Peptides from 2 to 150 Amino Acids High quality peptides from mg to kg Purities from crude to 99% or higher An extensive list of labeling and modification Peptide library construction C13 and N15 isotope labeled peptide GMP standard peptides are available Extremely competitive price Timely delivery: normally 2-3 weeks, 3-4 weeks for long or difficult peptides Quality guaranteed by HPLC and Mass Spectroscopy data All peptides are shipped as lyophilized powder.