Substituted phenols or polyhydroxy phenols have their general name apart form IUPAC names. The general names comes from the source it is found like:-
- Catechol (1,2-dihydroxybenzene)- obtained from catechu
- Cresol (methylphenol) - obtained from creosote, a component of coal tar
- Gallol (1,2,3-Trihydroxybenzene) - synthesized from gallic acid which is obtained from oak galls, not a compound of gallium which many people get confused.
But what about resorcinol? Why is it named so? Is it resourceful? It is primarily obtained from argan oil. So, it should be named as arganol. But it is not so.
Same thing happens with phloroglucinol. Various sources are there but none of them matches with the general name.