List of Articles Hadis Afshar-Hezarkhani Article 1 - 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 Ahmad Reza Moosavi-Zare Hadis Afshar-Hezarkhani Iranian Journal of Catalysis , Issue 2 , Year , Spring 2020