CAS 20896-23-5 appears in our catalog under these names: Methyl 3,4-bis(bromomethyl)benzoate, 97%, Methyl 3,4-bis(bromomethyl)benzoate, 98%, Methyl 3,4-bis(bromomethyl)benzoate, 95%. Offered by: Combi-blocks, AmBeed, Fluorochem. Available pack sizes: 250mg, 1g, 10g, 100mg, 5g, 500mg, 2g.