2H-Naphtho(1,2-b)pyran-5,6-dione, 3,4-dihydro-2,2-dimethyl- 3,4-Dihydro-2,2-dimethyl-2H-naphtho(1,2-b)pyran-5,6-dione 4707-32-8 5-17-11-00459 (Beilstein Handbook Reference) BRN 0181499 LAPACHONE, BETA NSC 26326 NSC 629749 beta-Lapachone