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We offer crude, >70%, >80%, >90%, >95%, and >98% purity grades by HPLC. Research-grade applications typically use >90%, while therapeutic or analytical reference standards require >95% or >98%. Each order ships with a Certificate of Analysis confirming purity and mass.

Standard turnaround is 5–10 business days for most research-grade peptides up to 30 residues at >95% purity. Longer sequences, difficult sequences, or GMP-grade orders may require 3–6 weeks. Rush synthesis options are available — contact us for availability.

Yes. We routinely incorporate D-amino acids, N-methylated residues, phosphorylated residues (pSer, pThr, pTyr), unnatural amino acids, and a range of fluorescent labels. Please include full modification details when submitting your sequence.

Lyophilized peptides should be stored at -20°C in a dry environment, away from light. Avoid repeated freeze-thaw cycles by aliquoting upon first reconstitution. Hydrophilic peptides are generally stable at -20°C for 12+ months; hydrophobic or cysteine-containing peptides may require -80°C for long-term storage.

Yes. We offer GMP synthesis services compliant with ICH Q7 guidelines, including full batch documentation, impurity profiling, residual solvent analysis, and support for FDA Drug Master File (DMF) submissions. Contact our team to discuss your regulatory requirements.

Sequences can be submitted using standard single-letter or three-letter amino acid codes. Modifications should be noted in brackets adjacent to the relevant residue (e.g., K[Biotin], pS for phosphoserine). Download our Custom Synthesis Request Form from the Order Forms section for a guided submission template.