Research Peptide
IGF-1 LR3
Long R3 insulin-like growth factor 1 for IGF-1 receptor binding research
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IGF-1 LR3 is a modified form of insulin-like growth factor 1 with an extended half-life, studied for IGF-1 receptor binding and downstream signaling in research models. Each vial contains ≥99% purity lyophilized powder, third-party HPLC verified.
Purity
≥99% (HPLC)
Form
Lyophilized Powder
Sequence
Modified IGF-1 Analogue
Storage
−20°C · Protect from light
Molecular Target
IGF-1 Receptor
SKU
GI1
For research and laboratory use only. Not for human consumption. All products are sold to qualified researchers and institutions only. Certificates of Analysis (COA) are available upon request.
The KitPeps Difference
Pricing
Fair Research Pricing
Pricing
10x Markup on COGS
Delivery
3-Day Delivery
Delivery
7–14 Days
Purity
≥99% HPLC Verified
Purity
Unverified or <95%
Testing
Third-Party COA Every Batch
Testing
In-house or None
Shipping
Worldwide
Shipping
US Only
Research Information
Mechanism of Action
IGF-1 LR3 is a modified insulin-like growth factor 1:
- IGF-1 receptor binding: High-affinity agonism with reduced IGFBP binding for enhanced bioavailability
- Extended half-life: N-terminal extension and Arg3 substitution reduce binding protein sequestration
- Anabolic signaling: Activates PI3K/Akt and MAPK/ERK pathways in research models
Published Research
- Francis GL, et al. (1992) — Long R3 IGF-1 characterization
- Molecular weight: ~9,111 Da
- 83 amino acids with N-terminal 13-aa extension + Arg3 substitution
- Reduced IGFBP binding increases free IGF-1R agonism
Reconstitution Protocol
For laboratory preparation:
- Reconstitute with bacteriostatic water or sterile water
- Add solvent slowly along vial wall
- Gently swirl — do not shake or vortex
- Store reconstituted solution at 2–8°C
- Use within 30 days of reconstitution
Quality Assurance
- Third-party HPLC purity testing on every batch
- Mass spectrometry identity confirmation
- Endotoxin testing (LAL method)
- Certificates of Analysis available on request
- Manufactured under strict laboratory conditions
Got Questions?
Frequently Asked Questions
All KitPeps products are research chemicals intended for laboratory and in-vitro research use only. They are sold exclusively to qualified researchers and institutions. Our products are not intended for human consumption.
Every product we offer is verified at ≥99% purity via independent third-party HPLC testing. Certificates of Analysis (COAs) are available upon request for every batch.
Most orders are delivered within 3 business days. We ship worldwide with discreet, secure packaging to ensure product integrity during transit.
Most suppliers apply a 10x+ markup on their cost of goods. We keep our margins fair so researchers can access high-purity compounds at prices that make sense. Same ≥99% purity, same third-party testing — just without the inflated price tag.
Refunds are available if your order has not yet shipped or if you received the wrong product. Once shipped, orders cannot be refunded. Contact us at support@kitpeps.com for any issues.
All research compounds are supplied as lyophilized (freeze-dried) powder in individually sealed vials. Each vial is labeled with compound name, concentration, lot number, and purity verification.
IGF-1 LR3 1mg
≥99% Purity · Lyophilized Powder