- CAS No.
- 1261289-04-6
- Molecular weight
- 380.2 g/mol (C16H11Cl2N3O2S)
Testing at this depth is rare. Here is the difference.
Five paid tests per lot costs real money, which is why this market usually skips them. Every claim in the Peptagon column is checkable on a live certificate.
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Most vendors | |
|---|---|---|
| HPLC purity Spec > 98%, achieved 99.0-99.99% | Every published lot | Often not stated |
| HPLC purity | HPLC separates a sample into its components, so the certificate can state exactly how much of the vial is the target compound. Our spec is above 98 percent; current published lots verify between 99.0 and 99.98 percent, and you can open the live certificate to check any lot yourself. |
|
| Identity confirmation | Every certificate | Rarely run |
| Identity confirmation | Purity alone cannot prove a vial holds the RIGHT compound, only how clean the contents are. Identity testing confirms the material matches the target molecule before a lot is released. It appears on every Peptagon certificate; in this market it is rarely run. |
|
| Measured quantity Actual mg in the vial, not nominal | Every certificate | Nominal fill only |
| Measured quantity | A label can say 50mg while the vial holds less. Peptagon certificates report the actual measured milligrams in the vial for the lot, not the nominal fill printed on the label. |
|
| Endotoxin (LAL) ≤ 5.0 EU/mL | Every published lot | Rarely tested |
| Endotoxin (LAL) | Endotoxins are bacterial residues that can survive filtration. The LAL assay screens every published lot against a limit of 5.0 EU/mL. Most research vendors skip it because it costs real money per lot. |
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| Sterility screening (PCR) | Every published lot | Rarely tested |
| Sterility screening (PCR) | PCR screening looks for microbial contamination in the finished vial. Every published Peptagon lot reports it as part of the five-test panel. |
|
| Certificate source | Independent US lab, ACL-001 | Often self-attested |
| Certificate source | A certificate is only as good as who signs it. Ours are issued and hosted by Accumark Labs (Lab ID ACL-001), an independent US lab. The record lives on the lab's site, so we cannot edit it after publication. |
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| Live digital COA Holographic record, lot-matched to your vial | Every published lot | Not offered |
| Live digital COA | Instead of a static PDF, every published lot links to a live holographic record hosted by the lab and matched to the lot code printed on your vial. Scan it before you buy, or after your vial arrives. |
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| Synthesis | USA | Often imported bulk |
| Synthesis | Peptagon compounds are synthesized in the USA, in cGMP-certified facilities where applicable, and released only after independent testing confirms the lot meets specification. |
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| US shipping Same-day before 4pm EST | Free, tracked | Paid, varies |
| US shipping | US shipping is fast, free and discreet, with no minimum. Orders placed before 4pm EST leave the same business day in plain packaging, with tracking emailed as soon as the label prints. |
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FAQ
Common questions
What gets tested on every lot?
Five results on every certificate: HPLC purity, identity, measured quantity, endotoxin (LAL) and sterility (PCR). Testing at that depth is rare in this market because it is expensive per lot. Current published lots verify between 99.0% and 99.99% purity.
How do I verify the certificate for my exact vial?
Open the certificate from the product page or catalog card, then match the lot code on the record to the lot printed on your vial. The record is hosted by Accumark Labs, the independent US lab that ran the tests, not by us.
Where are Peptagon compounds made?
Synthesized in the USA, in cGMP-certified facilities where applicable, and released only after independent testing confirms the lot meets specification.
How should vials be stored?
Follow the label: store at 68-77°F (20-25°C), protect from light, and refrigerate after first reconstitution.
How fast do orders ship, and what does shipping cost?
Orders placed before 4pm EST ship the same business day. US shipping is free with no minimum, and tracking is emailed when the label prints.
Are these products for human use?
No. Everything in the catalog is strictly for laboratory research use. Not for human or veterinary use.