Overview
Lobetyolin is a polyacetylene glycoside isolated from Codonopsis pilosula (Dangshen), a herb widely used in traditional Chinese medicine. As a marker compound for quality control, its concentration is often measured to standardize herbal extracts. The compound exhibits immunostimulant and adaptogenic properties, contributing to Dangshen's reputation as a Qi-tonifying agent. Industrial extraction typically involves ethanol or methanol reflux, followed by chromatographic purification. Recent research highlights its potential in modulating immune responses and mitigating oxidative stress, though clinical evidence remains limited. Its structural similarity to other bioactive polyacetylenes makes it a subject of pharmacological interest.
Physical and Chemical Properties
Lobetyolin crystallizes as a white powder with moderate stability under controlled conditions. Its molecular structure features a conjugated diyne moiety linked to a glycoside group, responsible for UV absorption at 260-280 nm (useful for HPLC detection). The compound shows greater solubility in polar organic solvents than in water, influencing extraction methodologies. Thermogravimetric analysis indicates decomposition above 200°C. The glycosidic bond confers relative stability at physiological pH, though enzymatic hydrolysis may occur in biological systems. Fourier-transform infrared spectroscopy (FTIR) typically shows characteristic peaks at 3300 cm⁻¹ (O-H stretch) and 2150 cm⁻¹ (C≡C stretch).
Main Applications
In B2B markets, lobetyolin is primarily traded as a reference standard for HPLC quantification in herbal products, with certified materials commanding premium pricing. Pharmaceutical manufacturers incorporate it into immunomodulatory formulations, often combined with Astragalus or Ginseng extracts. Nutraceutical applications include adaptogenic supplements targeting stress resilience. The compound also serves as a biochemical marker in agricultural quality control, where its concentration correlates with Codonopsis cultivation conditions. Emerging research explores its role in adjuvant therapies for chemotherapy-induced immunosuppression, though commercial applications remain experimental. Industrial buyers should prioritize suppliers who provide third-party validated Certificate of Analysis (CoA) documents.
Safety and Storage
As a moderately bioactive compound, lobetyolin requires handling with nitrile gloves and particulate respirators in industrial settings. Material Safety Data Sheets (MSDS) classify it as a irritant to mucous membranes. Storage in amber glass vials under nitrogen atmosphere prevents oxidative degradation. Stability studies indicate 24-month shelf life when refrigerated at 4°C with desiccant. For laboratory use, working solutions in methanol should be prepared fresh weekly. Bulk shipments typically use vacuum-sealed aluminum foil bags with oxygen absorbers. Regulatory status varies by region - while unregulated in most markets, documentation for FDA 21 CFR 111 compliance strengthens B2B transactions.
B2B Procurement Guide
Commercial lobetyolin is available in three purity grades: analytical standard (≥98%), extract grade (50-70%), and crude powder (10-30%). Pricing follows nonlinear scaling, with 100g orders often costing 30-40% less per gram than 1g samples. Leading suppliers include Phytomarker (China), ChromaDex (US), and Extrasynthese (France). Key procurement considerations include batch-to-batch consistency (verified by HPLC-UV), residual solvent levels (methanol <3000ppm), and microbial limits per USP <61>. For extract applications, confirm the Codonopsis source region - Shanxi province material typically contains 0.2-0.8% lobetyolin, versus 0.1-0.3% in Sichuan varieties. MOQs for GMP-grade material usually start at 100g.
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