Scientist in a lab coat, safety glasses and gloves reviewing an HPLC screen beside research vials at a bench, representing identity verification for in vitro research.
Mindful Research

Sourcing Semax Research Material: COA, Identity and Form

By: Mindful Research Team2 min read

Key takeaways

  • A semax COA should report HPLC purity and a mass-spec match to CAS 80714-61-0 / C37H51N9O10S.
  • Check whether the listing is the free peptide or the N-acetyl amidated form (~855.0 g/mol).
  • Match the COA mass to the correct form so identity is unambiguous.
  • Research-grade semax ships as a white lyophilized powder.
  • For in vitro research use only.

When sourcing semax as a research material, confirm identity and purity from a batch-specific COA reporting HPLC purity and a mass-spectrometry match to CAS 80714-61-0 / C37H51N9O10S (~813.9 g/mol), and check whether the listing is the free peptide or the N-acetyl amidated form.

What should a semax COA show?

A useful COA names the batch, the analytical method, a numeric HPLC purity figure, and a mass-spec identity result. For semax the measured mass should match the C37H51N9O10S formula; for the modified form it should match C39H54N10O10S. The general approach to reading these documents is in the purity, HPLC and COA guide.

Free peptide or modified form?

The single most important sourcing check for semax is which molecule the listing actually describes. The N-acetyl semax amidate page and the structure and identity reference give the two sets of identifiers; match the COA mass to the right one so the form is unambiguous.

What physical form does it ship in?

Research-grade semax is supplied as a white lyophilized powder, stored cold and kept sealed and dry until reconstitution in an aqueous-compatible reconstitution solution.

Where to source semax

Happy Peptides supplies semax as an in vitro research material with batch documentation; confirm the COA identity values above on receipt.

Related research guides

Research-use note

All materials discussed are supplied for in vitro laboratory research use only, and are not for human or animal use.

Frequently asked questions

What should a semax COA show?

A batch-specific COA reporting HPLC purity and a mass-spec identity match to CAS 80714-61-0 / C37H51N9O10S (~813.9 g/mol). Semax sourcing and COA

How do I know if a listing is semax or N-acetyl semax amidate?

Match the COA mass to the identifiers: ~813.9 g/mol (C37H51N9O10S) for the free peptide, ~855.0 g/mol (C39H54N10O10S) for the amidated form. N-acetyl semax amidate

What form does research semax ship in?

A white lyophilized powder, stored cold and kept sealed and dry until reconstitution.

What is semax?

A synthetic heptapeptide (MEHFPGP), CAS 80714-61-0, the ACTH(4-7) fragment with a Pro-Gly-Pro tail. Semax structure and identity

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