Kandpal BM, Tyagi R, Tehlan S, Singh S, Gupta R, Monga Y, et al. 4-Amino-3-hydrazino-5-mercapto-1,2,4,-triazole (PURPALD) in organic chemicals analysis: Distinguishing aldehydes and ketones. J Integr Sci Technol [Internet]. 2023 Aug. 20 [cited 2024 May 19];12(1):709. Available from: https://pubs.thesciencein.org/journal/index.php/jist/article/view/a709