81733-82-6 L-Phenylalaninamide, L-tyrosyl-D-alanylglycyl-4-nitro- L-Tyrosyl-D-alanylglycyl-4-nitro-L-phenylalaninamide Tag-NP Tyr-ala-gly-phe(No2)-NH2 Tyrosyl-alanyl-glycyl-nitrophenylalanylamide