SYNTHESIS AND STUDY OF N,N1 - HEXAMETHYLENE BIS- {[(4,41-DIMETHYLDIPHENYL)-AZO-2,21-DIAMINO] UREA} PROPERTIES, APPLICATIONS. Journal of Pharmaceutical Negative Results 2022, 3265-2378. https://doi.org/10.47750/pnr.2022.13.S06.441.