Gomes, M. F.; Araújo, G. R.; Silva, Z. D. S.; de Sousa, R. M. F.; Dias, H. J. Identification and Infrared Spectroscopic Study of Lapachol, β-Lapachone and Hydroxy-Hydrolapachol. Arch Pharm Pharma Sci 2023, 7, 028-035.