Fmoc-L-Met-OH

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Fmoc-L-Met-OH (CAS No. 71989-28-1) is a protected methionine derivative used in Fmoc-based solid-phase peptide synthesis. It provides sulfur-containing side chain integrity and is commonly applied in the preparation of GLP-1 peptides, including Semaglutide and Tirzepatide. Its chemical stability and 99% min purity ensure reliable incorporation during peptide elongation.

• CAS No.: 71989-28-1
• Molecular Formula: C₂₀H₂₁NO₄S
• Purity: 99% min

• Appearance White powder
• Molecular Weight 371.5 g/mol
• Density 1.3 ± 0.1 g/cm³
• Boiling Point 614.6 ± 55.0 °C at 760 mmHg
• Melting Point 121–123 °C (lit.)
• Flash Point 325.5 ± 31.5 °C
• Packaging 25 kg / fibre drum
• Customs Code 29309098
• Storage Conditions Keep sealed in a cool, dry place to preserve quality

• Product Name
  1. Fmoc-Met-OH;
  2. Fmoc-L-methionine;
  3. N-Fmoc-L-methionine; Fmoc-L-Met-OH;
  4. Methionine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-;
  5. (2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-methylsulfanylbutanoic acid
• Production Capacity 5 ton/month
• Applications Raw material for GLP-1 peptide synthesis, polypeptides, Semaglutide, and Tirzepatide