Glutathione disulfide (GSSG) is the oxidised dimeric form of glutathione (GSH), which is a naturally occuring tripeptide that takes part in the bodies detoxification mechanisms and protects against oxidative damage.
G 1380 (OTTO) Glutathione oxidized, extra pure, 99% Cas 27025-41-8 - used to gauge the level of oxidative stress in cells, with higher concentrations of GSSG implying more oxidative stress