Every Peptide Spot batch is verified using high-performance liquid chromatography (HPLC) and electrospray ionization mass spectrometry (ESI-MS). Search our real-time Certificate of Analysis database below.
How every research vial is synthesized, analyzed, and documented before release.
Synthesized via automated solid-phase peptide synthesis (SPPS) using high-grade Fmoc amino acid monomers.
Preparative and analytical C18 RP-HPLC purification ensures all batches achieve >99% purity profile.
ESI-MS / MALDI-TOF confirms exact molecular weight matching the calculated peptide mass within ±0.5 Da.
Batch-specific analytical data is cataloged, verified by QA analysts, and attached to every shipped order.
Need historical batch data, high-resolution raw chromatogram CSV files, or institutional QA documentation? Our analytical team is available.
Contact Quality AssuranceYes. Every shipment includes the batch-specific COA matching the lot number printed on your lyophilized vials.
We maintain a strict minimum standard of ≥98% HPLC purity, with our average catalog batch testing between 99.7% and 99.9% purity.
The HPLC chromatogram graphs optical absorbance (mAU) over time. A single sharp peak represents the purified peptide analyte, while the baseline integration demonstrates the absence of residual truncated peptide fragments.
Electrospray Ionization Mass Spectrometry (ESI-MS) measures the mass-to-charge ratio (m/z) of the peptide. Comparing observed mass against calculated molecular weight confirms that the full-length amino acid sequence is synthesized correctly.