LONG® R3 IGF-I solution human

recombinant, expressed in E. coli, liquid


Quality Level


expressed in E. coli



storage temp.


General description

LONG® R3 IGF-I is a recombinant analog of human insulin-like growth factor-I (IGF-I) that has been specifically engineered for the enhancement of cell culture performance. It is more biologically potent in vitro than either insulin or native IGF-I and has been shown to significantly increase recombinant protein production. It is ideal for both research and large-scale culture systems utilizing serum-free or low-level serum applications. LONG R3 IGF-I provides equivalent or better performance to recombinant insulin depending on the cell line and clone.
LONG R3 IGF-I is produced in an Escherichia coli expression system without the use of animal-derived components.


LONG R3 IGF-I has been used with numerous cell types including CHO, vaccine-producing cell lines, fibroblasts and stem cells. All cell types that have a growth response to insulin in cell culture have the potential to respond to LONG R3 IGF-I.
LONG® R3 IGF-I solution human has been used to induce myotube hypertrophy in cells.


For more information about LONG®R3 IGF-I, please visit the LONG®R3 IGF-I web page

Other Notes

Please contact your local SAFC sales representative to order.

Legal Information

Available in USA, Canada, and Europe. Please check with your local supplier regarding availability and restrictions in other countries.
LONG is a registered trademark of Repligen Sweden AB


NONH for all modes of transport

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Myostatin inhibits IGF-I-induced myotube hypertrophy through Akt.
Morissette MR
American Journal of Physiology. Cell Physiology, 297, C1124-C1124 (2009)

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