110697-46-6 Arg-gly-asp-phe Arginyl-glycyl-aspartyl-phenylalanine L-Phenylalanine, N-(N-(N-L-arginylglycyl)-L-alpha-aspartyl)- N-(N-(N-L-Arginylglycyl)-L-alpha-aspartyl)-L-phenylalanine Rgdf peptide