Comprehensive NMR Spectral Analysis and Prediction of Selected Coumarin Derivatives Using 1H, 13C, 2D-COSY, HSQC, and HMBC Techniques. Asian Journal of Medical Research and Health Sciences, [S. l.], v. 3, n. 2, 2025. Disponível em: https://ajmrhs.org/index.php/journal/article/view/10. Acesso em: 14 sep. 2025.