Semax, also known as Met-Glu-His-Phe-Pro-Gly-Pro, is a synthetic heptapeptide derived from the ACTH(4-10) fragment and studied for its relevance to neuropeptide signaling, ACTH-fragment research, neurotrophic-factor pathway models, BDNF-associated signaling environments, stress-associated biochemical models, and cognition-related pathway research.