Description

L-Cysteinyl-L-cysteinyl-L-α-glutamyl-L-tyrosyl-L-cysteinyl-L-cysteinyl-L-asparaginyl-L-prolyl-L-alanyl-L-cysteinyl-L-threonylglycyl-L-cysteinyl-L-Tyrosine Trifluoroacetate is a synthetic peptide of significant interest in advanced biochemical research and pharmaceutical development. Its complex, cysteine-rich structure makes it a valuable tool for studying protein folding, disulfide bond formation, and redox biology. This high-purity compound is essential for researchers and developers in the fields of peptide therapeutics, bioconjugation, and molecular biology who require reliable, well-characterized building blocks.

Application

• Pharmaceutical Research & Development: As a key intermediate or reference standard in the discovery and development of novel peptide-based drugs and biologics.
• Biochemical Research: Used as a substrate or model compound in enzymatic studies, protein-protein interaction assays, and investigations into cellular redox signaling pathways.
• Conjugation Chemistry: The multiple cysteine residues provide reactive thiol groups for site-specific bioconjugation, enabling the creation of antibody-drug conjugates (ADCs), peptide-drug conjugates, or fluorescently labeled probes.
• Material Science: Potential use in the development of biomimetic materials and self-assembling peptide nanostructures due to its specific sequence and folding properties.
• Diagnostic Reagent Development: Serves as a critical component in the formulation of sensitive and specific diagnostic assays and biosensors.

Basic Information

Product Name	L-Cysteinyl-L-cysteinyl-L-α-glutamyl-L-tyrosyl-L-cysteinyl-L-cysteinyl-L-asparaginyl-L-prolyl-L-alanyl-L-cysteinyl-L-threonylglycyl-L-cysteinyl-L-Tyrosine Trifluoroacetate
CAS No.	1638632-09-3
Molecular Formula	C68H100N18O25S6 • xC2HF3O2
Molecular Weight	~1849.9 g/mol (Free base)
Synonyms	Cys-Cys-Glu-Tyr-Cys-Cys-Asn-Pro-Ala-Cys-Thr-Gly-Cys-Tyr TFA Salt; CCEYCCNPACTGCY TFA; H-Cys-Cys-Glu-Tyr-Cys-Cys-Asn-Pro-Ala-Cys-Thr-Gly-Cys-Tyr-OH (Trifluoroacetate salt); Cysteine-rich Peptide TFA Salt (Sequence: CCECCNPACTGCY); Tetra-decapeptide CCECCNPACTGCY TFA; Peptide with CAS 1638632-09-3
EINECS	Contact for details

Quality Control

Our L-Cysteinyl-L-cysteinyl-L-α-glutamyl-L-tyrosyl-L-cysteinyl-L-cysteinyl-L-asparaginyl-L-prolyl-L-alanyl-L-cysteinyl-L-threonylglycyl-L-cysteinyl-L-Tyrosine Trifluoroacetate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity verification, to ensure it meets the high standards required for research and development. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting critical specifications such as assay purity, peptide content, and residual solvents.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below in a freezer. This product is hygroscopic (moisture-sensitive). Allow the sealed vial to equilibrate to room temperature before opening to minimize moisture absorption. For long-term storage, keep desiccated.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Purity (HPLC)	≥ 95.0%
Peptide Content	≥ 70.0% (by weight)
Single Impurity (HPLC)	≤ 1.0%
Water Content (KF)	≤ 8.0%
Acetate Content (HPLC)	≤ 15.0%

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