Description

L-Tryptophan, L-cysteinyl-L-alanyl-L-cysteinyl-L-phenylalanyl-L-threonyl-L-tyrosyl-L-lysyl-L-α-aspartyl-L-lysyl-L-α-glutamyl-L-cysteinyl-L-valyl-L-tyrosyl-L-tyrosyl-L-cysteinyl-L-histidyl-L-leucyl-L-α-aspartyl-L-isoleucyl-L-isoleucyl-, cyclic (1→15),(3→11)-bis(disulfide) is a complex, cyclic peptide featuring a unique bis(disulfide) bridge structure, offering high specificity and stability for advanced research and development. This compound is of significant interest for its potential role in modulating biological pathways and interactions due to its intricate amino acid sequence and constrained conformation. It is primarily utilized by researchers and developers in the pharmaceutical and biotechnology sectors for applications in drug discovery, peptide therapeutics, and biochemical studies.

Application

• Pharmaceutical Research & Drug Discovery: Serves as a key intermediate or active pharmaceutical ingredient (API) in the development of novel peptide-based therapeutics.
• Biochemical & Mechanistic Studies: Used as a tool compound to investigate protein-protein interactions, receptor binding, and specific enzymatic activities.
• Peptide Library Synthesis: Acts as a specialized building block for constructing focused libraries to screen for new biological activities.
• Academic & Contract Research: Employed in university and CRO laboratories for fundamental research in biochemistry, molecular biology, and medicinal chemistry.
• Diagnostic Development: Potential use in the design of diagnostic assays or imaging agents that target specific biological markers.

Basic Information

Product Name	L-Tryptophan, L-cysteinyl-L-alanyl-L-cysteinyl-L-phenylalanyl-L-threonyl-L-tyrosyl-L-lysyl-L-α-aspartyl-L-lysyl-L-α-glutamyl-L-cysteinyl-L-valyl-L-tyrosyl-L-tyrosyl-L-cysteinyl-L-histidyl-L-leucyl-L-α-aspartyl-L-isoleucyl-L-isoleucyl-, cyclic (1→15),(3→11)-bis(disulfide)
CAS No.	2243207-08-9
Molecular Formula	C134H188N32O36S4
Molecular Weight	Contact for details
Synonyms	Cyclic (1→15),(3→11)-bis(disulfide) peptide; Tryptophan-containing cyclic bis-disulfide peptide; [Cys1, Cys3, Cys11, Cys15] cyclic peptide; Research Peptide 2243207-08-9; Custom cyclic tetradecapeptide; L-TRP-CYS-ALA-CYS-PHE-THR-TYR-LYS-ASP-LYS-GLU-CYS-VAL-TYR-TYR-CYS-HIS-LEU-ASP-ILE-ILE cyclic (1-15,3-11) disulfide; Cyclic peptide with dual disulfide bonds
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. We provide high-purity research-grade material with comprehensive analytical characterization. Quality is verified using advanced techniques including HPLC, MS, and NMR to confirm identity, purity, and structural integrity. Certificates of Analysis (COA) detailing batch-specific results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below for long-term stability. This material is hygroscopic (moisture-sensitive); ensure the container is sealed under inert atmosphere or desiccant after each use to prevent degradation. Allow the sealed vial to equilibrate to room temperature before opening to minimize moisture condensation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC/MS)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Related Substances (HPLC)	Individual impurity ≤ 2.0%
Water Content (KF)	≤ 5.0%
Peptide Content	≥ 80.0%
Solubility	Soluble in DMSO, Acetonitrile/Water mixtures

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.