CAS 849674-11-9 appears in our catalog under these names: (3R,4S)-tert-Butyl 3-(bis(4-methoxyphenyl)(phenyl)methoxy)-4-((methylsulfonyl)oxy)pyrrolidine-1-carboxylate, 98+%, TERT-BUTYL 3-HYDROXY-4-PHENYLPYRROLIDINE-1-CARBOXYLATE (RACEMIC), 95%, rel-1,1-Dimethylethyl (3R,4S)-3-hydroxy-4-phenyl-1-pyrrolidinecarboxylate, 95%. Offered by: AmBeed, Fluorochem, Chemat. Available pack sizes: 1g.