Overview
Pregnenolone is a naturally occurring steroid hormone precursor synthesized from cholesterol in the adrenal glands, brain, and gonads. It serves as a metabolic intermediate in the production of progesterone, cortisol, DHEA, and other steroids. Often termed the 'mother hormone,' it plays a critical role in endocrine and neurological functions. Initially isolated in the 1930s, pregnenolone gained attention for its potential cognitive and anti-aging effects. Today, it is used in pharmaceutical formulations and as a dietary supplement, though regulatory status varies by region.
Physical and Chemical Properties
Pregnenolone is a lipophilic compound with a molecular weight of 316.48 g/mol. Its crystalline form is stable under recommended storage conditions but degrades upon prolonged exposure to heat or light. The compound's insolubility in water necessitates organic solvents for laboratory or industrial use. Key chemical features include a Δ5-3β-hydroxyl structure, which is essential for its enzymatic conversion to downstream steroids. Analytical methods like HPLC and mass spectrometry are employed to verify purity, typically ≥98% for pharmaceutical-grade material.
Main Applications
In pharmaceuticals, pregnenolone is a key intermediate in synthesizing corticosteroids, sex hormones, and neuroactive steroids. It is also investigated for potential therapeutic roles in neurodegenerative diseases and mood disorders due to its neurosteroid activity. Supplement manufacturers market pregnenolone for cognitive enhancement and anti-aging, though clinical evidence remains limited. Research applications include studying steroidogenesis pathways and receptor interactions.
Safety and Storage
Pregnenolone requires careful handling to avoid inhalation or skin contact. Lab personnel should use gloves, goggles, and fume hoods. Ingestion or misuse may lead to hormonal imbalances; thus, it is regulated as a prescription drug in some countries. Storage mandates protection from moisture and light, ideally in sealed containers at room temperature. Stability testing recommends avoiding temperatures above 25°C to prevent degradation.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO certification or cGMP compliance, especially for pharmaceutical use. Batch-specific Certificates of Analysis (CoA) confirming purity (>98%) and solvent residues are critical. Bulk pricing tiers apply, with discounts for orders exceeding 100 grams. Due to regulatory variability, verify import/export restrictions—for example, the FDA classifies pregnenolone as an unapproved drug in the U.S., while the EU permits supplement use under specific conditions.
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