Carbonicanhydrase inhibitor 4 is a photoprobe that inhibits the activity of carbonicanhydrase. It specifically targets human carbonicanhydrases, including hCA I-XIV, with K i values ranging from 640-1166 nM [1].
Carbonicanhydrase inhibitor 14 (Compound 8b) is a potent CA inhibitor, exhibiting K i values of 1203, 99.7, 9.4, and 27.7 nM against hCA I, hCA II, hCA IX, and hCA XII, respectively. Additionally, it effectively inhibits CDK2 with an IC 50 of 20.3 μM. Furthermore, Carbonicanhydrase inhibitor 14 demonstrates significant antitumor activity [1].