Long R3 IGF-1 · 1 mg / vial- ·3 mL bacteriostatic water
- ·10 × 1 mL insulin syringes
- ·Alcohol swabs
IGF-1 LR3 1 mg
Modified IGF-1 — reduced IGFBP binding, ~83-residue analogue.
Long R3 IGF-1 — an engineered IGF-1 analogue with reduced affinity for IGF-binding proteins and extended plasma half-life. Widely used research reagent.
What the peptide is.
IGF-1 LR3 is a modified form of insulin-like growth factor 1 with an Arg3 substitution that reduces binding to IGF-binding proteins, and an N-terminal 13-residue extension derived from porcine GH. It is among the most commonly used IGF-1 analogues in muscle-biology and cell-culture research.
IGF-1R-mediated signalling → PI3K/Akt and MAPK pathways. Reduced IGFBP binding increases free-IGF availability in target tissues.
Reconstitution, storage, and handling.
Lab-technical guidance for the researcher handling the material. Not therapeutic dosing, not administration guidance — those are not within the scope of this supply.
- Recommended solvent
- Dilute acetic acid (0.1 N) or bacteriostatic water (depending on research context)
- Typical volume
- 1 mL
- IGF-1 analogues are sensitive to pH — dilute acetic acid is the reference solvent for research.
- Bac water is suitable for short-term reconstitution and most preclinical protocols.
- Lyophilised
- −20 °C, desiccated, protected from light. Stable at 15–25 °C for up to 30 days in transit.
- Reconstituted
- 2–8 °C, original vial, consumed within 4 weeks.
- Shelf life · sealed
- 24 months from date of manufacture when stored lyophilised at −20 °C.
- Shelf life · reconstituted
- Up to 4 weeks refrigerated.
- ▸Longer-chain peptide — gentle handling. Protect from agitation.
This lot, documented.
Every shipment is accompanied by a signed four-page analytical report including the HPLC chromatogram, ESI-MS spectrum, purity calculation, and sample handling chain-of-custody.
The report you will receive is specific to the lot dispatched to you. The display below is a current representative example.
04:22:11▸lot 26-04-A received ┈ 5.00 g04:22:40▸weight check ┈ PASS ±0.4 mg04:23:12▸sample → janoshik ┈ 50 mg04:23:12▸tracking #jnk-921833405:18:03▸HPLC result ┈ 99.24 %05:18:04▸MS obs 4729.42 Da ┈ PASS05:18:05▸coa.pdf signed ┈ attached05:18:06▸lot approved ┈ LIVE
REPORT ID JA-26-04-012
SUBJECT IGF-1 LR3 1 mg
DESIGNATION Long R3 IGF-1
LOT 26-04-A
METHOD RP-HPLC, ESI-MS
COLUMN C18, 250 x 4.6 mm, 5 um
MOBILE PHASE A: 0.1% TFA in H2O
B: 0.1% TFA in ACN
GRADIENT 5 -> 65% B over 20 min
FLOW RATE 1.0 mL/min
DETECTION UV 214 nm
INJECTION 20 uL @ 0.5 mg/mL
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PURITY (A%) 98.00
MASS EXP. 9111.28 Da
MASS OBS. 9111.30 Da
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CONCLUSION Identity CONFIRMED · Purity PASS
SIGNED BY J. Novak, MSc · Janoshik Analytical SVK
DATE 2026-04-11Research references for IGF-1 LR3 1 mg.
1 peer-reviewed publications. Links resolve to PubMed. DOIs are provided where available.
- [01]Francis GL, Upton FM, Ballard FJ, et al.
Insulin-like growth factors 1 and 2 in bovine colostrum — Long R3 IGF-1 characterization
Biochemical Journal · 1988
- Q.Why "LR3" in the name?
- A.Long Arg-3. "Long" refers to the 13-residue N-terminal extension; "Arg-3" is the amino-acid substitution at position 3 that reduces binding-protein affinity.
This peptide is supplied by Omega Grade for in vitro laboratory research use. It is not a drug, food, cosmetic, or dietary supplement. It is not approved by the FDA, EMA, MHRA, PMDA, or any other regulatory authority for any therapeutic indication.
No claim of therapeutic benefit is made or implied. The material is not intended for human or veterinary consumption, administration, or any form of self-experimentation. By purchasing, you acknowledge the researcher terms and accept full responsibility for local import compliance and all handling.
Often considered alongside.
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Approved GHRH analogue — stabilised long-acting GRF(1-44).
- Form
- Lyophilised kit
- Dose
- 10 mg / vial
- Purity
- ≥ 99.0%
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GHRH(1-29) analogue — the minimum fragment with full GH-releasing activity.
- Form
- Lyophilised kit
- Dose
- 10 mg / vial
- Purity
- ≥ 99.0%