SEARCH Articles Figures Tables 1 : 4-Naphthoquinone 1,4-Naphthoquinone 3,5-dimethoxy-2-methyl 1,4-Naphthoquinone 3-methoxy-2-methyl 2-Methyl-l,4-naphthoquinone 2-Methyl-l,4-naphthoquinone, menadione 3.5- Dihydroxy-2-methyl-1,4-naphthoquinone Hydroxy-methyl-naphthoquinone Methyl naphthoquinones Quinones 2-methyl-1,4-naphthoquinone