Overview
Ginkgolide B is a biologically active diterpenoid compound isolated from Ginkgo biloba leaves, recognized as one of the key marker compounds for standardizing Ginkgo extracts. As a reference standard, it plays a critical role in pharmaceutical quality control and pharmacological research due to its unique platelet-activating factor (PAF) receptor antagonism. Chemically classified as a terpene trilactone, Ginkgolide B is part of the ginkgolide family (A-J) with distinct cage-like molecular structures. Its standardized form is essential for ensuring consistency in herbal preparations and validating analytical methods in compliance with pharmacopeial requirements.
Physical and Chemical Properties
Ginkgolide B crystallizes as a white powder with a high melting point around 280°C (with decomposition). Its molecular structure contains three lactone rings and a tert-butyl group, contributing to its stability and specific optical rotation properties. The compound shows limited water solubility but dissolves well in organic solvents like dimethyl sulfoxide (DMSO) and methanol. Spectroscopic characteristics include strong UV absorption at 220 nm, useful for HPLC analysis. The compound is relatively stable under proper storage conditions but may degrade upon prolonged exposure to heat, light, or extreme pH levels. Its purity is typically verified via reverse-phase HPLC with UV detection, often requiring ≥98% purity for reference standards.
Main Applications
In pharmaceutical manufacturing, Ginkgolide B serves as a primary reference standard for quality control of Ginkgo biloba extracts, ensuring batch-to-batch consistency in active compound content. Regulatory bodies like USP and EP mandate its use for standardization in herbal medicinal products. Research applications focus on its neuroprotective properties, particularly in studying cerebral ischemia, Alzheimer's disease, and inflammation modulation. As a selective PAF receptor antagonist, it's valuable for investigating thrombosis and bronchoconstriction pathways. Additionally, it's employed in analytical method validation for Ginkgo-based products in nutraceutical and cosmetic industries.
Safety and Storage
While generally considered low-risk in standardized formulations, pure Ginkgolide B requires careful handling due to potential pharmacological activity. Laboratory personnel should use nitrile gloves and safety goggles to prevent skin/eye contact, and avoid generating airborne dust during weighing. Long-term storage demands airtight amber vials under refrigerated conditions (2-8°C) with desiccants to prevent moisture absorption. Stability studies indicate degradation risks when exposed to temperatures above 40°C or direct sunlight. For transport, cold chain logistics are recommended for bulk quantities to maintain stability and shelf life.
B2B Procurement Guide
Pharmaceutical-grade Ginkgolide B should be sourced from GMP-compliant suppliers providing full traceability documentation, including Certificate of Analysis (COA) with HPLC purity profiles, residual solvent data, and heavy metal testing results. Batch-specific NMR and mass spectrometry reports add verification layers. Buyers should prioritize suppliers with ISO 17025 accredited testing facilities and check for compliance with relevant pharmacopeias (USP, EP, or JP). MOQ typically starts at 1g for research-grade material, with bulk discounts available for 100g+ orders. Lead times vary from 2-6 weeks depending on purity specifications and current inventory levels.
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