What should a peptide supplier’s technical data sheet include?

A useful research-peptide technical data sheet (TDS) is the document that lets a lab, a clinic buyer, or a biohacker verify identity, purity, and handling before use. Based on how suppliers and buyers actually compare products, a complete TDS should cover the following sections.

• Product identifiers: product name, peptide sequence (one-letter and three-letter), CAS number, molecular formula, molecular weight, synonym/common names, catalogue number, and batch or lot number. The lot number is essential because it links the sheet to the specific vial the buyer receives.
• Technical specifications: appearance (e.g., white lyophilized powder), declared purity (e.g., HPLC purity %), assay/content, counter-ion or salt form (acetate, TFA, etc.), peptide content vs. net weight, moisture or water content, and endotoxin or bioburden where relevant. State the test method beside each value.
• Analytical information: the actual chromatograms and spectra, not just numbers. Include the HPLC trace (column, mobile phase, gradient, wavelength), mass spectrometry result (ESI-MS or MALDI-TOF with observed vs. theoretical mass), and amino-acid analysis or sequencing where available. Reference the standard used and the date of testing.
• Limitations and intended use: a clear statement that the material is for research use only, not for human or veterinary use, not for diagnostic or therapeutic applications, and is not sterile unless stated. Note any known handling hazards, solubility limits, aggregation tendencies, or stability caveats.
• Storage and handling: recommended storage temperature (e.g., -20 °C, desiccated, protected from light), shipping conditions, shelf life and retest date, reconstitution guidance (solvent, concentration), and freeze-thaw advice.
• Quality and traceability: manufacturing site, quality system reference, certificate of analysis availability, and a contact for technical questions. For buyers sourcing internationally, the TDS should match the CoA and the batch actually shipped.

For buyers comparing suppliers, the TDS is a screening tool: a sheet that lists purity without a chromatogram, or a sequence without a lot number, is incomplete. Buyers who need help evaluating Chinese peptide API factories, research-peptide raw-material factories, lyophilized-powder vial factories, or international logistics providers can use our sourcing and comparison services to check whether a supplier's TDS and CoA are consistent and complete.

In short, a good TDS answers four questions: what exactly is this molecule, how pure is this batch and how was that measured, what can it not be used for, and how must it be stored and traced.