Description

Guanyl-Cys-Oh is a specialized amino acid derivative featuring a guanidino group and a free carboxylic acid, making it a valuable building block in peptide synthesis. This compound is essential for researchers and manufacturers developing novel peptides for pharmaceutical and biochemical applications. It is particularly relevant for the synthesis of peptide analogs and bioactive molecules targeting specific enzymatic or receptor interactions.

Application

• Solid-Phase Peptide Synthesis (SPPS): A key protected or modified amino acid building block for the controlled assembly of complex peptide sequences.
• Pharmaceutical Research: Used in the development of peptide-based drug candidates, enzyme inhibitors, and receptor agonists/antagonists.
• Bioconjugation: Serves as a linker or functional handle for attaching peptides to other molecules, surfaces, or carriers.
• Biochemical Tool Development: Employed in creating substrates, probes, or standards for studying protease activity and peptide metabolism.
• Cosmeceutical Peptides: A potential ingredient in the synthesis of bioactive peptides for advanced skincare formulations.

Basic Information

Product Name	Guanyl-Cys-Oh
CAS No.	40454-21-5
Molecular Formula	C5H10N4O2S
Molecular Weight	190.22 g/mol
Synonyms	N-Guanyl-L-cysteine; L-Cysteine, N-guanyl-; N-(Diaminomethylidene)-L-cysteine; H-Arg(Cys)-OH (common abbreviation); S-2-Amino-3-[(diaminomethylene)amino]-3-oxopropanoic acid; Guanylcysteine; Amino acid derivative 40454-21-5
EINECS	Contact for details

Quality Control

Our Guanyl-Cys-Oh is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, chiral analysis, and identity confirmation (IR, NMR) to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) with detailed chromatographic data are provided to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This product is hygroscopic (moisture-sensitive); keep the container tightly sealed in a desiccated environment to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation	Specific range available on COA
Water Content (KF)	≤ 1.0%
Heavy Metals	< 10 ppm
Residue on Ignition	< 0.1%
Single Impurity (HPLC)	≤ 0.5%

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