L-METHIONINE-N-FMOC (METHYL-13C) is a protected amino acid derivative in which L-methionine is equipped with an N-Fmoc (9-fluorenylmethoxycarbonyl) carbamate on the amino group and bears a methyl-13C isotopic label on the side-chain thioether. The molecule contains a free carboxyl functional group and a thioether side chain characteristic of methionine, while the N-Fmoc group masks the α-amino functionality to control chemoselectivity during peptide assembly. As a labeled, protected building block, it is used in solid-phase or solution-phase peptide synthesis and in isotopic labeling workflows for analytical method development, structure-property studies, and mass spectrometry-based tracking of methionine-containing segments.
CAT No: L-Iso-0452
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