Seema Srivastava, Ghazala Roohi Fatima, Shweta Srivastava, Afroj Ahmed Kha, Anjali Awasthi2025-12-112025978-93-6884-138-8http://136.232.12.194:4000/handle/123456789/1594Advances In Contemporary Physics High-Energy, Cosmology, and Soft Matter Dr. Syed Salman Ahmad WarsiAn essential opioid peptide, endomorphine-2 has a broad range of uses in neurotransmitter release, hormone production, pain perception, and respiratory activity. Wilson and Urey Bradley force field conducted a thorough vibrational analysis utilizing the GF matrix method to comprehend the dynamical behavior of this opioid peptide. The potential energy distribution of different amide modes has been analyzed.en-USNATURAL SCIENCES::PhysicsBook chapter