methyl 1,4-dihydroxy-3-methyl-2-naphthoate

(3-methyl-1,4-dioxonaphthalen-2-yl) acetate

2-(2-oxo-butyryl)-benzoic acid

2-methyl-3-(2-methylpropyl)-2,3-dihydro-2,3-epoxy-1,4-naphthoquinone

乙酸1,4-二氧代-1,4-二氢萘-2-基酯