Overview
Isomangostin is a bioactive xanthone compound primarily extracted from the pericarp of mangosteen (Garcinia mangostana), a tropical fruit native to Southeast Asia. It belongs to a class of polyphenols known for their diverse pharmacological effects, including antioxidant and anti-inflammatory activities. Research suggests isomangostin may modulate cellular pathways linked to chronic diseases, making it a subject of interest in drug discovery and functional food formulations. Its structural similarity to other mangosteen xanthones, like α-mangostin, contributes to its biological potency but requires precise analytical methods for identification.
Physical and Chemical Properties
Isomangostin appears as a yellow crystalline solid with a melting point around 180–182°C. Its molecular structure includes hydroxyl and methoxy groups, which influence its solubility and reactivity. The compound is lipophilic, dissolving well in dimethyl sulfoxide (DMSO) and ethanol but exhibiting limited water solubility. UV-Vis spectroscopy typically shows absorption maxima at 240 and 320 nm, useful for quantification. Stability studies indicate sensitivity to prolonged light exposure and oxidation, necessitating inert storage conditions. Analytical techniques like HPLC and LC-MS are essential for purity assessment due to potential co-extraction with similar xanthones.
Main Applications
In pharmaceuticals, isomangostin is investigated for its potential to inhibit pro-inflammatory cytokines and oxidative stress markers, relevant to conditions like arthritis and neurodegenerative diseases. Preclinical studies highlight its antimicrobial effects against Gram-positive bacteria and fungi. The nutraceutical industry incorporates it into dietary supplements for its purported health benefits, often combined with other mangosteen extracts. Cosmeceutical formulations leverage its antioxidant properties to target skin aging, with serums and creams utilizing concentrations of 0.1–1%. Challenges include bioavailability optimization, often addressed via nanoencapsulation technologies.
Safety and Storage
While generally regarded as low-toxicity, isomangostin lacks comprehensive human safety data. In vitro studies suggest moderate cytotoxicity at high concentrations (>50 μM), advising caution in dosage design. Skin contact may cause mild irritation, requiring personal protective equipment during handling. Long-term storage demands airtight containers under nitrogen atmosphere to prevent degradation. Suppliers often provide stabilized versions with antioxidants like BHT. Regulatory status varies by region; in the EU, it may fall under Novel Food regulations if intended for ingestion.
B2B Procurement Guide
B2B buyers should prioritize suppliers with documented ISO 9001 or GMP compliance, especially for pharmaceutical-grade material. Key specifications include HPLC purity (≥95% for research, ≥98% for commercial use), residual solvent levels (e.g., <0.5% ethanol), and microbial limits. Batch-to-batch consistency can be ensured via COA review and third-party testing. MOQs typically start at 10 grams for lab-scale purchases, with bulk orders (1 kg+) requiring lead times of 4–8 weeks. Emerging suppliers in Southeast Asia may offer competitive pricing but warrant rigorous quality audits.
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