IGF-1 LR3, also called Long R3 IGF-1, is a modified IGF-1 analogue commonly described as an 83-amino-acid research protein with an N-terminal extension and an arginine substitution at position 3. Laboratory literature discusses it in relation to IGF-1 receptor signalling, IGF-binding-protein interaction models, PI3K/AKT and MAPK pathway research, and cell-culture proliferation assays.
Because IGF-1 LR3 is a larger protein-style research material rather than a small peptide vial, exact identity, mass, and formula should be verified against the supplier COA for each batch. The product entry keeps those details visible so batch documentation can remain the final analytical reference.
This product is supplied strictly for lawful research, laboratory, analytical, educational, or R&D purposes where permitted by applicable law. It is not intended for human or animal use.




