@article{Mahsa202134 title = "The study of Chemical Structure (NMR and FTIR) of Chalcones Obtained from New Heterocyclic Synthesis Based on 5-Chloroisatin", journal = "Journal of New Developments in Chemistry", volume = "3", number = "2", pages = "34 - 49", year = "2021", note = "", issn = "2377-2549", doi = "https://doi.org/10.14302/issn.2377-2549.jndc-21-3723", url = "https://openaccesspub.orgjndc/article/1574", author = "Sanaei Mahsa and Shaabanzadeh Masoud", keywords = "cyclic compound", keywords = "heterocyclic", keywords = "compounds", keywords = "Pyrazolines", keywords = "Tryptanthrin." }