PT-141 vs Melanotan II
These two are close relatives — both melanocortin-receptor agonists — and the comparison comes down to a single question: which receptors each one favours. That selectivity is what places them in different parts of the range.
receptor selectivity is the axis
PT-141 (bremelanotide) is studied with a focus on the MC4 receptor — the melanocortin target most associated with arousal-pathway research. Melanotan II is broad: it engages MC4 and the MC1 receptor (associated with pigmentation). Same family, different receptor emphasis.
why they sit in different ranges
That MC1 activity is why Melanotan II sits in the skin & aesthetics range (pigmentation research), while the MC4-weighted PT-141 anchors the vitality & libido range. Neither is "stronger" — they favour different receptors.
how to think about the choice
The research question decides it: an MC4-focused profile points to PT-141; a broader melanocortin profile that also touches MC1 points to Melanotan II. They're related tools for adjacent questions, not competing versions of one compound.
verifying identity and purity
Both PT-141 and Melanotan II ship with an independent, batch-specific certificate of analysis reporting identity and HPLC purity — see how to read a COA.
research use only
Both compounds are supplied strictly for in-vitro and laboratory research use only — not medicines, not for human or veterinary consumption. Nothing here is dosing, medical or treatment guidance.
the research pens
Pre-filled, batch-numbered and independently assayed. Save one to your list and we'll email you the moment it's available in your country.
