Diplopterol is biosynthetic of squalene for use in acetobacter pasteurii in a cell-free system. It is a hopanoid and can be used as a substitute for sterols.
L-Azidonorleucine hydrochloride, an unnatural amino acid, serves as a surrogate for Methionine. It is utilized for labeling mammalian cell proteins and identifying a broad range of methionyl-tRNA synthetase (MetRS) mutants.