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L-Cysteine Powder

Product Name: L-Cysteine Powder
CAS No.: 52-90-4
EINECS No.: 200-158-2
Molecular Formula: C₃H₇NO₂S
Molecular Weight: 121.16
Appearance: White crystalline powder or white crystals
Assay:≥99.0%
Test Method:Titration/HPLC
Product Description

L-Cysteine Powder – Premium Amino Acid Supplement for Health & Nutrition

Easy Health Inc. presents you the L-Cysteine Powder, pharmaceutical quality, with a guaranteed test of ≥99.0%, manufactured by sophisticated fermentation technology. As the top sulfur-containing amino acid, our product is the key building block for glutathione synthesis, your body's master antioxidant. With over 11 years of industry experience, we assure you that we maintain high quality standards in each of our batches, including ISO, Halal, Kosher and FDA registration. Our white crystalline powder, CAS No. 52-90-4, with transmittance≥98.0%, loss on drying≤0.5% and heavy metals≤10ppm, is of higher quality and is suitable for pharmaceutical, nutraceutical, food and cosmetic applications across the globe.

L-Cysteine

What Makes Our L-Cysteine Powder Different?

Ingredients you can count on. What makes our product special? Guaranteed purity and reliable performance.

We manufacture this vital amino acid utilising controlled fermentation technologies that guarantee Vegan, Halal and Kosher compliance. Unlike other keratin-based alternatives, our process delivers a clean, animal-free result every time.

Our cysteine powder is extremely flexible because of its reactive thiol group (-SH). It works effectively from formulations, from antioxidant supplements to protein fortification, even cosmetic applications requiring keratin synthesis support.

L-Cysteine Powders advantage

Technical Specifications

Parameter Specification
Product Name L-Cysteine Powder
CAS No. 52-90-4
EINECS No. 200-158-2
Molecular Formula C₃H₇NO₂S
Molecular Weight 121.16
Appearance White crystalline powder or white crystals
Assay ≥99.0%
Test Method Titration/HPLC
Loss on Drying ≤0.5%
Residue on Ignition ≤0.1%
Transmittance ≥98.0%
Chloride (as Cl) ≤0.02%
Sulfate (as SO₄) ≤0.02%
Heavy Metals (as Pb) ≤10 ppm
Lead (Pb) ≤3 ppm
Arsenic (As) ≤1 ppm
Iron (Fe) ≤0.001%
Ammonium (NH₄) ≤0.02%
Other Amino Acids ≤0.5%
Total Aerobic Microbial Count ≤1,000 CFU/g
Yeast & Mold Count ≤100 CFU/g
E. coli Negative
Salmonella Negative/25g

L-Cysteine Powders Packing

Key Applications Across Industries

Solutions you can count on for your tricky formulations. This Amino Acid Powder meets different demands of production and effect.

Nutraceutical Supplements: As the rate limiting precursor for glutathione synthesis, it supports cellular antioxidant defences for your consumers. It is used by formulators for immune health, liver support and detox products.

Pharmaceutical Applications: It can be used in respiratory health formulations due to its mucolytic characteristics. It is also a precursor in the synthesis of N-Acetyl Cysteine (NAC) and other medicinal chemicals.

Food Industry: Its dough conditioning characteristics shorten mixing time and assure texture uniformity in industrial production, therefore improving your baking formulas.

Cosmetic Goods: This sulphur amino acid supplies the structural building blocks your goods need to enable keratin production for hair and skin formulations.

L-Cysteine Powders application

Quality Assurance You Can Verify

Each batch is thoroughly tested before it reaches you. 100% traceability from source ingredients to final packaging guaranteed.

Our quality control team uses proven HPLC and titration procedures to screen for heavy metals, microbiological contamination and chemical purity. A full Certificate of Analysis confirming compliance with USP, EP and international pharmacopoeia standards is provided with each order.

Our products are stored in regulated settings below 25 degrees Celsius in nitrogen flushed packaging to prevent oxidation. This focus on stability ensures you get L-Cysteine Powder with consistent activity over the whole 2-year shelf life.

L-Cysteine Powders R&D

Flexible Supply Solutions for Your Business

You work to tight deadlines. We've engineered our supply chain to be as fast as you are.

Standard orders are shipped within 3-5 days from our stock of ready items. Our production staff works directly with you on custom specs or bulk orders to meet your project deadlines.

We provide flexible packaging options: 25 kg nitrogen-flushed bags and 500-1,000 kg huge bags. Custom Packaging Solutions. Custom packaging solutions for your handling systems and storage needs.

If you require air freight for urgent orders or sea freight for bulk delivery at a good price, our logistics partners FedEx, DHL, UPS will ensure your products reach safely.

L-Cysteine Powders Bulk Goods

Technical Support That Accelerates Your Success

You don't have to face the formulation issues by yourself. Our R&D team supports you with complete technical support to your product development cycle.

We assist you optimise dosage and increase stability in your particular matrix and troubleshoot processing concerns. If you are establishing a new line of supplements or scaling up food production, we can provide practical advise based on our experience in real-world applications.

We offer a complete service for OEM and ODM partners, from formula formulation to packaging design and regulatory documents. Tap into our 11+ years of experience to speed up your time to market.

L-Cysteine Powders Certification

FAQ

Q: What is L-Cysteine used for in formulations?

A: It's an essential sulfur-containing amino acid that serves as the direct precursor to glutathione synthesis. You'll find it used for antioxidant support, keratin formation in hair and skin products, protein synthesis, detoxification support, and as a reducing agent in various industrial applications.

Q: What is the purity of your product?

A: Our standard grade delivers ≥99.0% purity verified by HPLC and titration. We can provide pharmaceutical-grade or food-grade certifications depending on your application requirements.

Q: How should I store it to prevent degradation?

A: Store in a cool, dry place below 25°C in tightly sealed containers. The thiol group is sensitive to oxidation, so nitrogen-flushed packaging and protection from light and moisture are essential for maintaining stability. Shelf life is 2 years under proper storage conditions.

Q: What certifications do you provide?

A: Certificates of Analysis are supplied with each batch to show compliance with international standards. We are registered with ISO, HACCP, Halal, Kosher and the FDA and can give organic certifications (USDA NOP, EU Organic) upon request.

Q: Is it suitable for use in liquid formulations?

A: yes but you will have to deal with the oxidation stability as it is highly soluble in water. We recommend to add chelating agents (e.g. EDTA) or to maintain slightly acidic pH. Our technical team can give you particular help with your formulation.

Q: What is your Minimum Order Quantity?

A: We can do small scale testing as well as big commercial orders. Talk to us to learn more about your volume requirements and we’ll provide flexible solutions that fit your stage of business.

Q: What is the difference between cystine vs cysteine?

A: Cysteine (C₃H₇NO₂S) has a free thiol group (-SH) that makes it reactive and ready for biological reactions. Cystine is two cysteine molecules bonded by a disulphide bridge . Different cellular transporters handle each type, so your body can manage how it uses sulphur amino acids.

Q: Is this vegan and free of allergens?

A: Of course. Our fermented product is 100% vegan, non-GMO and does not contain any of the most common allergens. Unlike previously used keratin-hydrolysis technologies that used animal resources, our procedure ensures a plant-based origin, and is acceptable for a variety of dietary restrictions.

L-Cysteine Powders Shipment

Contact Us for Custom Solutions

Ready to enhance your formulations with L-Cysteine Powders? Email us at devin@easyhealthbio.com for technical specifications, custom quotes, or samples today.