8.55
[1]. E Lempicka, et al. Analogs of arginine vasopressin modified in position with (R)-alpha-hydroxymethylphenylalanine. J Pept Res. 1999 May;5(5):55-9.
[2]. M H Kim, et al. Tetrapeptide tyrosine kinase inhibitors. Enantioselective synthesis of p-hydroxymethyl-L-phenylalanine, incorporation into a tetrapeptide, and subsequent elaboration into p-(R,S-hydroxyphosphonomethyl)-L-phenylalanine. Int J Pept Protein Res. 199 Nov;(5):57-65.
H02-H15-H19-H5
P261-P26-P270-P271-P280-P02+P52-P0+P0-P0-P62+P6-P05-P501