Overview
Methyl salvianolate A is a methylated derivative of salvianolic acid A, a key bioactive compound extracted from Salvia miltiorrhiza (Danshen). This plant has been used for centuries in traditional Chinese medicine to treat cardiovascular diseases. The methyl ester form enhances stability and bioavailability, making it valuable for modern pharmaceutical applications. Research highlights its potent antioxidant and anti-inflammatory properties, which contribute to its therapeutic effects in ischemia-reperfusion injury, atherosclerosis, and neurodegenerative disorders. It is commonly synthesized via esterification of salvianolic acid A under controlled conditions to ensure high purity.
Physical and Chemical Properties
Methyl salvianolate A is a white crystalline powder with a molecular weight of 538.46 g/mol. It exhibits poor solubility in water but dissolves readily in organic solvents like methanol and ethanol, facilitating its use in drug formulations. The compound decomposes at temperatures above 180°C, requiring careful handling during processing. Its chemical structure includes multiple phenolic hydroxyl groups, which account for its strong free-radical scavenging activity. UV-Vis spectroscopy typically shows absorption peaks at 280 nm and 330 nm, useful for quality control in manufacturing.
Main Applications
In pharmaceuticals, methyl salvianolate A is primarily investigated for its cardioprotective and neuroprotective effects. It inhibits oxidative stress and reduces apoptosis in endothelial cells, making it a candidate for treating stroke and myocardial infarction. Clinical studies also explore its potential in diabetic complications and liver fibrosis. The compound is increasingly used as a reference standard in analytical laboratories to quantify salvianolic acids in herbal extracts. Additionally, it serves as an intermediate in synthesizing more complex derivatives with enhanced pharmacokinetic profiles.
Safety and Storage
While methyl salvianolate A is generally low in toxicity, standard laboratory precautions should be followed. Avoid inhalation of powder and direct skin contact; use PPE such as nitrile gloves and safety goggles. Spills should be contained with inert absorbents and disposed of as hazardous waste. Long-term stability requires storage at -20°C in amber glass vials with desiccants. Solutions prepared in DMSO or ethanol should be used within 24 hours to prevent degradation. Suppliers typically provide stability data under accelerated conditions (e.g., 40°C/75% RH for 6 months).
B2B Procurement Guide
Buyers should prioritize suppliers with ISO 9001 or GMP certification to ensure consistent quality. Key specifications include HPLC purity (≥98%), residual solvent levels (e.g., methanol <3000 ppm), and absence of heavy metals. Batch-specific COAs should detail chiral purity if applicable. Bulk purchases (100g+) often qualify for tiered pricing, with lead times of 4-8 weeks for custom synthesis. For research-grade quantities, consider distributors like Sigma-Aldrich or TCI, while contract manufacturers in China offer competitive rates for industrial-scale production (approximately $10,000/kg at 99% purity).
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