Moosavi-Zare, Ahmad Reza, and Hadis Afshar-Hezarkhani. 2024. “N-Sulfonic Acid Pyridinium-4-Carboxylic Acid Chloride As a Novel and Efficient Catalyst for the Condensation Reaction of Aldehyde With Thiobarbituric Acid and Ammonium Acetate”. Iranian Journal of Catalysis 10 (2). http://oiccpress.com/ijc/article/view/3551.