IGF-1 LR3 1mg
IGF-1 LR3 (Long R3 Insulin-like Growth Factor 1) is an 83-amino acid analog of IGF-1 with reduced binding to IGF-binding proteins, resulting in significantly enhanced bioavailability and potency. The Arg3 substitution and N-terminal extension reduce IGFBP affinity by over 100-fold. Research focuses on cell proliferation, muscle hypertrophy, and metabolic effects.
Sequence
Long R3 IGF-1: 83-amino acid analog with Arg3 substitution and 13-aa N-terminal extension
Market avg: $79.99 — save 44%
Volume pricing
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Certificate of Analysis
Independently verified by Janoshik Analytical
Test ID
JAN-IGFLR3-2026-001
Purity
98.5%
Method
HPLC-MS
Batch
IGFLR3-2026-01A
Test Date
February 1, 2026
Identity
Confirmed
Storage Requirements
Lyophilized
-20°C, protect from light
Reconstituted
2-8°C, use within 7 days
Potent IGF-1 analog with reduced IGFBP binding. Store frozen. Handle with care.
Published Research
2 peer-reviewed studies
Long-R3-IGF-I: an analog of insulin-like growth factor-I with greatly enhanced potency
Francis GL, Ross M, Ballard FJ, et al. — Journal of Molecular Endocrinology, 1992
Original characterization of Long R3 IGF-1 showing enhanced potency due to reduced IGFBP binding.
IGF-I and its analogues — from basic research to clinical applications
Clemmons DR. — Molecular and Cellular Endocrinology, 1998
Review of IGF-1 biology and therapeutic analogs including LR3 variants.
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Research use only. All products are sold strictly for in-vitro research purposes only. Not for human consumption. Information provided references published research literature. No medical claims are made or implied.