Fmoc-Cys(Et)-OH

• CAT Number: L046316
• CAS Number: 200354-34-3
• Molecular Formula: C20H21NO4S
• Molecular Weight: 371.50
• Purity: ≥95%
• IUPAC Name: (2R)-3-ethylsulfanyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
• InChI: InChI=1S/C20H21NO4S/c1-2-26-12-18(19(22)23)21-20(24)25-11-17-15-9-5-3-7-13(15)14-8-4-6-10-16(14)17/h3-10,17-18H,2,11-12H2,1H3,(H,21,24)(H,22,23)/t18-/m0/s1
• InChIKey: OUXUHWHQQLGDQE-SFHVURJKSA-N
• SMILES: CCSCC(C(=O)O)NC(=O)OCC1C2=CC=CC=C2C3=CC=CC=C13

Fmoc-Cys(Et)-OH（Cat No.:L046316）is a protected form of cysteine, commonly used in peptide synthesis. The Fmoc (9-fluorenylmethyloxycarbonyl) group protects the amino terminus, while the ethyl group protects the thiol side chain, allowing for selective deprotection during peptide assembly. This derivative is essential in the synthesis of peptides where cysteine residues are involved, particularly in forming disulfide bonds or maintaining the integrity of the thiol group. Researchers rely on Fmoc-Cys(Et)-OH for creating complex peptides with precise structural and functional properties in drug development and biochemical research.