1,3,6,8-Tetrahydroxynaphthalene (T4HN) is an indispensable precursor to DHN (1,8-Dihydroxynaphthalene) melanin and is an unique symmetrical compound of polyketide origin[1].
1,3,6,8-tetrahydroxynaphthalene (T4HN), an early precursor in the pentaketide pathway, is believed to be produced directly from malonyl-CoA and acetyl-CoA by type-1 polyketide synthases (PKSs)[2].
















