Mofarotene (Ro-40-8757) is a small molecule compound that shows considerable antitumor activity in many cancer cell lines and can be used for the treatment of tumors and respiratory diseases.Mofarotene is a retinoic acid analog that binds to and activates retinoic acid receptors (RARs), which alters the expression of certain genes, leading to reduced cell differentiation and cell proliferation in susceptible cells.