(8,8'-BI-1H-NAPHTHO(2,3-c)PYRAN)-1,1',6,9-TETRONE, 3,3',4,4'-TETRAHYDRO-7,7'-DIM (8,8'-Bi-1H-naphtho(2,3-c)pyran)-1,1',6,9-tetrone, 3,3',4,4'-tetrahydro-7,7'-dimethoxy-3,3'-dimethyl-9',10,10'-trihydroxy-, (R-(R*,R*))- 5-19-07-00211 (Beilstein Handbook Reference) 55625-78-0 8-(3,4-Dihydro-9,10-dihydroxy-7-methoxy-3-methyl-1-oxo-1H-naphtho(2,3-c)pyran-8-yl)-3,4-dihydro-6- hydroxy-9-methoxy-3-methyl-1H-naphtho(1,2-c)pyran-1,7,10-trione BRN 4630536 Viomellein