TOP 10 Brands Of Carbocysteine CAS 638-23-3 in China

Jun 06, 2026

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Carbocysteine CAS 638-23-3, is a mucolytic agent used for the management of respiratory tract disorders characterized by excessive and viscous mucus. It is a blocked thiol derivative of the amino acid L-cysteine.
Indications: Expectorants

 

1.Zhejiang Hengkang Pharmaceutical Co., Ltd.

Established in 2008, Zhejiang Hengkang Pharmaceutical Co., Ltd. is a dynamic pharmaceutical entity, spanning drug research, large-scale production, and global marketing. With an emphasis on high-end active pharmaceutical ingredient R&D, manufacturing, and sales, Hengkang is devoted to delivering superior pharmaceutical products and professional services.
Headquartered in Hangzhou, Hengkang established multiple factories, research and sales centers in Zhejiang, Shandong, and Henan. With facilities conforming to global API standards, along with professional R&D and marketing teams, Hengkang's operations span major pharmaceutical markets such as China, Europe, the CIS region, Japan, and South Korea. Hengkang has established long-term and stable relationships with nearly 70 countries overseas and hundreds of domestic enterprises.

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2. Pu Shan Industry (Shaanxi)
It specializes in the fine chemical field, supplying pharmaceutical-grade Carbocysteine with a purity of 99%. It follows the standard of refrigeration storage at 2-8℃ to ensure stability. The products comply with pharmacopoeia standards and can be used as raw materials for expectorant drugs. It supports small-scale samples and batch purchases, and the packaging can be customized. It has a complete quality inspection and after-sales system.


3. Guangdong Mingtong Biotechnology
It mainly deals in food and pharmaceutical chemical raw materials. It produces Carbocysteine (CAS 638-23-3) in large quantities, with a purity that meets standards. It mainly offers 1kg and 25kg mainstream packaging. The enterprise's quality management system is well-established. The products cover applications in medicine, feed additives, etc. The order placement is flexible, and it can handle domestic and foreign small-batch purchase orders.


4. Henan Kai Xin Biomedical
It focuses on the supply of biomedical raw materials. Its core products include Carbocysteine. It adopts purification processes to enhance the water solubility and stability of the products. The products are divided into two categories: pharmaceutical intermediates and reagent grade. Each batch undergoes liquid chromatography testing, and complete technical profiles are provided. The packaging can be customized, and it has a complete quality inspection and after-sales system.


5. Weifang Ruichen Biotechnology
Based on biotechnological synthesis technology, it specializes in the production of Carbocysteine and related amino acid derivatives. The purity is stable at over 99%. It optimizes the synthesis route to reduce production costs and is suitable for small-batch orders. The products pass multiple environmental protection and safety tests and can be used as intermediate products for expectorant drugs. The technical team provides application guidance.


6. Ningbo Zhuolun Pharmaceutical Technology
It focuses on pharmaceutical raw materials and intermediate products. It supplies Carbocysteine (CAS 638-23-3) and strictly follows the standards for pharmaceutical excipients of the National Drug Administration. The product has uniform particle size and no odor, and is suitable for oral formulation preparation. It supports customized packaging and can provide complete technical profiles. The logistics is fully protected, and it is compatible with both domestic and foreign small-batch purchase orders.


7. Shanghai Ke Wei Chemical Technology
It focuses on high-end chemical reagents and pharmaceutical reference substances, providing reagent-grade Carbocysteine with a purity of 98%-99%. It offers various small-sized packaging options. The products are designed for laboratory research, drug analysis, and quality inspection, and each batch comes with a complete set of testing documents. The storage is protected from light and moisture to ensure the long-term stability of the reagents.


8. Shenzhen Feis Biotechnology
It specializes in biomedical research reagents. It operates Carbocysteine standard products and intermediates, with precise purity and lower impurity content than industry standards. It provides services for research institutions and R&D departments of pharmaceutical companies, supporting milligram-level samples and kilogram-level batch supplies. The documents are complete, and it can meet the procurement needs of domestic and international research projects.


9. Chengdu Rui Er Pharmaceutical Technology
It integrates R&D, production, and sales. It mainly deals with respiratory system drug intermediates. Carbocysteine is produced using a continuous purification process, with strong batch consistency. It complies with domestic and international common quality control standards. The packaging adopts moisture-proof and sealed design. It can undertake small-scale outsourcing and customized production, with stable delivery schedules.


10. Beijing Kang Zhen Biotechnology
It focuses on biomedical raw materials and compound formulation raw materials. It supplies high-purity Carbocysteine (CAS 638-23-3) and is suitable for the production of expectorant drugs. The factory follows clean production norms and has full quality traceability. It provides standard packaging and customized packaging services. The communication response is rapid, and it is skilled at connecting long-term cooperation orders with small pharmaceutical enterprises.

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