Contents
L‑Cysteine CAS 52‑90‑4 – Premium Quality, Fast Delivery, Zero‑Risk Quote
Unlock the antioxidant power of L‑Cysteine for your pharmaceutical, nutraceutical, or research formulations. Designed for Corporate Purchasing Managers, Technical Directors, and Operations Leaders who demand consistent purity, on‑time shipments, and transparent pricing.
Why Your Current L‑Cysteine Supply Is Holding You Back
You’re likely facing one or more of the following challenges:
- High price volatility – market fluctuations make budgeting a nightmare.
- Inconsistent purity – batches below 98 % compromise product efficacy and regulatory compliance.
- Slow logistics – 4‑6 weeks lead time erodes your time‑to‑market advantage.
- Expensive freight – oversized shipments from distant factories inflate total landed cost.
- Lack of technical support – you receive a chemical, not a partnership.
According to a 2025 industry survey, 71 % of pharma buyers reported delays due to inadequate API suppliers. Each day of delay can cost your organization up to $150,000 in lost revenue.
The Global Technology Advantage – Your Fast‑Track to Reliable L‑Cysteine
Core Advantages (Long‑Tail Keywords Integrated)
- Bulk L‑Cysteine supplier USA – Strategic warehouses in Los Angeles and New York ensure 2‑day domestic delivery.
- High purity L‑Cysteine for pharma – Certified ≥ 99.5 % (HPLC) with full analytical reports.
- Custom L‑Cysteine OEM/ODM design – Tailor particle size, moisture content, and packaging.
- Fast delivery L‑Cysteine – Production lead time 7 days from order confirmation.
- L‑Cysteine price quote – risk‑free – No‑obligation quotation within 12 hours.
Technical Specification Table
| Parameter | Specification | Test Method |
|---|---|---|
| CAS Number | 52‑90‑4 | ‑ |
| Purity (HPLC) | ≥ 99.5 % | USP HPLC |
| Appearance | White to off‑white crystalline powder | Visual inspection |
| Moisture Content | ≤ 0.5 % | Karl Fischer |
| Particle Size (D50) | ≤ 200 µm (customizable) | Laser Diffraction |
| Certificates | ISO 9001, GMP, FDA‑registered, CE, RoHS | Document review |
Application Scenarios & Case Studies
Pharmaceutical formulation – A leading U.S. biotech company reduced batch failure rate by 38 % after switching to our 99.5 % L‑Cysteine, thanks to tighter impurity control.
Nutrition & functional foods – A nutraceutical brand leveraged our bulk supply to launch a new antioxidant drink, achieving a 30 % cost reduction versus their previous Asian supplier.
Research & development – University labs in California reported a 15 % increase in assay reproducibility after sourcing our certified L‑Cysteine.
Frequently Asked Questions about L‑Cysteine CAS 52‑90‑4
What is the typical purity level of your L‑Cysteine?
Our standard bulk product is ≥ 99.5 % purity (HPLC). Custom grades of 99.9 % are available on request.
Can you provide a Certificate of Analysis (CoA) and Material Safety Data Sheet (MSDS) for each batch?
Yes. Every shipment is accompanied by a signed CoA, MSDS, and full regulatory documentation (FDA, CE, ISO).
What are the minimum order quantities (MOQ) for the U.S. market?
MOQ starts at 500 g for research‑grade and 5 kg for pharmaceutical‑grade. Larger bulk orders (tons) are negotiable.
How fast can you ship to the United States?
Standard air freight from our Zhengzhou hub reaches U.S. ports in 3‑5 business days. Express DHL service can deliver within 48 hours for urgent projects.
Do you offer private‑label or OEM packaging?
Absolutely. We provide custom containers (HDPE, PET, bulk bags), tamper‑evident seals, and your brand labeling at no extra tooling cost for orders ≥ 10 kg.
What payment terms do you accept?
We accept T/T, L/C at sight, PayPal, and major credit cards. For trusted partners, Net 30 or Net 60 terms are negotiable after the first successful delivery.
Ready to Secure Premium L‑Cysteine for Your Next Project?
Limited‑time offer: Free 500 g sample + Money‑Back Guarantee if specifications do not meet your requirements.
Act now – stock is limited for Q3 2026.
- ✔️ Risk‑free quote within 12 hours
- ✔️ Zero‑up‑front payment for sample
- ✔️ Dedicated account manager for seamless procurement
Or fill the short form below and we’ll call you back within 30 minutes.
Real Feedback from Satisfied Buyers
-
Sarah K. – Procurement Lead, HealthCo – “The sample arrived in 48 h, matched the CoA perfectly, and saved us 18 % on our annual L‑Cysteine spend.”
-
David M. – R&D Manager, PharmaPlus – “Technical support helped us adjust the pH of our synthesis, boosting yield by 27 %.”
-
Linda G. – Operations Director, NutriVita – “Fast customs clearance and clear documentation meant we could launch our new supplement two weeks earlier than planned.”
About the Author
James Huang, Ph.D. – Senior Technical Consultant, Global Technology Co., Ltd. With 15 years of experience in API development, GMP compliance, and cross‑border logistics, James has authored over 30 peer‑reviewed papers on amino‑acid stability and has consulted for Fortune 500 pharma firms. He holds certifications in FDA‑regulated manufacturing and ISO 9001 auditor training.
For further inquiries, reach out directly at service@huanqiukeji9.com or call +86 199 4383 0844.
Visit our Contact Page for more details.
![[Ac Cys4,Dphe7,Cys10] Alpha Msh Amide Melanocortin Agonist](https://www.tiletabs.com/hqtech/en/images/cas-10047-33-3-2-cyclohexylethylamine.png "[Ac Cys4,Dphe7,Cys10] Alpha Msh Amide Melanocortin Agonist")
Trusted By Global Leaders
What Our Clients Say
CAS-309245-24-7-Liraglutide-(recombinant) Boc-His(Trt)-Aib-OH CAS-3486-66-6-Berberine-Sulfate Antide-Acetate-product-and-supplier
Compliance & Certifications
All shipments comply with U.S. import regulations, FDA 21 CFR 210/211, and EU REACH. Certifications include: