I 4117 (OTTO) Isobutaneboronic acid, ≥95% Cas 84110-40-7 - used as a reactant in the preparation of 4-isobutylisoquinoline from 4-bromoisoquinoline by Suzuki-Miyaura type couple reaction. I 4117 (OTTO) Isobutaneboronic acid, ≥95% Cas 84110-40-7 - used as a reactant in copper catalyzed cross-coupling reactions.