CAS 2231665-66-8 appears in our catalog under these names: Fmoc-L-beta,beta-diMe-Aze-OH, Fmoc-(S)-3,3-dimethylazetidine-2-carboxylic acid 98%, (2S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-3,3-dimethylazetidine-2-carboxylic acid, 98%, 98%, (2S)-1-(9H-FLUOREN-9-YLMETHOXYCARBONYL)-3,3-DIMETHYL-AZETIDINE-2-CARBOXYLIC ACID, 98%. Offered by: Iris Biotech, Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 100mg, 5g.