Methyl 4-amino-2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate CAS:2902558-87-4 97% Methyl 4-amino-3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate CAS:3068381-44-9 97% | ||||||||||||