16230-71-0 2,2-Diphenyl-3-hydroxypropionic acid lactone 2-Oxetanone, 3,3-diphenyl- 3,3-Diphenyl-2-oxetanone 5-17-10-00475 (Beilstein Handbook Reference) BRN 0175425 NSC 21331 alpha,alpha-Diphenyl-beta-propiolactone