Identity & applicability

Analytical chemistrySupporting passage inspected

N-acetyl Semax amidate was characterized as Ac-MEHFPGP-NH2 in a laboratory LC–MS/MS study. The method distinguished the custom-synthesized reference compound from N-acetyl Semax and unmodified Semax. This establishes analytical characterization, not cognitive benefit, human pharmacokinetics or clinical safety.[1]

  • The study characterized reference material; it did not test a human treatment or establish the identity or quality of products sold by other suppliers.
  • This analytical identification study establishes what was found in the seized/marketed preparations it examined; it is separate from, and does not establish, human clinical effects for either unmodified Semax or N-acetyl Semax amidate.
Inspection history

Clinical review: not reviewed by a qualified clinician.

· Independently inspected the listed passages; replaced or qualified inherited assertions. No qualified clinical review has occurred.

· Refetched the original public PDF (same URL, HTTP 200) and reconfirmed the cited Methods/Table 1/Results passages verbatim; no change from the prior inspection. No qualified clinical review.

What remains unresolved

Editorial assessment

These notes describe the scope of this review. Linked PMIDs are audit identifiers; an identifier alone does not verify a claim.

Follow-up full-text searching located a primary LC–MS/MS study directly characterizing the exact custom-synthesized amidate reference standard. Published the narrow analytical identity finding, distinct from biological efficacy.

  • Human efficacy, route-specific pharmacokinetics, clinical safety and comparative potency/stability remain unverified; analytical characterization is not clinical evidence.
  • Other inherited assertions not supported by the published claim set remain unverified; no qualified clinician review has occurred.

This reference does not supply a dosing plan, monitoring timetable or recovery regimen. Discuss personal symptoms, medicines and laboratory results with a qualified clinician.

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References

  1. The occurrence of putative cognitive enhancing research peptides in seized pharmaceutical preparations: An incentive for controlling agencies to prepare for future encounters of the kind.

    2020-01-29. PMID:31667971 · DOI:10.1002/dta.2717 Full text inspected.

    Inspected location: Methods sections 2.1 and 2.6, PDF pp. 2-3; Table 1 N-acetyl semax amidate row, PDF p. 9; Results section 3.2, PDF p. 10

    Study context and inspection record

Source inspection and clinical review are separate. An abstract check is not a full-text review. The records above identify what was actually inspected and do not certify the complete literature.

Recorded verification attempts
  • peptide-pmid-31667971: Methods sections 2.1 and 2.6, PDF pp. 2–3; Table 1 N-acetyl semax amidate row, PDF p. 9; Results section 3.2, PDF p. 10
  • Initial Europe PMC exact-name searches on 2026-09-08 did not locate a directly supporting source.
  • Follow-up TITLE_ABS exact-name searches returned zero; TITLE_ABS Semax plus acetyl/acetylation/amidate/amidated/amidation returned two related-acetyl papers, neither verified as the doubly modified amidate.
  • Exact-sequence web search Ac-MEHFPGP-NH2 located PMID 31667971; full-text methods, Table 1 PDF p. 9 and Results section 3.2 were inspected.
  • ClinicalTrials.gov API exact queries N-acetyl semax amidate, N-acetyl semax and Ac-MEHFPGP-NH2 each returned zero on 2026-09-08. A registry search does not prove universal absence of clinical work.
  • FDA 2026 Semax briefing concerns the parent peptide; it is not used as proof of the amidated derivative.
  • Detailed follow-up attempts and applicability decisions: docs/audit/PEPTIDE-CITATION-FOLLOWUP.md.

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Related records in this class

Grouped under Peptides for navigation only. Shared class membership does not make findings, formulations or evidence interchangeable between records.

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