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Selank dosage calculator
Selank vials are commonly labelled 5 mg, 10 mg. This calculator divides the vial mass by the diluent volume you enter to show concentration, then converts your own target amount into millilitres and syringe units. It states no dose, chooses no amount and stores nothing.
This page is a calculation tool. The amounts you enter are values you decided; this page states no dose and gives no medical advice.
Selank vial concentration grid
This table answers one arithmetic question: what concentration results when a labelled vial mass is divided by a measured diluent volume? It does not select either value.
| Vial mass | Diluent | Concentration | Same concentration |
|---|---|---|---|
| 5 mg | 0.5 mL | 10,000 mcg/mL | 10 mg/mL |
| 5 mg | 1 mL | 5,000 mcg/mL | 5 mg/mL |
| 5 mg | 1.5 mL | 3,333.33 mcg/mL | 3.333 mg/mL |
| 5 mg | 2 mL | 2,500 mcg/mL | 2.5 mg/mL |
| 5 mg | 2.5 mL | 2,000 mcg/mL | 2 mg/mL |
| 5 mg | 3 mL | 1,666.67 mcg/mL | 1.667 mg/mL |
| 5 mg | 5 mL | 1,000 mcg/mL | 1 mg/mL |
| 10 mg | 0.5 mL | 20,000 mcg/mL | 20 mg/mL |
| 10 mg | 1 mL | 10,000 mcg/mL | 10 mg/mL |
| 10 mg | 1.5 mL | 6,666.67 mcg/mL | 6.667 mg/mL |
| 10 mg | 2 mL | 5,000 mcg/mL | 5 mg/mL |
| 10 mg | 2.5 mL | 4,000 mcg/mL | 4 mg/mL |
| 10 mg | 3 mL | 3,333.33 mcg/mL | 3.333 mg/mL |
| 10 mg | 5 mL | 2,000 mcg/mL | 2 mg/mL |
Selank physical-property record
Selank free peptide and acetate comparison
PubChem lists Selank with formula C33H57N11O9 and molecular weight 751.9 g/mol. Cayman lists its acetate catalog material at 810.0 g/mol. These values refer to different chemical-form conventions, not two interchangeable measurements of one unspecified powder. The salt form should therefore appear in the vial record and in any molar calculation derived from a certificate. Sources: PubChem: Selank compound record · Cayman Chemical: Selank acetate specification.
Supplier solubility and frozen storage
Cayman reports water solubility at 25 mg/mL for its Selank acetate product and specifies storage at -20 C. The result belongs to that reference item and does not choose a preparation volume for a different vial. This page leaves volume under user control and uses the source only to document a physical property of the named supplier material. Sources: Cayman Chemical: Selank acetate specification.
Why the salt difference should remain visible
If a certificate reports peptide content as a free-base equivalent, the labelled gross mass and the molecular amount may use different bases. Removing acetate wording can make later reconciliation impossible. A complete Selank record preserves the exact product name, sequence or catalog, lot, purity statement, mass basis and measured liquid volume. The database and technical sheet then function as comparison records rather than substitutes for the certificate. Sources: PubChem: Selank compound record · Cayman Chemical: Selank acetate specification.
Physical facts stay separate from amount selection
The calculator never turns the 25 mg/mL supplier solubility result into a selected concentration. It also does not use the molecular-weight value to propose an amount. Its output is limited to deterministic conversion of the user's own mass and volume inputs. The cited sources explain identity, form and handling for reference material; they provide no dose, schedule, progression or medical instruction. Sources: PubChem: Selank compound record · Cayman Chemical: Selank acetate specification.
How to use the calculator
- Read the total mass from your own vial label and enter it in milligrams.
- Enter the diluent volume you actually measured, not an intended or remembered value.
- Enter your own target amount and select the calibration printed on your syringe barrel.
- Record the concentration with the result so the syringe-unit figure remains interpretable later.
Source and identity record
Use the compound reference page and these external database searches when checking identity: PubMed literature search for Selank · PubChem: Selank compound record · Cayman Chemical: Selank acetate specification. A database record does not authenticate a vial.
Frequently asked questions
How much bacteriostatic water for a 5 mg Selank vial?
This calculator does not choose a diluent volume. Enter the volume you decided to add to the 5 mg vial and it will show the resulting concentration. The page supplies arithmetic, not an instruction.
How much bacteriostatic water for a 10 mg Selank vial?
There is no universal volume selected by this page. Use the value you measured or were instructed to use; the calculator then divides the 10 mg label mass by that volume.
Does the Selank calculator recommend a dose?
No. The target amount is always entered by the user. The tool provides no starting amount, maximum amount, progression, frequency or schedule.
Why does the syringe calibration matter?
A syringe unit is a volume marking. U-100, U-50 and U-40 barrels use different numbers of units per millilitre, so the same solution volume produces different markings.
Related pages
Stop recalculating this every time
PepCycle stores each vial once — mass, diluent volume, concentration — and converts automatically for every entry after that, in both directions, including entries you backdate.
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Last updated · Written by Aykut Yilmaz. All calculations run in your browser; no values are transmitted or stored.