Catsyn offer gram to tons of 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-YL)-spiro[9H-fluorene-9,9′-xanthene] | CAS 2225963-98-2, its formula is C31H27BO3, molecular weight is 458.36g/mol and the purity is usually NLT 98%.