2-amino-3-mercaptopropionic acid(cysteine) cas 3374-22-9
Chemical Name: 2-Amino-3-mercaptopropionic acid(Cysteine)
CAS No: 3374-22-9
Molecular Formula: C3H7NO2S
Molecular weight: 121.16
Property:2-Amino-3-mercaptopropionic acid(Cysteine) appears White to off white crystalline powder
2-Amino-3-mercaptopropionic Acid (Cysteine) CAS 3374-22-9: Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
2-Amino-3-mercaptopropionic Acid (Cysteine) (CAS 3374-22-9) is a sulfur-containing amino acid with the molecular formula C3H7NO2S. It is widely used in pharmaceuticals, food additives, and cosmetic formulations due to its antioxidant properties and role in biochemical processes.
Key Specifications
| Parameter | Details |
|---|---|
| CAS Number | 3374-22-9 |
| Molecular Formula | C3H7NO2S |
| Molecular Weight | 121.16 g/mol |
| Appearance | White crystalline powder |
| Purity | ≥98.5% |
| Storage | 2-8°C, dry, airtight container |
Comparative Analysis
| Feature | Cysteine (CAS 3374-22-9) | Cystine | Methionine |
|---|---|---|---|
| Sulfur Content | High (thiol group) | Disulfide bond | Single sulfur atom |
| Solubility | Water-soluble | Low solubility | Moderate |
| Antioxidant Activity | Strong | Weak | Moderate |
2. Applications & Uses
Pharmaceutical Industry
- Antioxidant Therapy: Neutralizes free radicals in metabolic disorders.
- Drug Stabilizer: Prevents oxidation in injectable formulations.
- Detoxification: Binds to heavy metals (e.g., mercury, lead).
Food & Beverage
- Dough Conditioner: Enhances elasticity in baked goods.
- Flavor Enhancer: Used in meat and savory products.
- Shelf-life Extender: Reduces lipid oxidation in oils.
Cosmetics
- Hair Care: Strengthens keratin bonds in hair treatments.
- Skin Protection: Reduces UV-induced oxidative stress.
3. Usage Guidelines
Pharmaceutical Formulations
- Dissolve in sterile water at 40-50°C.
- Maintain pH 6.5-7.5 for optimal stability.
- Use nitrogen blanket to prevent oxidation.
Food Additive Protocols
- Add 0.1-0.5% by weight during mixing.
- Combine with ascorbic acid for synergistic effects.
4. Case Studies
Case 1: Injectable Drug Stabilization
A European pharma company reduced particulate formation by 72% using 0.3% cysteine in antibiotic solutions.
Case 2: Gluten-Free Bread Production
Addition of 0.2% cysteine improved dough elasticity by 40% in gluten-free formulations.
5. Client Success Stories
Client A: Nutraceutical Manufacturer
Challenge: Oxidation of omega-3 capsules
Solution: 0.1% cysteine coating
Result: 18-month stability achieved
Client B: Cosmetic Brand
Challenge: Hair breakage in keratin treatments
Solution: 2% cysteine in conditioning phase
Result: 35% reduction in breakage
6. Contact for Technical Inquiries
Email: info@vivalr.com
Phone: (86) 15866781826



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