Peptides

The sequence is the core molecular specification. When submitting an inquiry or custom request, please provide the complete amino acid sequence. If protecting groups, N-terminal acetylation, C-terminal amidation, or other terminal configurations are involved, please specify them as well. Incomplete sequences directly lead to molecular structure discrepancies, analytical variances, and quotation delays.

Purity should precisely match your downstream applications. Basic research screening, in vitro assay development, and downstream formulation work have varying purity requirements. Blindly pursuing ultra-high purity may introduce unnecessary costs; the appropriate specification depends on the analytical method and project stage.

Molecular weight is not only used to verify the expected molecular structure but is also critical for:

• Accurate concentration calculations and solution preparation
• Mass spectrometry (MS) structural confirmation
• Analytical testing and formulation development

Complex projects often require specialized structural modifications. Potential custom modifications include:

• Terminal modifications (e.g., acetylation, amidation)
• Lipidation (to enhance membrane permeability or half-life)
• Fluorescent labeling and molecular conjugation
• Cyclization and incorporation of non-standard amino acids