Amino Acid Azides/Alkynes

Peptide synthesis using natural and non-natural amino acids is a powerful tool in the development of therapeutics and understanding biological chemistry. Sigma-Aldrich offers a variety of Fmoc and Boc protected azido amino acids for your peptide or amino acid based chemical ligation needs, such as azide-alkyne or Huisgen cycloaddition reactions and Staudinger ligations.

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690651 (S)-(−)-2-Azido-6-(Boc-amino)hexanoic acid (dicyclohexylammonium) salt ≥97% C11H20N4O4 · C12H23N
712175 (S)-2-Azido-3-(4-tert-butoxyphenyl)propionic acid cyclohexylammonium salt ≥98% (CE) C13H17N3O3 · C6H13N
712779 (S)-2-Azido-3-tert-butoxypropionic acid cyclohexylammonium salt ≥98% (CE) C7H13N3O3 ·C6H13N
714291 (S)-5-Azido-2-(Fmoc-amino)pentanoic acid ≥97.0% (HPLC) C20H20N4O4
714259 (S)-2 Azido-3-(3-indolyl)propionic acid cyclohexylammonium salt ≥98% (HPLC) C11H10N4O2 · C6H13N
714275 (S)-2-Azido-3-methylbutyric acid cyclohexylammonium salt ≥98% (CE) C5H9N3O2·C6H13N
714267 (S)-2-Azido-4-(methylthio)butanoic acid cyclohexylammonium salt ≥98% (CE) C5H9N3O2S · C6H13N
690767 (S)-2-Azido-3-phenylpropionic acid (dicyclohexylammonium) salt ≥98% C9H9N3O2 · C12H23N
714283 (S)-2-Azido-propionic acid cyclohexylammonium salt ≥98% (CE) C3H5N3O2 · C6H13N
714232 (R)-2-(Boc-amino)-5-hexynoic acid ≥96% (HPLC) C11H17NO4
714240 (S)-2-(Boc-amino)-5-hexynoic acid ≥96% (HPLC) C11H17NO4
712612 Boc-3-azido-Ala-OH (dicyclohexylammonium) salt ≥97% (CE) C20H37N5O4
712620 N-Boc-4-azido-L-homoalanine (dicyclohexylammonium) salt ≥97% (CE) C21H39N5O4
712647 N-Boc-6-azido-L-norleucine (dicyclohexylammonium) salt ≥98.0% (CE) C23H43N5O4
712639 N-Boc-5-azido-L-norvaline (dicyclohexylammonium) salt ≥98.0% (CE) C22H41N5O4
712248 Boc-4-azido-Phe-OH ≥95% (HPLC) C14H18N4O4
712221 Boc-propargyl-Gly-OH ≥98.0% (HPLC) C10H15NO4
711977 Boc-(R)-4-(2-propynyl)-L-proline ≥96% C13H19NO4
690554 (S)-5-tert-Butyl hydrogen 2-azidoglutarate (dicyclohexylammonium) salt 99% C9H15N3O4 · C12H23N
690430 (S)-(−)-4-tert-Butyl hydrogen 2-azidosuccinate (dicyclohexylammonium) salt ≥98.0% C8H13N3O4 · C12H23N
774995 N2-[(1,1-Dimethylethoxy)carbonyl]-N6-[(2-propynyloxy)carbonyl]-L-lysine 90% C15H24N2O6
714151 Fmoc-β-azido-Ala-OH ≥98.0% (HPLC) C18H16N4O4
F5312 Fmoc-(R)-propargyl-Ala-OH C21H19NO4
F5437 Fmoc-(S)-propargyl-Ala-OH C21H19NO4