Guaiol yields a deep purple color when treated with electrophilic bromine reagents.
2.
Oil of guaiac is primarily composed of 42-72 % guaiol, bulnesol, ?-bulnesene, ?-bulnesene, ?-guaiene, guaioxide and ?-patchoulene.
3.
Another paper in the series on chemotaxonomic variation in the terpenoid content of the essential oil of " Cannabis " revealed that several wide-leaflet drug strains in the collection had relatively high levels of certain sesquiterpene alcohols, including guaiol and isomers of eudesmol, that set them apart from the other putative taxa.