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How to cite this manuscript: Gundabathini Sandhya Rani, Adigopula Jyotsna, Bethala L.A. Prabhavathi Devi*. Benign synthesis of 5-substituted 1H-tetrazoles via [3+2] cycloaddition of nitriles and sodium azide employing SO3H-carbon as an efficient heterogeneous catalyst. Asian Journal of Green Chemistry, 3(2) 2019, 125-136. DOI: 10.22034/ajgc.2018.138421.1080