1,8-Dihydroxy-2-(1'-hydroxy-2'-carbamoyl)ethyl-9,10-anthraquinone 3-acetic acid lactone 12794-19-3 1H-Anthra(2,3-c)pyran-1-acetamide, 3,4,6,11-tetrahydro-10,12-dihydroxy-3,6,11-trioxo-, (+)- Ekatetrone NSC 319478