• CAS:432025-97-3

  5-Ethynylisophthalic acid

• CAS:881302-73-4

  1,​3-​Benzenedicarboxylic acid, 5-​borono-

• CAS:164073-80-7

  dimethyl 5-formylisophthalate

• CAS:177735-55-6

  (3,5-Bis(methoxycarbonyl)phenyl)boronic acid

• CAS:944392-68-1

  3,5-Bis(methoxycarbonyl)phenylboronic acid pinacol ester

• CAS:313648-56-5

  DiMethyl5-ethynylisophthalate