Overview
Dansyl-L-proline is a chemically modified derivative of L-proline, featuring a dansyl (5-dimethylaminonaphthalene-1-sulfonyl) group. This modification enhances its fluorescence properties, making it valuable in biochemical and pharmaceutical research. Primarily used as a derivatization agent, it aids in the detection and quantification of amino acids and peptides via high-performance liquid chromatography (HPLC) and fluorescence spectroscopy. Its chiral nature also supports studies in stereochemistry and enzyme mechanisms.
Physical and Chemical Properties
Dansyl-L-proline appears as a light yellow to yellow crystalline powder with a molecular weight of 348.42 g/mol. It exhibits a melting point range of 180-185°C and is soluble in polar organic solvents like dimethyl sulfoxide (DMSO) and methanol. The dansyl group imparts strong fluorescence under UV light, with excitation and emission maxima typically around 340 nm and 520 nm, respectively. This property is critical for its use in sensitive detection methods. The compound is stable under inert conditions but may degrade upon prolonged exposure to light or moisture.
Main Applications
In biochemical research, Dansyl-L-proline serves as a fluorescent probe to study protein-protein interactions, enzyme kinetics, and peptide synthesis. Its high sensitivity allows for trace-level detection in complex matrices. The pharmaceutical industry employs it for quality control of amino acid-based drugs and in chiral separation techniques. Additionally, it is used in academic settings to teach advanced analytical chemistry concepts due to its predictable fluorescence behavior.
Safety and Storage
Handle Dansyl-L-proline with care, using gloves, goggles, and a lab coat to prevent skin or eye contact. Work in a fume hood to minimize inhalation risks, as the powder can become airborne. Store the compound in a tightly sealed container under an inert atmosphere (e.g., argon or nitrogen) at temperatures below 25°C. Protect from light and moisture to prevent degradation. Dispose of waste according to local regulations for organic sulfonamides.
B2B Procurement Guide
When sourcing Dansyl-L-proline, prioritize suppliers with ISO certification or GMP compliance to ensure product consistency. Request a Certificate of Analysis (CoA) detailing purity, moisture content, and residual solvents. Bulk buyers should negotiate pricing for quantities above 10 grams, as discounts may apply. Confirm shipping methods—cold chain logistics are recommended for international orders to maintain stability. Consider lead times, as custom synthesis may require 4-6 weeks.
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