2-Ethoxyphenylboronic acid (CAS NO.213211-69-9) is also named as Boronicacid, B-(2-ethoxyphenyl)- ; 2-(Ethoxy)benzeneboronic acid ; (2-Ethyloxyphenyl)boronic acid . 2-Ethoxyphenylboronic acid (CAS NO.213211-69-9) is white to off-white crystals or crystalline powder.