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Siwei Development Group Ltd. is a trusted Chinese manufacturer and exporter of high-purity amino acids, APIs, intermediates, and specialty fine chemicals for pharmaceutical, nutraceutical, and industrial applications.
Siwei Development Group Ltd. is a reputed professional enterprise in China dedicated to the production and sales of amino acids and fine chemical products. With years of industry experience, we have established ourselves as a reliable supplier and exporter in the global chemical market.
Our meticulous efforts in research, development, and manufacturing ensure that we deliver high-purity, pharma-grade raw materials used across dietary supplements, functional foods, pharmaceuticals, and industrial applications.
We specialize in high-purity amino acids, fine chemicals, pharmaceutical intermediates, and active pharmaceutical ingredients (APIs) for global clients in pharmaceutical, nutraceutical, and research sectors.
CAS: 62062-65-1
Amino acid ester used in peptide synthesis and pharmaceutical intermediates.
CAS: 6066-82-6
Commonly used in bioconjugation and active ester formation.
CAS: 13726-69-7
Protected amino acid for peptide synthesis and drug development.
CAS: 82911-69-1
Fmoc-OSu used in solid-phase peptide synthesis.
CAS: 106-86-5
Cyclic ether compound used in organic synthesis.
CAS: 1129-46-0
Chiral building block for agrochemicals and pharmaceuticals.
CAS: 5355-16-8
Dihydrofolate reductase inhibitor used in veterinary medicine.
CAS: 1304-76-3
Used in pharmaceuticals, ceramics, and electronic materials.
CAS: 29617-66-1
Chiral synthon for herbicides and pharmaceuticals.
CAS: 89-77-0
Intermediate in dye and pharmaceutical synthesis.
CAS: 334618-23-4
Chiral amine used in CNS drug development.
CAS: 609799-22-6
Melatonin receptor agonist used in circadian rhythm disorders.
All products undergo rigorous quality control to meet pharmaceutical and research-grade specifications.
Trusted by clients worldwide with efficient logistics and documentation support.
Aligned with Chinese Pharmacopoeia and international quality standards.
The Chinese Pharmacopoeia 2023 edition completed preparation and officially implemented on July 1, 2023, enhancing quality standards for pharmaceutical raw materials.
Siwei will attend CPHI China in Shanghai from June 19–21, 2024. Visit us at Booth EA1801 to discuss partnership opportunities.
For inquiries, quotes, or technical support, please reach out through our official website.
0086-571-82881840
Rm2-2-503 Zhongdingyuan Xianghurenjia Wenyan Xiaoshan Hangzhou China
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