Synthesis of KSFA. a Esterification of free fatty acid in Khaya senegalensis oil with 2% H2SO4/MeOH. b Conversion of Khaya senegalensis oil to methyl esters using 1% KOH/MeOH. c Hydroxylation of Khaya senegalensis fatty acid methyl esters. d Synthesis of Khaya senegalensis fatty hydroxyamide