3,5-Difluorophenylboronic acid3,5-Difluorobenzeneboronic acid 98%3,5-二氟苯硼酸3,5-Difluorophenylboronic acid(3,5-Difluorophenyl)dihydroxyborane3,5-Difluorobenzeneboronic acid3,5-Difluorophenylboronic acid3,5-Difluorobenzeneboronic acid(3,5-difluorophenyl)boronic acid