2-Methyl-1,4-naphthoquinoneradical anion; 2-Methyl-1,4-naphthoquinone radical ion(1-);2-Methyl-1,4-naphthosemiquinone; Menadione semiquinone radical ion(1-);Menaquinone radical anion(1-); Vitamin K3 radical anion; Vitamin K3 semiquinone
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