Free calculator · No sign-up
Epithalon dosage calculator
Epithalon vials are commonly labelled 10 mg, 20 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.
Epithalon 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 |
|---|---|---|---|
| 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 |
| 20 mg | 0.5 mL | 40,000 mcg/mL | 40 mg/mL |
| 20 mg | 1 mL | 20,000 mcg/mL | 20 mg/mL |
| 20 mg | 1.5 mL | 13,333.33 mcg/mL | 13.333 mg/mL |
| 20 mg | 2 mL | 10,000 mcg/mL | 10 mg/mL |
| 20 mg | 2.5 mL | 8,000 mcg/mL | 8 mg/mL |
| 20 mg | 3 mL | 6,666.67 mcg/mL | 6.667 mg/mL |
| 20 mg | 5 mL | 4,000 mcg/mL | 4 mg/mL |
Epithalon physical-property record
Epitalon and Epithalon naming
PubChem records the tetrapeptide under the title Epitalon with formula C14H22N4O9 and molecular weight 390.35 g/mol. Cayman sells an Epitalon acetate product with a higher formula mass for the salt form. The spelling Epithalon is common on labels, so a record should retain both the printed spelling and the source identity instead of assuming every variant refers to the same chemical form. Sources: PubChem: Epitalon compound record · Cayman Chemical: Epitalon acetate specification.
PBS solubility for the acetate product
Cayman reports PBS solubility at 20 mg/mL and storage at -20 C for its Epitalon acetate material. The buffer name is part of the fact and should not be omitted when the number is cited. This calculator does not use the result to select liquid or concentration. It works from the measured volume entered for the actual vial. Sources: Cayman Chemical: Epitalon acetate specification.
A short peptide still needs a complete form record
Although Epitalon is smaller than many peptides on this site, salt form and naming still change the formula mass shown in technical documents. Keep the sequence designation, Epitalon or Epithalon spelling, acetate wording, catalog, lot and purity statement together. PubChem supports the free peptide identity, while Cayman supports one acetate reference product. Neither proves the contents of another vial. Sources: PubChem: Epitalon compound record · Cayman Chemical: Epitalon acetate specification.
No amount is derived from molecular size
The molecular weight is not a dosage input. The calculator converts labelled mass into concentration using measured liquid and converts a user-entered target into volume. It does not make a peptide more or less appropriate because its molecule is smaller, and it does not use the supplier's PBS solubility as a recipe. The page remains an arithmetic and physical-property reference only. Sources: PubChem: Epitalon compound record · Cayman Chemical: Epitalon 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 Epithalon · PubChem compound database · PubChem: Epitalon compound record · Cayman Chemical: Epitalon acetate specification. A database record does not authenticate a vial.
Frequently asked questions
How much bacteriostatic water for a 10 mg Epithalon vial?
This calculator does not choose a diluent volume. Enter the volume you decided to add to the 10 mg vial and it will show the resulting concentration. The page supplies arithmetic, not an instruction.
How much bacteriostatic water for a 20 mg Epithalon 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 20 mg label mass by that volume.
Does the Epithalon 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.
Free to download · No account required · Price shown before you enter anything personal
Last updated · Written by Aykut Yilmaz. All calculations run in your browser; no values are transmitted or stored.