BOC-TYR-OET

BOC-PHE(4-OET)-OH

BOC-TYROSINE(ET)-OH

N-ALPHA-T-BOC-O-ETHYL-L-TYROSINE

N-(TERT-BUTOXYCARBONYL)-O-ETHYLTYROSINE

N-ALPHA-T-BUTOXYCARBONYL-O-ETHYL-L-TYROSINE