ABD EL-RAZEK, M.H. NMR Assignments of Four Catechin Epimers. Asian Journal of Chemistry, [S. l.], v. 19, n. 6, p. 4867–4872, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/20032. Acesso em: 16 apr. 2025.