CAS 151990-53-3 appears in our catalog under these names: 3-Methyl-3-phenylcyclobutan-1-one, 3-Methyl-3-phenylcyclobutan-1-one 98%, 3-Methyl-3-phenylcyclobutan-1-one, 98%, 3-Methyl-3-phenylcyclobutan-1-one, 98%, 98%. Offered by: Biosynth, Ambeed, Fluorochem, Chemat. Available pack sizes: 100mg, 1g, 250mg, 5g, 500mg, 2.5g, 10g.