Exploring circumstellar chemistry in X-ray emitting AGB starsJ. Alonso-Hernández, C. Sánchez Contreras, M. Agúndez, R. Sahai, J. P. Fonfría, L. Velilla-Prieto, G. Quintana-Lacaci and J. CernicharoA&A, 698 (2025) A319DOI: https://doi.org/10.1051/0004-6361/202553819