Sigma-Aldrich
CARBOBENZYLOXY-L-TYROSYL-L-TYROSINE
Copper
CARBOBENZYLOXYPHENYLALANYLNORLEUCINAMIDE
CARBOBENZYLOXYSARCOSYL-L-ALANINAMIDE
CARBOBENZYLOXYSARCOSYLPHENYLALANINE METHYL ESTER
CARBOBENZYLOXYTRYPTOPHYLALANINE METHYL ESTER