4-Methylcatechol is an organic compound with the formula CH3C6H3(OH)2 A white solid, it is one of the isomers of methylbenzenediol.

The enzyme cis-1,2-dihydroxy-4-methylcyclohexa-3,5-diene-1-carboxylate dehydrogenase uses cis-1,2-dihydroxy-4-methylcyclohexa-3,5-diene-1-carboxylate and NAD(P)+ to produce 4-methylcatechol, NADH, NADPH and CO2.

[2] The brand of low-temperature coke used as a smokeless fuel Coalite obtains homocatechol from ammoniacal liquor by solvent extraction, distillation and crystallisation.

[citation needed] Being structurally related to lignans, it is contributes to the aerosol generate by combustion of wood.

[4] It is a component of castoreum, the exudate from the castor sacs of the mature beaver.