@article{chang_yu_2011,  title={Determination of etimicin in rat plasma using 9-fluorenylmethyl chloroformate precolumn derivatization by HPLC with fluorescence detection},  volume={22},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532011000700008},  DOI={10.1590/S0103-50532011000700008},  number={7},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Chang, Xiaojuan and Yu, Zhengping},  year={2011},  month={Jul},  pages={1246–1252} }