Methylated Trivalent Arsenic-Glutathione Complexes are More Stable than their Arsenite Analog

Figure 1

Solution species at pH 7.4 of (a) arsenite, As(III), (b) monomethylarsonous acid, MMA(III), (c) dimethylarsinous acid, DMA(III), (d) arsenobetaine, AsB, (e) glutathione, GSH, and (f) sodium 2,3-dimercapto-1-propanesulfonate, DMPS [18, 19].

(a)

(b)

(c)

(d)

(e)

(f)