5-L-谷氨酰-L-半胱氨酸

methylglutathione

L-gamma-谷氨酰-L-半胱氨酰-L-gamma-谷氨酰-L-半胱氨酰-L-gamma-谷氨酰-L-半胱氨酰甘氨酸

H-γ-L-Glu-L-Cys-γ-L-Glu-L-Cys-Gly-OH (cadystin B (2))

(γ-Glu-Cys)2