4-Carboxy-3-chlorophenylboronic acid (CAS NO.136496-72-5), its Synonyms are 4-Carboxy-3-chlorobenzeneboronic acid 98% ; 5-Carboxy-3-chlorophenyl boronic acid ; 2-Chloro-4-(dihydroxyboryl)benzoic acid ; Benzoic acid, 4-borono-2-chloro- .