Fmoc-Lys-OH

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Fmoc-Lys-OH (CAS No. 105047-45-8, C₂₁H₂₄N₂O₄) is a solid white compound widely used in peptide synthesis as a protected form of L-lysine. Its Fmoc group enables temporary protection of the α-amino function, making it compatible with standard solid-phase strategies. This derivative offers clean deprotection and excellent performance in sequences where side chain integrity is essential. It is commonly used in the production of GLP-1 analogs such as Semaglutide and Tirzepatide. Fmoc-Lys-OH is supplied in 25 kg fibre drums and should be stored at 2–8 °C, protected from light and under an inert atmosphere to maintain stability.

CAS No.: 105047-45-8
Molecular Formula: C₂₁H₂₄N₂O₄
Purity: 99% min

Appearance White solid
Molecular Weight 368.4 g/mol
Density 1.2 ± 0.1 g/cm³
Boiling Point 607.6 ± 55.0 °C at 760 mmHg
Melting Point N/A
Flash Point 321.3 ± 31.5 °C
Packaging 25 kg/fibre drum
Customs Code 2922509090
Storage Conditions Store in a dark, sealed container at 2–8 °C under inert atmosphere

Product Name
1. Fmoc-Lys-OH;
2. Fmoc-L-Lys-OH;
3. Fmoc-L-lysine;
4. (2S)-6-Amino-2-(9H-fluoren-9-ylmethoxycarbonylamino)hexanoic acid;
5. N-Fmoc-L-lysine;
6. (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-6-aminohexanoic acid;
7. (2S)-6-azaniumyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)hexanoate
Monthly Production Capacity 500 kg/month
Applications Side chain intermediate for Semaglutide and Tirzepatide synthesis

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