PT-141

Melanocortin agonist used in arousal-pathway research.

Melanocortin agonist used in arousal-pathway research
Purity ≥ 98.9% (HPLC)
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The why

PT-141, or bremelanotide, is a cyclic melanocortin receptor agonist. It is referenced in central nervous system arousal and MC4R pharmacology literature.

Key ingredients

PT-141 110 mg
Sterile lyophilized powder

Certificate of Analysis

Every lot, tested and documented.

Independent third-party analysis on every PT-141 lot by Vanguard Laboratory (A2LA accredited). Purity, quantity, identity, heavy metals, endotoxins and bioburden. The results below are pulled straight from the signed report.

Verified by Vanguard HPLC-UV/VIS ICP-MS USA-shipped

Vanguard Laboratory · Level 3 verified

PT-141

Open signed COA

Lot number

PT1.10.A

Laboratory ID

V260617-22003

Date reported

4/2/2026

Report number

V260617-22 003

Chromatographic purity

99.07%

Quantity per vial

11.49 mg

Endotoxins (LAL)

Pass - <5.00 EU/mg

Bioburden (USP 61)

Pass - No Growth Detected

Heavy metals (ICP-MS)

Not detected

Signed by

Dustin Newman, Laboratory Director

Values above are transcribed from the Vanguard Laboratory report for lot PT1.10.A. Heavy metals reported as ND (not detected) for arsenic, cadmium, lead and mercury. Open the signed PDF for chromatograms and the full analyte table.

What we test

Purity + identity
99.07%
HPLC-UV/VIS chromatographic purity against a reference standard.
Quantity
11.49 mg
Confirms the vial holds at least what the label says.
Heavy metals
Not detected
ICP-MS screen for arsenic, cadmium, lead and mercury.
Endotoxins + bioburden
Pass - <5.00 EU/mg
LAL endotoxin assay and USP 61 microbial count screening.