
Research Peptides
IGF-1 LR3
Long R3 Insulin-like Growth Factor
83-residue recombinant IGF-1 analog (Arg3 substitution with a 13-residue N-terminal extension) with reduced IGF-binding-protein affinity, used as a cell-culture growth-factor supplement and in IGF-1R signaling assays.
- IGF-1R signaling
- Cell-culture supplement
Supplied as lyophilized powder · Solvent not included · Lot-matched COA enclosed
$79
1 mg vial · $79.00/mg
- Same-day dispatch on orders placed by 2 PM EST
- Free shipping on orders $200+
- Lot-matched COA included in every box
For in-vitro laboratory research use only. Not for human or veterinary use, or for diagnostic or therapeutic purposes. Sold to qualified laboratories and research organizations; by purchasing you confirm you are 21+ and ordering on behalf of a research organization.
Technical details
- Form
- Lyophilized powder
- Appearance
- White to off-white lyophilized powder
- Molecular Weight
- ≈9.1 kDa
- Purity
- ≥99% by RP-HPLC (214 nm)
- Identity
- ESI-MS against theoretical mass, lot-matched
- Solubility
- Soluble in water; see COA for lot-specific notes
- Storage & Stability
- Lyophilized: −20 °C, protected from light and moisture. Solution stability: 30 days at 2–8 °C.
- Documentation
- Lot-matched COA in every order · SDS available on request
- Current lot
- Lot-matched COA ships with every order · look one up at /coa
The label on your vial

For in-vitro laboratory research use only. Not for human or veterinary use, or for diagnostic or therapeutic purposes. Supplied to qualified laboratories and research organizations. Nothing on this page describes effects in humans or animals.
- Independently verified by an accredited US analytical lab
- Sealed, light-protected vial with tamper-evident cap
- Insulated, plain outer packaging with COA enclosed



