We offer 4-phosphonophenylalanine derivatives suitable for Fmoc- and Boc-SPPS:
Fmoc-4-phosphono-Phe(Bzl)-OH
Boc-4-phosphono-Phe(Et)2-OH
O-malonyltyrosine derivative Fmoc-Tyr(malonyl-di-OtBu)-OH.