Montazeri N. Sulfuric Acid Impregnated on Silica Gel (H2SO4/SiO2): A Versatile and Reusable Catalyst for the Synthesis of 1,2,4-Triazolo[5,1-b][1,3]thiazin-7-ones. ajc [Internet]. 2010 Jul. 10 [cited 2024 Nov. 25];22(9):7432-4. Available from: https://asianpubs.org/index.php/ajchem/article/view/12001