L-LEUCINE-N-FMOC (5,5,5-D3) is an Fmoc-protected amino acid derivative in which L-leucine is modified at the amino group with a 9-fluorenylmethoxycarbonyl (Fmoc) protecting group and the leucine side-chain bears three deuterium atoms at the 5-position (5,5,5-D3). The molecule contains a free carboxylic acid functional group and an Fmoc-carbamate nitrogen, with the deuterium labeling retained on the isobutyl side chain to enable isotopic distinction while maintaining the leucine backbone stereochemistry indicated by the "L" designation. In peptide chemistry, the Fmoc-protected, carboxylic-acid-bearing form is used as a protected amino acid building block for stepwise assembly and as an isotopically labeled residue for analytical method development, mass spectrometric tracing, and structure-activity studies.
CAT No: L-Iso-0381
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