%0 Journal Article %T Novel Azo-fused Dipyrazolopyridine Derivatives using Waste Orange Peel-derived C-SO3H Nanopowder as an Efficient and Reusable Catalyst %A Nagarajan Nagasundaram %A Sivagiri Sumitha %A Appaswami Lalitha %D 2019 %R 10.13074/jent.2019.12.194383 %J Journal of Environmental Nanotechnology %P 17-20 %V 8 %N 4 %I Institute for Environmental Nanotechnology %U https://doi.org/10.13074/jent.2019.12.194383