Carbonyl 3-chlorophenylhydrazone

Formula : C7-H7-Cl-N2
CAS : 14046-96-9 

Inhibitor of ATP synthesis; inhibits iron-containing nitrile hydratases.

Carbonyl cyanide p-trifluoromethoxyphenylhydrazone

Formula : C10-H5-F3-N4-O
CAS : 370-86-5 

A proton ionophore that is commonly used as an uncoupling agent in biochemical studies.