Pralmorelin CAS 158861-67-7 

Pralmorelin is an orally-active, synthetic peptide drug, specifically, an analogue of 

met-enkephalin, with the amino acid sequence D-Ala-D-(β-naphthyl)-Ala-Ala-Trp-

D-Phe-Lys-NH2.Pralmorelin was also under investigation for the treatment of GHD and short stature 

(pituitary dwarfism), and made it to phase II clinical trials for these indications, but

was ultimately never marketed for them. This may be because the ability of pralmorelin

to increase plasma GH levels is significantly lower in people with GHD relative to healthy individuals.