pyrithione [ 2-HPT cpd,1-hydroxypyridine-2-thione,2-mercaptopyridine N-oxide,2-pyridinethiol 1-oxide,67Ga-MPO,68Ga-mercaptopyridine-N-oxide,N-hydroxypyridine-2-thione,Omadine,indium 111-2-mercaptopyridine-1-oxide,pyridine-2-thiol N-oxide,pyrithione barium (2:1) salt,pyrithione calcium (2:1) salt,pyrithione magnesium salt,pyrithione potassium salt,pyrithione sodium salt,sodium pyridinethione ] split from cephalosporin molecule; some metal complexes of this have fumarate reductase inhibitory activity and may be useful against trypanosomes; RN given refers to parent cpd; structure