties of vanilla extract (tincture) has been published by the Research Institute for Fragrance Materials (RIFM).
== Composition ==
'''Vanilla extract''' (Source: Klimes & Lamparsky, 1976.)
<div style="column-count:3;-moz-column-count:3;-webkit-column-count:3">
* 85.0% vanillin
* 8.5% 4-hydroxybenzaldehyde
* 1.0% 4-hydroxybenzyl methyl ether
* 0.5% acids and esters
* 0.5% acetic acid
* 0.5% phenols (alkyl) (unknown structures)
* 0.5% esters (unknown structure)
* 0.5% alkanes & alkenes
* 0.5% alkylbenzenes
* 0.1% sesquiterpene hydrocarbons
* 97.6% total
</div>
==Adulterations and substitutes==
