Kandpal, Bhaskar Mohan, Richa Tyagi, Sarita Tehlan, Shivendra Singh, Radhika Gupta, Yukti Monga, and Ashu Gupta. 2023. “4-Amino-3-Hydrazino-5-Mercapto-1,2,4,-Triazole (PURPALD) in Organic Chemicals Analysis: Distinguishing Aldehydes and Ketones”. Journal of Integrated Science and Technology 12 (1): 709. https://pubs.thesciencein.org/journal/index.php/jist/article/view/a709.