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Nexus verifies research-compound release batches through Janoshik Analytical, an independent third-party laboratory, then publishes the result as a public Certificate of Analysis you can inspect. Each verified record carries HPLC area-percent purity, mass-spectrometry identity, retention time, and full batch traceability — not a logo, the underlying data.
Janoshik Analytical is widely used across the research-compound community precisely because its reports are inspectable. Nexus normalizes each independently verified release batch into a public COA record built on the same structure.
Reverse-phase HPLC reports area-percent purity for the main peak under a stated method — the chromatographic measure of how much of the detector signal belongs to the target compound.
ESI-TOF mass spectrometry confirms the molecular identity by matching the observed mass against the expected mass for the named compound, reported with the mass error.
A Janoshik report carries sample information, method context, chromatogram axes in minutes and mAU, and a peak table with retention time, area, and area-percent — the same structure mirrored in every Nexus COA card.
Every independently verified Nexus release batch publishes a public COA. Open any record to inspect the lot, method, chromatogram, peak table, mass fields, and release threshold before you trust the badge. Lots awaiting their final third-party report are not listed here.
A purity number only means something when it is tied to a real lot, a recognizable method, and a report that can be inspected later. Independent verification removes the supplier from the role of grading their own work. New to reading these records? Start with the guide to reading a peptide certificate of analysis, then see the full verification methodology.
