1448-23-3 Butyric acid, 2-hydroxy-2-methyl-, 4-ester with 1,2,3,3a-beta,4,6a-beta,7,7a-alpha,10,11,11a,11b-alpha-dodecahydro-1-alpha,2-alpha,4-beta,10-alpha,11-beta-pentahydroxy-3-alpha,8,11a-beta-trimethyl-5H-1,11c-beta-(epoxymethano)phenanthro(10,1-bc)pyran-5-one GLAUCARUBIN Glarubin Glaucarubina Glaumeba MK-53 NSC 14975 Picras-3-en-16-one, 11,20-epoxy-1,2,11,12-tetrahydroxy-15-(2-hydroxy-2-methyl-1-oxobutoxy)-, (1beta,2alpha,11beta,12alpha,15beta(S))- Simarubaceae alpha-Kirondrin