List of Articles sulfonic acid Open Access Article Abstract Page Full-Text 1 - Nanoalumina sulfonic acid catalyzed rapid N-formylation under solvent-free conditions Elham Tahanpesar Vajihe Rohani Nejad Open Access Article Abstract Page Full-Text 2 - β-Cyclodextrain sulfonic acid as a biodegradable solid catalyst in benzoxanthenes synthesis Mina Cheraghchi Ali.R Kiasat Rashid Badri Open Access Article Abstract Page Full-Text 3 - Synthesis of 1-amidoalkyl-2-naphthol derivatives using Supported sulfonic acid on silica coated cobalt ferrite nanoparticles as a catalyst under solvent free conditions Mozhgan Afshari Maryam Gorjizadeh 20.1001.1.27834107.2022.12.1.4.0