How to Read an Epitalon Certificate of Analysis
What KYIN Peptides' Epitalon certificate of analysis actually reports, and how to independently verify it.
What KYIN's Epitalon COA Reports
Every batch of KYIN's Epitalon is independently tested by Janoshik to over 99% purity, with a certificate of analysis available on request for every batch. The certificate reports an HPLC purity result and a mass spectrometry identity confirmation verifying the sample's molecular weight matches Epitalon's expected four-amino-acid sequence (Ala-Glu-Asp-Gly).
Why Short Sequences Still Warrant Identity Confirmation
Epitalon is one of the shortest peptides in KYIN's catalogue, which generally makes synthesis and purification more straightforward than for longer sequences. That said, mass spectrometry confirmation remains worthwhile even for short peptides, since it's the only way to distinguish Epitalon from a related but different four-amino-acid sequence, or to catch a single incorrect amino acid substitution that HPLC purity alone would not necessarily flag.
How to Verify Independently
Look up the batch number printed on your Epitalon certificate at Janoshik's public database, janoshik.com/verify, to confirm the result was actually issued by the lab rather than fabricated or altered. Our general How to Read a Certificate of Analysis guide explains the underlying HPLC and MS concepts in more depth.
Epitalon testing questions
What purity does KYIN Peptides' Epitalon meet?
KYIN Peptides' Epitalon is independently tested by Janoshik to over 99% purity, with a certificate of analysis available on request for every batch.
Does a short peptide like Epitalon still need identity confirmation?
Yes — even for a four-amino-acid peptide, mass spectrometry identity confirmation is the only reliable way to distinguish Epitalon from a related but different short sequence, or to catch a single incorrect amino acid substitution.
Interested in Epitalon?
See pricing, current batch purity, and the full certificate of analysis on the product page.