For procurement managers in the pharmaceutical, nutraceutical, and food industries, sourcing essential ingredients like L-Leucine (CAS 61-90-5) requires careful consideration of quality, price, and supplier reliability. L-Leucine, as a critical amino acid, is fundamental to many health-related products, making its procurement a strategic decision. This guide offers insights into effectively sourcing L-Leucine, emphasizing key factors for a successful purchase.
When evaluating L-Leucine for purchase, several quality parameters are paramount. Firstly, the purity level, often indicated by an assay percentage (e.g., 99.0-100.5%), is crucial. For pharmaceutical applications, higher purity is essential. Secondly, regulatory compliance, such as adherence to USP, EP, or FCC standards, ensures the ingredient is suitable for its intended use. Understanding the physical form (typically a white crystalline powder) and solubility characteristics is also important for formulation compatibility.
Price is naturally a significant consideration. Bulk L-Leucine pricing from China manufacturers is generally competitive, influenced by production scale, raw material costs, and market demand. As a leading supplier in China, we strive to offer cost-effective solutions without compromising on quality. When comparing prices, it’s important to consider the total value proposition, including quality assurance, consistent supply, and customer support.
Reliability of the manufacturer and supplier is perhaps the most critical factor. A dependable partner ensures a steady supply chain, mitigating risks of production delays or quality inconsistencies. We are a reputable manufacturer and supplier of L-Leucine (CAS 61-90-5), dedicated to providing consistent quality and excellent service. We encourage potential buyers to request a quote and sample to assess our product and capabilities firsthand. By choosing a trusted source, you can confidently buy L-Leucine and ensure the success of your products.
Manufacturing Facilities






Professional Export Experience
to Global Customers
1. 20 years of R&D, manufacturing and sales experience, serving customers in 60 countries and regions around the world;
2. Own R&D laboratory, pilot platform and large-scale production workshop, which can meet the audit requirements of global customers;
3. We can satisfy customers' perfect transition from small scale lab requirements (gram level) to commercialization requirements (hundred tons level).
A: We don't have Minimum Order Quantity, exact quantity should be provided before quotation for us to calculate the exact cost.
A: We don't provide free samples due to lots of request and expensive international courier's cost, we can deduct the sample charge after commercial order placed.
A: Our payment terms: Small or sample order: T/T IN ADVANCE. Commercial order: First order should be by T/T IN ADVANCE or L/C at sight, and following orders T/T 30~90days is acceptable subject to approval of credit application.