72122-62-4 L-Isoleucine, N-(1-(N-(1-(N-(1-L-tyrosyl-L-prolyl)-L-phenylalanyl)-L-prolyl)glycyl)-L-prolyl)- Tyr-pro-phe-pro-gly-pro-ile Tyrosyl-prolyl-phenylalanyl-prolylglycyl-prolyl-isoleucine beta-casomorphin 7