Luisier, Jean-Luc, et al. “Characterisation and Simple Synthesis of S-[3-Hydroxy-1-Propylpropyl]-L-Cysteine: FH - HES”. CHIMIA, vol. 61, no. 7-8, July 2007, p. 533, https://doi.org/10.2533/chimia.2007.533.