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L-Cysteine (CAS 52-90-4) is far more than just a biological building block; it is a highly versatile reagent in organic synthesis. Its distinct chemical structure, particularly the presence of a nucleophilic thiol (-SH) group, makes it a cornerstone for numerous chemical transformations crucial to the fine chemical and pharmaceutical industries. Understanding the reactivity of L-Cysteine is key for chemists and procurement specialists seeking to optimize synthetic routes and source essential raw materials.
The thiol group of L-Cysteine readily participates in a variety of reactions. It can undergo oxidation to form disulfide bonds, a process critical in protein structure and also exploited in specific synthetic strategies. It acts as a potent nucleophile in addition reactions, such as Michael additions with unsaturated carbonyl compounds, and can be readily alkylated, acylated, or participate in thiol-ene click chemistry. Furthermore, the amino and carboxylic acid groups offer additional sites for derivatization, allowing L-Cysteine to be incorporated into peptides, serve as a chiral auxiliary, or be transformed into various heterocyclic compounds. This broad reactivity profile makes it an invaluable starting material for complex molecule synthesis.
For manufacturers involved in the production of pharmaceutical intermediates, agrochemicals, or specialty fine chemicals, sourcing high-quality L-Cysteine is paramount. The purity and consistency of this raw material directly influence reaction yields and the purity of the final product. NINGBO INNO PHARMCHEM CO.,LTD. specializes in supplying high-purity L-Cysteine, ensuring it meets the demanding specifications of organic synthesis. We are a trusted manufacturer and supplier, offering competitive pricing and reliable availability. If you need to buy L-Cysteine for your synthesis projects, our team is ready to provide you with the materials and support necessary for your success.
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.
