2H-Naphtho(1,2-b)pyran-5,6-dione, 3,4-dihydro-2,2-dimethyl-3-(2-propenyl)- 3,4-Dihydro-2,2-dimethyl-3-(2-propenyl)-2H-naphtho(1,2-b)pyran-5,6-dione 3-Allyl-beta-lapachone 69655-91-0