H-Phe-Tyr-OH

RGHRH (1-29)NH2 is a synthetic peptide that stimulates the secretion of growth hormone (GH).

Cyclo(Pro-Gly) is an active metabolite of piracetam-N-phenylacetyl-L-prolylglycine (GWS-111), it shows a greater resistance to an enzymatic effect than natural neuropeptides. Cyclo-(Gly-Pro) shows cytotoxicity at the concentration of 10 umol/L, it inhibits the growth of Bacillus subtilis with the minimal inhibitory concentration (MIC) value of 0.8, 0.8 g/L.