71142-71-7 D-Phe-pro-arg CH2Cl D-Phenylalanine-proline-arginine methyl chloride L-Prolinamide, D-phenylalanyl-N-(4-((aminoiminomethyl)amino)-1-(chloroacetyl)butyl)-, (S)- PPACK Phe-pro-arg-methyl chloride Phenylalanyl-prolyl-arginine methyl chloride