Carbonic anhydrase is ubiquitous zinc-containing metalloenzyme present in prokaryotes and eukaryotes. Carbonic anhydrase can catalyze reversible conversion of carbon dioxide to bicarbonate and protons. Carbonic anhydrase can be used for the research of cancer , glaucoma, obesity and epilepsy [1] [2] .

CG347B is a selective inhibitor of HDAC6.

ts-SA is a metalloenzyme carbonic anhydrase (CA) inhibitor. It is active against 7 out of 10 human CA isoforms.

Tioxolone is a metalloenzyme carbonic anhydrase I inhibitor.

Galactose oxidase (GOase), a type II copper metalloenzyme derived from fungus, comprises a single polypeptide. It is commonly utilized in biochemical studies for catalyzing the two-electron oxidation of primary alcohols to aldehydes, simultaneously reducing dioxygen to hydrogen peroxide [1].

Tyrosinase-IN-3 (compound 54) is a powerful tyrosinase inhibitor, an enzyme involved in the key catalytic step of melanin biosynthesis and enzymatic browning. As a copper-containing metalloenzyme, tyrosinase plays a crucial role in these processes. The compound shows promise for studying skin whitening agents and food preservatives [1].

Tyrosinase-IN-2 (compound 67) is a potent inhibitor of tyrosinase, a copper-containing metalloenzyme pivotal for the catalytic step that limits the rate in melanin biosynthesis and enzymatic browning processes. This compound holds potential for research into skin whitening agents and food preservatives [1].