Overview
Sennoside is a bioactive glycoside extracted from senna leaves (Cassia angustifolia or Cassia senna), traditionally used as a stimulant laxative. It exists in two primary forms, Sennoside A and B, which are diastereomers. As a standard reference material (e.g., 源叶标准品), it ensures quality control in pharmaceutical production and research. The compound’s mechanism involves hydrolysis by gut bacteria into active anthraquinone metabolites, which stimulate colonic motility. Its standardized extracts are regulated in pharmacopeias (USP, EP) for constipation relief formulations.
Physical and Chemical Properties
Sennoside presents as a fine yellow-brown powder with moderate solubility in polar solvents like water and methanol. Its molecular structure comprises two glucose units linked to rhein anthrone aglycones. Thermal analysis shows decomposition near 190°C without a distinct boiling point. Chromatographic methods (HPLC-UV) are essential for purity assessment due to potential impurities from plant extraction. The compound is stable under dry, dark conditions but degrades in strong acids/bases or prolonged UV exposure.
Main Applications
Pharmaceutical formulations dominate sennoside use, particularly in OTC laxatives (e.g., tablets, teas). Clinical doses range from 8–30 mg/day, often combined with bulking agents. It’s also a reference standard in herbal drug testing to quantify senna content. Research applications include studying gut microbiota interactions and natural product metabolism. Emerging cosmetic uses exploit its anti-inflammatory properties, though evidence remains preliminary.
Safety and Storage
Sennoside requires cautious handling to avoid inhalation or skin contact. Chronic overuse may lead to electrolyte imbalances or laxative dependence. Storage mandates airtight containers with desiccants at 15–25°C; refrigerated transport is recommended for bulk quantities. Regulatory classifications vary: FDA approves it as a monograph drug, while EMA mandates warning labels about prolonged use. Workplace exposure limits are unspecified, but PPE (gloves, masks) is advised during industrial processing.
B2B Procurement Guide
Bulk buyers should prioritize suppliers with ISO 17025 accreditation for reference materials. Key specifications include HPLC purity (≥95%), residual solvent levels, and microbial limits per USP guidelines. MOQs typically start at 1 kg, with lead times of 2–4 weeks for custom purifications. Audit supply chain transparency—sennoside is often sourced from India or China, requiring documentation of plant origin and extraction methods. Negotiate testing protocols (e.g., COA verification by third-party labs) to mitigate quality risks.
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