1,2-Dihydro-1,2-diketo-naphthalene 1,2-NAPHTHOQUINONE 1,2-Naftochinon [Czech] 1,2-Naphthalenedione 1,2-Naphthaquinone 4-07-00-02417 (Beilstein Handbook Reference) 524-42-5 AI3-14930 BRN 0606546 CCRIS 1558 EINECS 208-360-2 HSDB 2036 NSC 9831 beta-Naphthoquinone o-Naphthoquinone