The isolation of L(+)-methionine sulphoxide from the blowfly Phormia regina Meigen.
1. l(+)-Methionine sulphoxide has been isolated for the first time from a natural source, the blowfly Phormia regina. 2. The natural compound is shown to be identical with the synthetic by a number of criteria, including optical rotatory dispersion and infrared spectrum. 3. The methionine sulphoxide occurs in only a small concentration in the late larval and early pupal stages of the blowfly, but the titre increases rapidly in the later pupal stage and remains at a high level during the adult stage.
D001322:Autoanalysis; D002852:Chromatography, Ion Exchange; D004175:Diptera / Q000032:analysis*; D006851:Hydrochloric Acid / Q000494:pharmacology; D008715:Methionine / Q000032:analysis*; D055095:Optics and Photonics; D013057:Spectrum Analysis
D008715:Methionine; D006851:Hydrochloric Acid