AnaSpec is pleased to announce the launch of the first commercially available Amino Acid Pre-loaded Hydrazide Resins. Native Chemical Ligation (NCL) has been one of the most used bioconjugation methodologies for synthesis of macromolecules. NCL requires a peptide thioester and another peptide moiety containing a free cysteine at the N-terminus. However, peptide thioester synthesis is technically challenging due to its [PR.com]