Development and Validation of an Analytical Method Using High Performance Liquid Chromatography (HPLC) to Determine Ethyl Butylacetylaminopropionate in Topical Repellent Formulations. Braz. J. Pharm. Sci. 2017, 53 (2), e16033-. https://doi.org/10.1590/s2175-97902017000216033.