Fmoc-7-methyl-L-tryptophan is an Fmoc-protected non-canonical amino acid with a methyl group at the 7-position of the indole ring, designed for Fmoc solid-phase peptide synthesis (SPPS). Hzymes makes it by tryptophan synthase biocatalysis followed by chemical Fmoc protection.

Fmoc-7-methyl-L-tryptophan combines an N-terminal 9-fluorenylmethoxycarbonyl (Fmoc) group with a 7-methyl-substituted indole side chain, so it can be dropped into standard Fmoc SPPS to introduce a non-canonical tryptophan residue. Hzymes uses a combined route: tryptophan synthase forms 7-methyl-L-tryptophan from 7-methylindole and L-serine, and the amino group is then protected chemically with Fmoc. It is part of Hzymes' Enlicitide (MK-0616) building-block series and is available as a high-purity Fmoc unnatural amino acid.

Product Overview

The 7-methyl group adds steric bulk and lipophilicity at the indole ring, a common modification in peptide structure-activity work. The Fmoc group is removed under mild base (typically piperidine in DMF), so the building block fits standard Fmoc SPPS cycles.

Hzymes provides high-purity Fmoc-protected unnatural amino acid building blocks for research and peptide synthesis applications.

Key Features

High Chemical and Optical Purity

Fmoc-7-methyl-L-tryptophan is produced using a stereoselective enzymatic route, minimizing the need for conventional chiral resolution. Optical purity reaches ≥99.9% ee, making the product suitable for applications requiring tight stereochemical control.

The high-purity profile also makes it suitable for researchers looking for 7-methyltryptophan 99% ee or higher-purity modified amino acid building blocks.

Fmoc Protection for Standard SPPS

The Fmoc group enables direct integration into standard Fmoc-SPPS workflows. This product can therefore serve as an Fmoc NCAA SPPS compatible building block for incorporating a non-canonical tryptophan residue into peptide sequences.

Fmoc can be selectively removed under mild basic conditions, such as 20% piperidine in DMF, while preserving the side-chain methyl modification.

Enzymatic and Biocatalytic Manufacturing

The synthesis route combines enzymatic amino acid construction with chemical Fmoc protection. The use of tryptophan synthase provides a stereoselective route from 7-methylindole and L-serine, supporting the preparation of high-purity 7-methyltryptophan.

This approach is particularly relevant to researchers investigating 7-methylindole tryptophan synthase systems and engineered TrpB platforms for non-canonical amino acid production.

Consistent Batch Quality

Each batch is evaluated for key quality attributes, including appearance, HPLC purity, optical purity, impurities, water content, and residual solvents. Batch-specific analytical results are documented in the CoA to support reproducibility and traceability.

Applications

Non-Canonical Amino Acid Peptide Synthesis

Fmoc-7-methyl-L-tryptophan can be incorporated into peptide sequences as a non-canonical amino acid using standard Fmoc-SPPS protocols. It provides an alternative to natural tryptophan for investigating how targeted methyl substitution influences peptide properties.

The product is suitable for tryptophan derivative peptide synthesis, particularly when researchers need to introduce a defined structural modification while maintaining compatibility with established solid-phase synthesis workflows.

Peptide Drug Discovery and SAR Studies

The 7-methyl modification changes the steric and electronic environment of the indole ring and can be used to systematically investigate the influence of methyl substitution on peptide structure and biological activity.

In medicinal chemistry programs, this building block can support the design of methylated tryptophan peptide drug candidates and analog libraries for evaluating target affinity, selectivity, metabolic stability, and proteolytic resistance.

Macrocyclic Peptide Development

The product can also be considered for macrocyclic peptide methyltryptophan research, where incorporation of non-natural residues can help explore changes in conformation, hydrophobic interactions, and target recognition.

Its compatibility with Fmoc-SPPS makes it suitable for library-based synthesis and iterative optimization of modified and macrocyclic peptide candidates.

Peptide Structure and Molecular Interaction Studies

7-Methyl-L-tryptophan provides a useful molecular modification for investigating protein–peptide and protein–ligand interactions. Incorporation into peptide sequences can help researchers assess the contribution of the tryptophan indole ring to binding, conformation, and molecular recognition.

FAQ

What is Fmoc-7-methyl-L-tryptophan?

It is an Fmoc-protected 7-methyltryptophan derivative used as a non-canonical amino acid building block for peptide synthesis.

Is Fmoc-7-methyl-L-tryptophan compatible with SPPS?

Yes. It is designed for Fmoc SPPS; the Fmoc group is removed with a base such as piperidine in each cycle.

Which solvents can dissolve it?

Fmoc-protected amino acids generally dissolve in polar aprotic solvents such as DMF and NMP. Confirm with the solubility data supplied with the COA.

How does Hzymes manufacture it?

Tryptophan synthase catalyzes the formation of 7-methyl-L-tryptophan from 7-methylindole and L-serine, followed by chemical Fmoc protection.

Is Hzymes an Fmoc unnatural amino acid supplier, and can it support GMP CDMO projects?

Hzymes provides high-purity Fmoc-protected unnatural amino acid building blocks for research and peptide synthesis. GMP CDMO services available upon company project approval; custom synthesis, scale-up and regulatory support subject to evaluation.