HCA I-IN-2

HCA I-IN-2 (Compound 6d) is a selective inhibitor of human carbonic anhydrase I (hCA I) with inhibition constants (Ki) as follows: 18.8 nM for hCA I, 375.1 nM for hCA II, 1721 nM for hCAIX, and 283.9 nM for hCAXII.