The questions below are the ones researchers ask most about storing, mixing and handling Cartalax. Each answer reflects the peptide’s sequence, Ala-Glu-Asp, and links to the fuller page where there is one.
How long does Cartalax last in the fridge after mixing?
Mixed with bacteriostatic water and kept at 2 to 8 °C in the dark, Cartalax lasts 8 to 12 weeks under Vistara Labs’ handling guidance, with quality slowly fading from around week 6 to 8. No published stability study covers Cartalax in bacteriostatic water, so the window is general peptide guidance. The full table is on how long Cartalax lasts.
How long does unmixed Cartalax powder last?
The sealed lyophilised vial is Cartalax at its most stable. It goes in the freezer at minus 20 °C for long holds and the fridge for near-term work, boxed and dry. No chemical supplier data sheet for Cartalax was available to us, so no powder figures are quoted. A few days at ambient temperature in transit do not harm it.
What is Cartalax?
Cartalax is the synthetic tripeptide Ala-Glu-Asp, also called the AED tripeptide or T-31, one of the short peptides developed from cartilage tissue extract. Its published research is cell culture and animal work on cartilage and connective tissue cells, summarised on the Cartalax research page.
Why is Cartalax more stable than most peptides?
Its three residues include none of the ones behind the commonest fast changes: no methionine or cysteine to oxidise, no tryptophan, no asparagine or glutamine to deamidate. Its aspartic acid is the last residue, so the usual aspartate ring reaction has no following residue to attack. The reasoning is on the Cartalax stability page.
What do you mix Cartalax with?
Bacteriostatic water, which is sterile water with 0.9% benzyl alcohol so a refrigerated vial can be accessed more than once. Cartalax is hydrophilic and carries a net negative charge at that pH, so it dissolves fully without acid or other solvents. The reasons are on the Cartalax solubility guide.
How much bacteriostatic water goes in a 20 mg Cartalax vial?
There is no single correct volume. With 2 mL a 20 mg vial gives 10 mg/mL; with 4 mL it gives 5 mg/mL. More water spreads the same amount of peptide through a larger volume, so write the chosen concentration on the vial. The tables and calculator are on the Cartalax reconstitution page.
Should Cartalax be dissolved in acetic acid?
No. Dilute acetic acid is used in labs for hydrophobic or basic peptides, but Cartalax is acidic and already fully soluble at the pH of bacteriostatic water. Acid would move the solution toward its calculated isoelectric point near pH 2.9, where it is least soluble, and acidic conditions favour hydrolysis next to an aspartate.
Why is my Cartalax cloudy after mixing?
Brief cloudiness that clears within 10 to 15 minutes is usually trapped air from adding water too fast or shaking. A peptide this soluble does not cloud on its own, so haze, particles or a tint that appear later point to contamination, warm storage or freezing, and the solution is discarded. More in why peptides gel or go cloudy.
Can you freeze mixed Cartalax?
Not a vial that will be opened again, because repeated freezing and thawing promotes aggregation in peptide solutions and warms the solution each time. Laboratories that need frozen solution divide it into single-use aliquots and thaw each one once. Sealed powder can be frozen without concern.
Is there a Cartalax nasal spray?
Not from Vistara Labs. Cartalax is supplied as a lyophilised 20 mg vial only, mixed with bacteriostatic water. The method is on the Cartalax handling page.
All products supplied by Vistara Labs are intended for laboratory research use only. They are not drugs, are not approved for human or veterinary use, and are not intended to diagnose, treat, cure or prevent any condition. Nothing on this page constitutes medical advice or guidance for use in humans.
