@article{valente_bizarri_liechocki_barboza_paixão_almeida_benevides_magalhães_siani_2009,  title={Kaempferitrin from Uncaria guianensis (Rubiaceae) and its potential as a chemical marker for the species},  volume={20},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532009000600007},  DOI={10.1590/S0103-50532009000600007},  number={6},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Valente, Ligia M. M. and Bizarri, Carlos H. B. and Liechocki, Sally and Barboza, Rodolfo S. and Paixão, Djavan da and Almeida, M. Beatriz S. and Benevides, Paulo J. C. and Magalhães, Alvicler and Siani, Antonio C.},  year={2009},  pages={1041–1045} }