AAT Bioquest offers a focused selection of special amino acids designed for peptide synthesis and bioconjugation applications. This collection includes protected statine derivatives for synthesizing protease inhibitors, modified leucine analogs for creating novel peptides, and monoprotected diamines that serve as versatile linkers in bioconjugate chemistry.

Statine (3S,4S)-4-amino-3-hydroxy-6-methylheptanoic acid is a novel amino acid found in pepstatin, a potent low molecular weight inhibitor of acid proteases including pepsin, cathepsin D, and renin. Protected statine derivatives are essential building blocks for synthesizing pepstatin analogs and other peptidomimetic protease inhibitors used in enzyme research and drug development.

These specialized FMOC-protected amino acid derivatives enable the synthesis of peptides with unique structural features. FMOC-Dap(Boc)-OH provides an orthogonally protected diaminopropionic acid residue with a free 3-amino group that can be selectively modified to attach fluorescent tags, affinity labels, or other functional moieties. FMOC-4,5-dehydro-L-Leu-OH is an unsaturated leucine analog used to introduce conformational constraints or serve as a synthetic intermediate for novel peptide structures.

Monoprotected diamines are versatile bifunctional building blocks widely used in bioconjugate chemistry. These molecules contain two amino groups—one protected (BOC or FMOC) and one free—allowing for selective, stepwise coupling reactions. They are commonly employed as linkers or spacers in the synthesis of fluorescent oligonucleotide conjugates, peptide-drug conjugates, and other bioconjugate constructs where controlled spacing and attachment chemistry are required.