@article{andrade_1998,  title={Absolute Configurations and Enantiomeric Compositions of 2-Methyl-1-butanol and 2-Methyl-1-pentanol by ¹H-NMR Spectrometry of their Diastereomeric Valine Esters},  volume={9},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50531998000100015},  DOI={10.1590/S0103-50531998000100015},  number={1},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Andrade, Francisco A.C.},  year={1998},  month={Jan},  pages={85–89} }