Overview
Product Specifications
| Parameter | Specification |
|---|---|
| Chemical Name | Ergosterol; Provitamin D₂ |
| CAS Number | 57-87-4 |
| Specification | ≥98.0% (HPLC) |
| Test Method | HPLC-UV, GC-FID, ICP-MS |
| Packaging | Double foil bags; 100g – 25kg |
| Key Benefits | Precursor to Vitamin D₂, immune regulation, skin barrier support, liver health, metabolic balance |
| Application | Dietary supplements, pharmaceutical intermediates, skincare formulas, feed additives, functional foods |
Uncompromising Quality: SRBio’s Manufacturing Excellence
1. Precision Quality Control
| Parameter | SRBio Standard | Competitor Average | Test Method |
|---|---|---|---|
| Ergosterol Purity (HPLC) | ≥98.0% | 95.0%–97.0% | HPLC-UV |
| Heavy Metals (Pb, As) | <0.1 ppm | ≤1.0 ppm | ICP-MS |
| Residual Solvents | ND | ≤500 ppm | GC-FID |
| Loss on Drying | ≤0.5% | ≤1.0% | Gravimetry |
| Microbial Limits | Total plate count <100 CFU/g; Pathogens negative | Standard USP limits | USP <61> & <62> |
2. Advanced Production Technology
- Controlled Microbial Fermentation: High-yield fungal strains ensure consistent output and natural origin.
- Solvent-Free Purification: Multi-stage recrystallization without harmful organic solvents for clean-label safety.
- Polymorph & Stability Control: Strict temperature and pressure control to maintain crystal integrity.
- Nitrogen-Flushed Packaging: Protects from oxidation, light, and moisture for long shelf life.
- Sustainable Production: Non-GMO, vegan-friendly, zero animal derivatives, low carbon footprint.
3. Stability & Shelf-Life Superiority
| Parameter | SRBio Ergosterol | Conventional Ergosterol |
|---|---|---|
| Stability (25°C / 60% RH) | ≥95% potency at 24 months | ~85% potency at 12 months |
| Light Resistance | Strong; protected formulation | Rapid degradation under light |
| pH Stability | Stable in pH 3.0–8.0 | Unstable in neutral/alkaline conditions |
| Storage | Cool, dry, dark place | Strict light-proof & low-humidity storage |
Scientific Evidence: Mechanism & Clinical Efficacy
1. Vitamin D₂ Precursor Activity
Mechanism: Ergosterol is converted to vitamin D₂ (ergocalciferol) under UV irradiation, supporting calcium absorption, bone mineralization, and musculoskeletal health.
Clinical Outcomes:
- Essential for maintaining normal bone density and preventing bone loss.
- Supports healthy immune function via vitamin D₂-mediated pathways.
2. Immune Modulation
Mechanism: Regulates innate and adaptive immune responses by supporting membrane integrity and cell signaling.
Clinical Outcomes:
- Promotes balanced inflammatory response.
- Supports respiratory and systemic immune resilience.
3. Skin Health & Barrier Repair
Mechanism: Reinforces lipid bilayer structure, reduces transepidermal water loss (TEWL), and supports skin cell renewal.
Clinical Outcomes:
- Improves skin hydration, elasticity, and smoothness.
- Protects against environmental stress and oxidative damage.
4. Liver & Metabolic Support
Mechanism: Supports liver cell membrane stability and promotes healthy lipid metabolism.
Clinical Outcomes:
- Aids liver tissue repair and normal detoxification function.
- Helps maintain healthy cholesterol and lipid profiles.
5. Antifungal & Pharmaceutical Value
Mechanism: Critical structural component of fungal cell membranes, making it a key target for antifungal drug development.
Application Value:
- Core intermediate for vitamin D₂, cortisone, and steroid hormone APIs.
- Used in anti-trypanosomal and antifungal drug research and production.
Formulation-Ready Advantages
| Property | SRBio Ergosterol | Competitor Average |
|---|---|---|
| Format | Free-flowing crystalline powder | Crystalline powder |
| Purity Consistency | ≥98.0% batch-to-batch | Variable |
| Organoleptic | Neutral taste & odor | Noticeable characteristic odor |
| Solubility | Good solubility in lipid matrices; dispersible in formulations | Poor aqueous solubility |
| Flowability | Excellent for tableting & encapsulation | Poor |
| Stability | 24-month shelf life | 12-month typical |
Application-Specific Benefits
- Dietary Supplements: Ideal for capsules, tablets, softgels; supports bone, immune, and daily wellness formulas.
- Pharmaceutical Manufacturing: GMP-grade precursor for vitamin D₂ and steroid API production.
- Skincare Products: Compatible with creams, serums, and lotions for barrier repair and anti-aging.
- Functional Foods & Beverages: Suitable for fortified powders, bars, and lipid-based drinks.
- Animal Nutrition: Feed additive to support skeletal health and vitamin D synthesis.
Supply Chain & Compliance Leadership
1. Audited Transparency & Traceability
- Blockchain Traceability: Batch-specific COA and production records accessible via QR code.
- Dual-Sourcing Strategy: ISO 22000 / HACCP certified facilities in China and EU.
- Global Stock Hubs: Pre-positioned inventory in US, EU, and Asia for fast fulfillment.
2. Global Regulatory Certifications
| Certification / Compliance | Status |
|---|---|
| cGMP (FDA-registered facility) | Fully compliant |
| ISO 22000 / HACCP | Certified |
| Halal & Kosher | Certified |
| Vegan & Non-GMO | Verified |
| Allergen-Free | Soy-free, gluten-free, dairy-free |
| USP/NF/FCC Grade | Compliant |
3. Supply Chain Resilience
- Redundant production lines and multi-region warehouses minimize supply risks.
- Samples shipped within 48 hours; bulk orders with expedited logistics available.
Competitive Breakdown: SRBio vs. Market Alternatives
| Capability | SRBio Ergosterol | Generic Ergosterol |
|---|---|---|
| Purity | ≥98.0% | 95.0%–97.0% |
| Stability | 24-month shelf life | 12-month typical |
| Heavy Metals | <0.1 ppm | ≤1.0 ppm |
| Residual Solvents | ND | Often detectable |
| Production | Fermentation-based, solvent-free | Chemical synthesis with solvents |
| Certifications | Full global compliance | Limited |
| Formulation Flexibility | High | Moderate |
Partner Success Stories
European Pharmaceutical API Manufacturer
“SRBio Ergosterol delivers consistent ≥98% purity and full regulatory documentation, which streamlined our vitamin D₂ production process. The stability and supply reliability have greatly reduced our production risks.”
— Head of R&D
US Skincare Brand
“We use SRBio Ergosterol in our barrier-repair serum line. Its excellent compatibility and skin-friendly profile make it a star ingredient for sensitive and dry skin formulas.”
— Product Development Director
Technical Partnership Program
1. Co-Development Services
- Stability Studies: ICH-guided testing for capsules, creams, beverages, and pharma blends.
- Custom Grades: Tailored purity and particle size for pharmaceutical, cosmetic, or feed use.
- Bioavailability & Safety Testing: Full analytical support for regulatory filings.
2. Market-Ready Solutions
- Private Label Kits: Turnkey capsules, tablets, and softgels with full dossiers.
- Custom Packaging: Nitrogen-flushed foil bags, drums with desiccants, branded options.
- Regulatory Support: Complete documentation for GRAS, Novel Food, and local health authority submissions.

