(S)-N-(2-(Mercaptomethyl)-4-methyl-1-oxopentyl)-L-phenylalanyl-L-alaninamide 120020-30-6 HS-Leu-phe-ala-NH2 HS-Leucyl-phenylalanyl-alaninamide L-Alaninamide, N-(2-(mercaptomethyl)-4-methyl-1-oxopentyl)-L-phenylalanyl-, (S)-