Side-by-side comparison

Melanotan-1 vs Melanotan-2

Both melanocortin agonists, very different receptor selectivities. Sequence, mass and dosing options compared.

α-MSH analogue — melanogenesis research.

Cyclic α-MSH analogue — pigmentation research.

Specifications compared

Field	Melanotan-1	Melanotan-2
Category	Cosmetic & Skin	Cosmetic & Skin
Sequence	Afamelanotide (α-MSH analogue, 13 aa)	Cyclic α-MSH analogue
CAS	75921-69-6	121062-08-6
Molecular weight	1646.9 g/mol	1024.2 g/mol
Purity	≥ 99 %	≥ 99 %
Doses available	10 mg	10 mg
Storage	Lyophilised: store at –20 °C, protected from light, up to 24 months. Reconstituted: keep at 2–8 °C and use within 14 days.	Lyophilised: store at –20 °C, protected from light, up to 24 months. Reconstituted: keep at 2–8 °C and use within 14 days.
Reconstitution	Reconstitute with bacteriostatic water (1–3 ml depending on the working concentration). Add slowly down the vial wall, then swirl gently — do not shake or vortex.	Reconstitute with bacteriostatic water (1–3 ml depending on the working concentration). Add slowly down the vial wall, then swirl gently — do not shake or vortex.

Melanotan-1

Melanotan-2

For in-vitro research use only. This page compares product specifications and is not medical, clinical or dosing advice.