Tool

Selank reconstitution calculator

Selank ships as 5 mg, 10 mg, 30 mg vials of lyophilized powder. Pick the size, type the water volume, read the concentration. The molecular weight is already filled in, so the molar result is there too.

Selank in the vialmg

Water addedmL

Molecular weight (optional, for molarity)g/mol

Concentration: 2.5 mg/mL; 2.5 µg/µL · 2500 µg/mL
Molar: 3.33 mM; 3325 µM

Concentration = peptide mass ÷ diluent volume. Molarity = (mg/mL ÷ g/mol) × 1000. Research use only.

Selank at common volumes

Vial	1 mL	2 mL	3 mL	5 mL
5 mg	5 mg/mL6.65 mM	2.5 mg/mL3.33 mM	1.67 mg/mL2.22 mM	1 mg/mL1.33 mM
10 mg	10 mg/mL13.3 mM	5 mg/mL6.65 mM	3.33 mg/mL4.43 mM	2 mg/mL2.66 mM
30 mg	30 mg/mL39.9 mM	15 mg/mL20 mM	10 mg/mL13.3 mM	6 mg/mL7.98 mM

Selank vial sizes we sell, at four diluent volumes. Molarity uses 751.87 g/mol. Other volumes

What the numbers mean for Selank

Selank has a molecular weight of 751.87 g/mol (C33H57N11O9). So 5 mg is about 6.65 micromoles, whatever volume you dissolve it in. At 2.5 mg/mL that is 3.33 mM.

Sequence: TKPRPGP. The expected mass on the vial's mass-spec result is the molecular weight above; a match within a tenth of a percent is the identity check passing.

Each vial holds only powder, from 5 mg up to 30 mg, and no diluent. Add bacteriostatic water down the inside of the glass, swirl, and do not shake. The reconstitution guide covers the handling; this page covers the arithmetic.

Common questions

How much water do I add to a 5 mg vial of Selank?

Any volume that gives a concentration you can measure easily. 1 mL gives 5 mg/mL, 2 mL gives 2.5 mg/mL, 5 mL gives 1 mg/mL. The peptide amount stays 5 mg whatever you add.

What is the concentration of Selank 5 mg in 2 mL?

2.5 mg/mL, which is the same as 2.5 µg/µL. With a molecular weight of 751.87 g/mol that is 3.33 mM.

Which Selank vial sizes does the calculator cover?

The ones we sell: 5 mg, 10 mg, 30 mg. Pick a chip or type any other mass.

Where does the Selank molecular weight come from?

The reference value on the product's Specifications tab, 751.87 g/mol. The observed mass for the vial you receive is on its own lab report, which the QR code on the vial opens.

Research use only. Not for human or animal consumption.