Research use only · Not for human or animal consumption
Quality control

Lab & testing

Every batch JUNI ships is independently tested before it leaves the facility. Below: the lab, the assays, and the document trail you receive with every order.

Testing partnerJanoshik AnalyticalIndependent third-party analytical lab. Reports are signed and include the operator's name, instrument, and run date.
Release standard≥ 99% HPLCIdentity confirmed by MS; endotoxin and sterility per assay. Batches that fail any release criterion are destroyed, not re-sold.

What we test for

  1. 01

    HPLC purity

    Reverse-phase HPLC with UV detection at 220 nm. Every batch must read ≥ 99% area-under-curve before release. The chromatogram ships with the CoA.

  2. 02

    Mass spectrometry identity

    Electrospray ionization MS to confirm the molecular weight matches the expected sequence within 0.5 Da. Identity failures kill the batch.

  3. 03

    Endotoxin (LAL)

    Limulus amebocyte lysate assay to <0.1 EU/mg. Required for any peptide that might enter an in-vitro cell-culture experiment.

  4. 04

    Sterility (USP <71>)

    Fluid-thioglycollate and soybean-casein digest media; 14-day incubation. Pass / fail recorded per batch.

  5. 05

    Bioburden / residual solvents

    Gas chromatography on the lyophilization mother liquor to confirm residual acetonitrile, TFA, and acetic acid are within USP limits.

Per-batch Certificate of Analysis

Every vial ships with a printed CoA in the box. The same CoA is downloadable from the product page (see "View batch CoA") and from your account once the order is dispatched. Sample CoA format below.

View sample CoA (BPC-157 batch) →

Questions about a specific batch

Email [email protected] with the batch number on the vial cap. Re-runs and CoA reissues turn around in one working day.