“…Compound I gave an anodic wave due to its sulfhydryl group in buffers a t various pH values. The electrode reaction of a sulfhydryl group involves oxidation of mercury in the presence of the sulfhydryl into mercury mercaptide (13,14). Compound I was studied using three modes of po- Polarograms a-d were recorded in the differential pulse mode, e was recorded in the pulse mode, and f was recorded in the dc mode.…”