
- Independent lab tested
- ≥99.0% purity
- Research use only
IGF-1 LR3
Long-R3 analog of insulin-like growth factor 1, widely used as a cell-culture reagent.
Lab data
- CAS
- 946870-92-4
- Formula
- Recombinant protein (83 residues)
- Mol. weight
- ≈9,111 g/mol
- Purity
- ≥99.0% (HPLC)
- Current lot
- ATL-IGF-2610A
- Form
- Lyophilized powder
Certificates of Analysis
One COA per lot. The lot number on your vial matches the report below.
| Lot | Purity | Tested | Laboratory | Report |
|---|---|---|---|---|
| ATL-IGF-2610A | ≥99.0% (HPLC) | — | Independent third-party laboratory | Posting soon · request |
Research overview
IGF-1 LR3 is an 83-amino-acid analog of human IGF-1 with a glutamic acid-to-arginine substitution at position 3 and a 13-residue N-terminal extension. Both changes reduce binding to IGF-binding proteins in vitro, which is why it is a common supplement in serum-free cell-culture media research.
Sequence
83-residue analog of human IGF-1 with an Arg3 substitution and 13-residue N-terminal extension
Storage and handling
Lyophilized powder. Store at -20 °C for long-term stability; 2–8 °C short term. Protect from light and moisture. Allow the sealed vial to reach room temperature before opening to limit condensation.
Atlas supplies research materials and cannot advise on use. For purity data, storage, shipping or order questions, contact us.
Research use only. For Research Use Only. Not for human or veterinary use. Not for diagnostic or therapeutic use. Not a drug, food, cosmetic or dietary supplement. Not for resale to consumers.










