How to Reconstitute IGF-1 LR3: A Step-by-Step Guide
Reconstituting IGF-1 LR3 is not identical to reconstituting any other compound in this library. This is the one compound in this catalogue that genuinely requires an acidic solvent.
In plain English
This is the one compound here that genuinely needs an acidic liquid first. Dissolve it in dilute acetic acid or dilute hydrochloric acid, then dilute into whatever you are working in. Adding plain water often leaves visible undissolved material — that is expected chemistry, not a faulty vial.
What IGF-1 LR3 actually is
IGF-1 LR3 is a modified version of insulin-like growth factor 1, a natural growth signal. Two changes were made so that carrier proteins cannot grab and hold it. Crucially, it is a genuine folded protein rather than a simple chain — and that changes every handling rule.
Supplied for laboratory research use only — not for human or animal use.
Third-party tested by HPLC and LC-MS, ≥99% purity, with a Certificate of Analysis on every order. Ships across Canada.
Technical detail below
Diluent selection for IGF-1 LR3
This is the one compound in this catalogue that genuinely requires an acidic solvent. IGF-1 LR3 is a folded 83-residue protein with poor solubility at neutral pH and is conventionally dissolved first in dilute acetic acid or dilute HCl, then diluted into the working buffer. Attempting to dissolve it directly in plain water or PBS commonly produces incomplete dissolution or visible precipitate — this is expected chemistry, not a defective vial.
Common reconstitution reference
Dissolve first in dilute acetic acid or 10 mM HCl, then dilute. A 1 mg vial in 1 mL gives 1 mg/mL.
Open the IGF-1 LR3 calculatorMethod notes for this compound
- Dissolve in dilute acetic acid or dilute HCl FIRST; do not attempt direct dissolution in water or PBS.
- Add carrier protein (e.g. 0.1% BSA) for storage of dilute solutions to prevent adsorptive loss.
- Prepare single-use aliquots — freeze–thaw denaturation is irreversible.
- Do not vortex; agitation denatures folded proteins at the air–liquid interface.
What IGF-1 LR3 is studied for
The Arg3 substitution reduces binding-protein affinity, which is the entire design rationale.
Widely used in cell-culture research as a growth-factor supplement.
Studied in muscle-biology research models.
The canonical downstream pathway examined in IGF-1 receptor research.
Summarizes published preclinical literature. Provided for research reference only; not a claim of efficacy or a description of human use.
More IGF-1 LR3 reference
Lyophilized and reconstituted storage conditions, plus the practical working window.
Which solvents work, why, and what abnormal dissolution behaviour indicates.
The specific chemical routes by which this molecule breaks down, and how to limit each.
Which assays are informative for this molecule, and what to actually check on its COA.
Compound-specific bench practices, and the errors most often made with this molecule.
What to inspect on arrival, and which conditions actually warrant rejecting a vial.
Questions specific to this compound — structure, chemistry, and common misconceptions.
Reconstitution reference for other compounds
IGF-1 LR3 is supplied strictly as a research chemical for in-vitro laboratory and research use only. It is not intended for human or animal consumption, diagnostic, or therapeutic use. This page is educational laboratory-handling reference information — not medical advice, not usage guidance, and not a protocol.