CAS 53159-75-4 appears in our catalog under these names: 1-(4-Fluorophenyl)imidazolidin-2-one, 98%, 1-(4-Fluorophenyl)imidazolidin-2-one, 98%, 98%, 1-(4-Fluorophenyl)tetrahydro-2H-imidazol-2-one, 98%. Offered by: AmBeed, Fluorochem, Chemat, Combi-blocks. Available pack sizes: 10g, 25g, 250mg, 1g, 100mg, 5g.