1259-86-5 Butyric acid, 2-hydroxy-2-methyl-, 4-ester with 1,3abeta,4,7,7aalpha,11,11a,11balpha-octahydro-1alpha,2alpha,4beta,11beta-tetrahydroxy-3alpha,8,11abeta-trimethyl-2H-1,11cbeta-(epoxymethano)phenanthro(10,1-bc)pyran-5,10(3H,6abetaH)-dione (8CI) Glaucarubinone NSC 132791 NSC 277286 Picras-3-ene-2,16-dione, 11,20-epoxy-1,11,12-trihydroxy-15-(2-hydroxy-2-methyl-1-oxobutoxy)-, (1beta,11beta,12alpha,15beta(S))- (9CI)