Sigma-Aldrich
CARBOBENZYLOXY-L-TRYPTOPHYL-L-PHENYLALANINAMIDE
CARBOBENZYLOXY-L-TYROSYL-L-LEUCINE METHYL ESTER
Copper
CARBOBENZYLOXYPROLYLALANINE METHYL ESTER
CARBOBENZYLOXYSARCOSYL-L-TRYPTOPHAN METHYL ESTER
CARBOBENZYLOXYTHREONYLTYROSINE BENZYL ESTER
CARBOBENZYLOXYTRYPTOPHYLTRYPTOPHAN METHYL ESTER