Tool
TB-500 (TB4) reconstitution calculator
TB-500 (TB4) ships as 5 mg, 10 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.
- Concentration
- 2.5 mg/mL
- 2.5 µg/µL · 2500 µg/mL
- Molar
- 0.504 mM
- 503.7 µM
Concentration = peptide mass ÷ diluent volume. Molarity = (mg/mL ÷ g/mol) × 1000. Research use only.
TB-500 (TB4) at common volumes
| Vial | 1 mL | 2 mL | 3 mL | 5 mL |
|---|---|---|---|---|
| 5 mg | 5 mg/mL1.01 mM | 2.5 mg/mL0.504 mM | 1.67 mg/mL0.336 mM | 1 mg/mL0.201 mM |
| 10 mg | 10 mg/mL2.01 mM | 5 mg/mL1.01 mM | 3.33 mg/mL0.672 mM | 2 mg/mL0.403 mM |
TB-500 (TB4) vial sizes we sell, at four diluent volumes. Molarity uses 4963.44 g/mol. Other volumes
What the numbers mean for TB-500 (TB4)
TB-500 (TB4) has a molecular weight of 4963.44 g/mol (C212H350N56O78S). So 5 mg is about 1.01 micromoles, whatever volume you dissolve it in. At 2.5 mg/mL that is 0.504 mM.
Each vial holds only powder, from 5 mg up to 10 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 TB-500 (TB4)?
+
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 TB-500 (TB4) 5 mg in 2 mL?
+
2.5 mg/mL, which is the same as 2.5 µg/µL. With a molecular weight of 4963.44 g/mol that is 0.504 mM.
Which TB-500 (TB4) vial sizes does the calculator cover?
+
The ones we sell: 5 mg, 10 mg. Pick a chip or type any other mass.
Where does the TB-500 (TB4) molecular weight come from?
+
The reference value on the product's Specifications tab, 4963.44 g/mol. The observed mass for the vial you receive is on its own lab report, which the QR code on the vial opens.
Related pages
- Buy TB-500 (TB4)5 mg, 10 mg. Free shipping, same-day dispatch, report on the vial.
- Where to buy a peptide blend in CanadaPeptide blends are sold in Canada as research chemicals. What a blend vial holds, how to reconstitute one, and how to check what is inside it.
- BPC-157 vs GHK-Cu and KPV: three peptides comparedBPC-157 is a 15-residue peptide at 1419.53 g/mol. GHK-Cu and KPV are tripeptides near 400. How the three differ and which blends hold them together.
- TB-500 vs KPV: two research peptides comparedTB-500 is a 4,963 g/mol thymosin beta-4 peptide, KPV a 353 g/mol tripeptide. How they differ, and how TB-500 and GHK-Cu end up in one vial.
- What does TB-500 stand for?TB-500 is named for thymosin beta-4. What the TB and the 500 mean, what TB-500 costs in Canada, and how to check a vial is the real molecule.
- BPC-157 in Canada: what's sold and how to check itBPC-157 is sold in Canada as a research chemical. What it is and isn't (not a steroid, not a GLP-1), the wolverine stack, and how to tell a tested vial.
- TB-500 reconstitution, storage and lab report guideTB-500's numbers in one place: mass, its relationship to thymosin beta-4, vial size, concentration table and what its report should show.
- TB-500 vs TB-500 fragment 17-23A 43-residue peptide and the seven residues inside it that do the actin binding. Masses, and why the fragment weighs a seventh as much.
- BPC-157 vs TB-500: what's the difference?BPC-157 and TB-500 are distinct research peptides studied in tissue-repair models. How they differ in sequence, size and research use, and how to verify each.
- Calculator for any peptideType your own mass and molecular weight.
- Reconstitution and storage guidesThe handling around the numbers.
Research use only. Not for human or animal consumption.