3,4-dioxo-3,4-dihydro-[2]naphthoic acid methyl ester;
3,4-dioxo-hexanedicarboxylic acid diethyl ester;
3,4-Dioxo-adipinsaeure-diaethylester;
3,4-Diketo-adipinsaeure;
3-carbomethoxy-1,2-naphthoquinone;
3,4-dioxo-adipic acid;
Ketipinsaeure;
3,4-dioxo-adipic acid diethyl ester;
2-Naphthalenecarboxylic acid,3,4-dihydro-3,4-dioxo-,methyl ester;
3,4-Dioxo-3,4-dihydro-[2]naphthoesaeure-methylester;
Ketipinsaeure-diaethylester;
3,4-Dioxo-adipinsaeure;
Naphthochinon-(1.2)-carbonsaeure-(3)-methylester;
3-Methoxycarbonyl-1,2-naphthochinon;