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How to Store Research Compounds

Proper storage is the difference between a research compound that retains full potency and one that silently degrades into uselessness. Compounds are sensitive to temperature, light, moisture, and mechanical stress. This guide covers exactly how to store them at every stage, from arrival to the last draw.

The two states: lyophilised vs reconstituted

Compounds exist in two fundamentally different storage states, and the rules change significantly between them.

Frozen storage

Shelf life
12–24+ months
Light
Moderate sensitivity
Risk
Moisture absorption

Refrigerated

Shelf life
Up to 30 days
Light
High sensitivity
Risk
Hydrolysis, oxidation, bacteria
Property Lyophilised (powder) Reconstituted (liquid) Optimal temp −20°C (freezer) 2–8°C (refrigerator) Acceptable temp 2–8°C (fridge) for weeks Room temp for hours only Shelf life 12–24+ months (frozen) Up to 30 days (refrigerated) Light sensitivity Moderate High Freeze-thaw safe? Yes (already dry) No, avoid Main degradation risk Moisture absorption Hydrolysis, oxidation, bacteria

Storing lyophilised (unreconstituted) compounds

Lyophilised compounds are freeze-dried into a stable powder form. In this state they're relatively robust, but proper storage still matters.

Temperature

  • Best: −20°C (freezer) , gold standard. Most compounds retain >95% potency for 24+ months.
  • Acceptable: 2–8°C (fridge) , suitable if reconstituting within a few weeks. ~5% degradation per year.
  • Avoid room temperature , brief is fine (shipping, handling); prolonged accelerates degradation.

    • Light

    UV light causes photo-oxidation of tryptophan, tyrosine, and methionine residues. Keep vials in original packaging or an opaque container. A solid-door (not glass) freezer provides inherent light protection.

    Moisture

    The biggest enemy of lyophilised compounds. The whole point of lyophilisation is to remove water; if it's reabsorbed, degradation reactions restart. Keep crimped caps sealed; for opened vials use parafilm and a sealed container with desiccant packets.

    Long-term tips

  • Use a dedicated freezer bag or container, separate from food.
  • Label each vial with the date received and compound name.
  • Avoid the freezer door, temperature fluctuates.
  • Consider a small dedicated mini-freezer to minimise door-opening.

    • Shipping note: Compounds shipped at ambient temperature are fine. Lyophilised compounds are stable enough to survive 3–5 days in transit without significant degradation. Once they arrive, move them to the freezer or refrigerator promptly.

    Storing reconstituted compounds

    Once you add bacteriostatic water to a lyophilised compound, the clock starts ticking. The compound is now dissolved in solution and subject to hydrolysis (water breaking peptide bonds), oxidation, and potential bacterial contamination.

    Temperature: 2–8°C only

    Refrigerate immediately after reconstitution. Never freeze a reconstituted compound unless aliquoted into single-use portions, and never refreeze a thawed aliquot.

    Light protection

    Reconstituted compounds are more light-sensitive than their lyophilised form because dissolved peptides are more reactive. Store in a dark area of the fridge, inside the original box, or wrap in aluminium foil.

    Shelf life: 30 days

    Standard guidance: use within 30 days of reconstitution at 2–8°C in BAC water. Benzyl alcohol inhibits bacterial growth, but doesn't stop chemical degradation.

    Handling best practices

  • Always swab the stopper with alcohol before drawing, every time.
  • Smallest gauge needle possible (29–31G), minimises stopper hole and air ingress.
  • Keep upright in the fridge, reduces stopper-solution contact.
  • Write the reconstitution date on the vial.

    • Do not freeze reconstituted compounds. Freezing creates ice crystals that physically damage peptide structures and cause aggregation. If you must store long-term, aliquot into single-use portions before freezing, and never refreeze a thawed aliquot.

    Stability by compound class

    Some compounds are more stable than others in solution.

    Stability Examples Reconstituted shelf life High BPC-157, TB-500, GHK-Cu 28–35 days Moderate CJC-1295, Ipamorelin, Semaglutide 21–30 days Lower HGH, IGF-1 LR3, MGF 14–21 days

    Signs of degradation

    If you notice any of the following, discard the vial.

  • Cloudiness or turbidity in a previously clear solution, indicates aggregation or bacterial contamination.
  • Visible particles or floating matter.
  • Colour change , most peptide solutions are colourless. Yellowing or browning indicates oxidation.
  • Unusual smell , BAC water has a faint benzyl alcohol scent; foul odours suggest bacterial growth.
  • Gel formation at the bottom of the vial, some compounds aggregate into gels when degraded.

    • Quick reference card

    Lyophilised
    Freezer (−20°C), dark, dry, sealed → 24+ months
    Reconstituted
    Fridge (2–8°C), dark, BAC water, swab before each use → 30 days
    Never
    Leave reconstituted vials at room temp, freeze/thaw solutions, or expose to direct light.

    Lab-verified compounds, ready to store

    All New-U Research Compounds arrive lyophilised and independently verified by Janoshik & Freedom Diagnostics. 10-vial packs, shipped worldwide.

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