4,4-Dimethyl- and 4-monomethylsterols in seeds of Setaria italica and Echinochloa frumentacea were analyzed by GC-MS. Two 4,4-dimethylsterols and five 4-monomethylsterols were shown present in S. italica seeds, and three 4,4-dimethylsterols and eleven 4-monomethylsterols were found in E. frumentacea seeds.
