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Founded in 1845 as Watanabe Jurodo, our company started as a drug wholesaler. After changing our name to Watanabe Chemical Industries, we transitioned from manufacturing and selling general industrial chemicals and food additives to specializing in the production and sale of amino acid and peptide synthesis reagents. As the third category of pharmaceuticals following low molecular weight drugs and antibody drugs, medium molecular weight drugs are gaining attention, particularly peptide drugs, especially cyclic peptides, which are attracting significant expectations and interest. In light of these developments, our company offers approximately 3,000 peptide synthesis reagents, primarily focusing on Fmoc amino acids and Boc amino acids, and we are committed to supporting your drug discovery research. 【Business Activities】 ■ Manufacturing and sales of peptide synthesis reagents and amino acid derivatives *For more details, please refer to the PDF document or feel free to contact us.
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【Items for Handling】 ■ N-terminal protected amino acids ■ C-terminal protected amino acids ■ Special or non-natural amino acids ■ Resins for solid-phase synthesis and resins for liquid-phase synthesis ■ Reagents and raw materials ■ Contract synthesis *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Since we started manufacturing and selling Boc-amino acids in 1982, we have gradually expanded our product offerings to include Z-amino acids, Fmoc-amino acids, and resins for solid-phase synthesis. Currently, we also sell special amino acids, non-natural amino acids, coupling agents, coupling additives, and solvents for peptide synthesis, providing a wide range of reagents related to peptide synthesis. We actively engage in contract synthesis of amino acid derivatives (both natural and non-natural) that are not listed in our catalog, as well as bulk supply of resins for solid-phase synthesis, short-chain peptides, and various compounds.