CAS 236739-03-0 appears in our catalog under these names: 1,4-Difluoro-2-(methylsulfonyl)benzene, 98%, 1,4-Difluoro-2-(methylsulfonyl)benzene 98%, 1,4-Difluoro-2-(methylsulfonyl)-benzene. Offered by: Combi-blocks, AmBeed, Fluorochem. Available pack sizes: 250mg, 5g, 1g, 100mg.