@article{moura-silva_mano-sousa_santos_costa_andrade_duarte-almeida_gonçalves_2023,  title={Development and validation of an analytical method by HPLC-DAD for determination of caffeine in products based on guarana extracts (<i>Paullinia cupana)</i>},  volume={59},  ISSN={1984-8250},  url={https://doi.org/10.1590/s2175-97902023e22106},  DOI={10.1590/s2175-97902023e22106},  journal={Brazilian Journal of Pharmaceutical Sciences},  publisher={Universidade de São Paulo, Faculdade de Ciências Farmacêuticas},  author={Moura-Silva, Anna Kelly and Mano-Sousa, Brayan Jonas and Santos, Lays Pedrosa and Costa, Rafael Serrão da and Andrade, Frank Pereira de and Duarte-Almeida, Joaquim Maurício and Gonçalves, Daniel Bonoto},  year={2023},  pages={e22106} }