What Melanotan 2 Is

Melanotan 2 is a lab-made copy of a natural hormone the body uses to control pigment. It’s built to be more stable and far longer-lasting than the natural version, which makes it a useful tool for studying how pigment is made.

The body produces a hormone called alpha-MSH that signals pigment cells to make melanin. The problem for researchers is that natural alpha-MSH breaks down in seconds. Melanotan 2 is a synthetic version designed to stay active far longer — around half an hour — so the pathway can actually be studied.

It was first created at the University of Arizona in the 1980s specifically as a research compound for investigating melanogenesis (how the body produces pigment) and related UV pathways. It has been a reference compound in this area ever since.

Melanotan 2 acts on several melanocortin receptors at once. Its strongest effect is at MC1R, the receptor that drives pigment production, but it also touches MC4R, which is why it shows up in separate research areas around appetite and arousal.

Melanotan 2 vs Melanotan 1 vs PT-141

Melanotan 2 sits in the melanocortin family alongside Melanotan 1 and PT-141. They overlap, but each is studied for a different reason — mainly which receptors they prefer.

Melanotan 1 is the most pigment-selective of the three. PT-141 leans toward the MC4R arousal pathway and is studied for that. Melanotan 2 sits in the middle — it’s the broadest of the three, which is exactly why it’s the most commonly used research tool for the melanocortin system as a whole.

What the Research Looks At

Pigment production. The main focus. Researchers use Melanotan 2 to study how switching on MC1R drives melanin synthesis, because its longer half-life makes the pathway far easier to observe than with natural alpha-MSH.

The MC4R pathway. Because Melanotan 2 also activates MC4R, it appears in separate research on appetite signalling and arousal — the same receptor that led to the development of PT-141.

Receptor behaviour. A broad-acting melanocortin agonist is a useful baseline for comparing newer, more selective analogues, so Melanotan 2 is often the reference compound other peptides are measured against.

Why Source Melanotan 2 Locally in Thailand

Buying Melanotan 2 from overseas means customs delays, long transit and temperature swings that can quietly degrade a peptide before it arrives. Sourcing locally removes all three.

Bangkok Peptides keeps stock in Bangkok, ships from Bangkok, and delivers across Thailand on tracked services — so you get your order in days, not weeks, with a handling chain you can actually verify.

Delivery Across Thailand

We ship Melanotan 2 nationwide by tracked courier. Most orders qualify for same-day or next-working-day dispatch from Bangkok, with arrival depending on where you are.

Reconstitution & Handling

Melanotan 2 arrives as a freeze-dried (lyophilised) powder in a sealed sterile vial. Before any research use it needs mixing with bacteriostatic water. Standard lab handling applies.

Add the water slowly down the inside wall of the vial — not straight onto the powder — then swirl gently until it dissolves. Don’t shake. The solution should look clear.

Keep the sealed vial cool, dry and out of direct light before mixing. Once mixed, store it in the fridge at 2–8°C, which matters in Thailand’s heat. Avoid repeated freeze–thaw cycles. Sealed vials keep for up to 24 months when stored properly.

Frequently Asked Questions