a-Tropolone, 2-hydroxy-2,4,6-cycloheptatriene-1-one, TROPOLONE FOR SYNTHESIS 1 G, Purpurocatechol, 2-Hydroxy-2,4,6-cycloheptatrien-1-one, 2-hydroxytropone, 2-hydroxycyclohepta-2,4,6-trienone, 2,4,6-Cycloheptatrien-1-one, 2-hydroxy-, 2-hydroxi-2,4,6-cycloheptatrien-1-one, TROPOLONE FOR SYNTHESIS 5 G