methyl 2-(1-hydroxy-3-methyl-4-oxonaphthalen-1-yl)acetate

methyl 2-(1-hydroxy-2-methyl-4-oxonaphthalen-1-yl)acetate

3-diazo-2,3-dihydro-2-methyl-2-(4-nitroanilino)-1,4-naphthoquinone

2-methyl-3-phenacylnaphthalene-1,4-dione

2-methyl-3-[2-(4-nitrophenyl)-2-oxoethyl]naphthalene-1,4-dione