L-PHENYLALANINE-N-FMOC (RING-D5) is a protected, isotopically labeled amino acid derivative in which L-phenylalanine is equipped with an N-(9H-fluoren-9-ylmethoxycarbonyl) (Fmoc) protecting group on the amino functionality and bears five deuterium atoms (D5) on the aromatic ring. The molecule contains a free carboxylic acid group and an Fmoc-carbamate-protected α-amino group, with the benzyl side chain presenting an aromatic phenyl ring that is deuterium-labeled for mass-dependent tracking while maintaining the stereochemical identity indicated by the "L" designation. It is used as a building block for stepwise peptide synthesis and as an isotopically labeled phenylalanine analogue for analytical method development, mass spectrometric studies, and chemical biology experiments requiring defined incorporation of a deuterated aromatic side chain.
CAT No: L-Iso-0510
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