ULLAH KHAN, Ihsan et al. Asperal: A New Clerodane Diterpene from Sonchus asper. Asian Journal of Chemistry, [S. l.], v. 26, n. 9, p. 2699–2701, 2014. DOI: 10.14233/ajchem.2014.16008. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/26_10_44. Acesso em: 23 jul. 2024.