The chemical Niclosamide has a designated molecular formula of C13H8Cl2N2O4 and a molecular weight of 327.117 g/mol. Synonyms may include: B 2353, AI3-25823, Atenase, BAY 2353, Bayer 2353, Bayer 73, Bayluscid, Benzamide, 5-chloro-N-(2-chloro-4-nitrophenyl)-2-hydroxy-, BRN 2820605, CCRIS 3437, Cestocid (ChemID).