Toki K, Saito N, Irie Y, Tatsuzawa F, Shigihara A, Honda T (marzo de 2008). «7-O-Methylated anthocyanidin glycosides from Catharanthus roseus». Phytochemistry69 (5): 1215-9. PMID18164044. doi:10.1016/j.phytochem.2007.11.005.
nih.gov
ncbi.nlm.nih.gov
Toki K, Saito N, Irie Y, Tatsuzawa F, Shigihara A, Honda T (marzo de 2008). «7-O-Methylated anthocyanidin glycosides from Catharanthus roseus». Phytochemistry69 (5): 1215-9. PMID18164044. doi:10.1016/j.phytochem.2007.11.005.