1 1JO D-gamma-glutamyl-S-(4-phenylbutyl)-L-cysteinylglycine 1.000 2 1JP D-gamma-glutamyl-(z)-N-(carboxymethylidene)-S-[(2r)-2-hydroxy-4-phenylbutyl]-L-cysteinamide 0.968 3 GTX S-hexylglutathione 0.750 4 LEE L-gamma-glutamyl-S-hexyl-L-cysteinylglycine 0.750 5 99T L-gamma-glutamyl-S-(2-carboxyethyl)-L-cysteinylglycine 0.719 6 GTY L-gamma-glutamyl-S-octyl-D-cysteinylglycine 0.706 7 GSM L-gamma-glutamyl-S-methylcysteinylglycine 0.700