Catalog · Endocrine

IGF-1 LR3

Name: IGF-1 LR3 Research Peptide
Brand: Ethos Bio
Price: 129.99 USD
Availability: InStock

CAS 946870-92-4MW 9,117.7 g/mol≥99.0% Purity

A long-acting IGF-1 analog studied for IGF-1R signaling and cell proliferation.

Quantity per vial

Vials

$129.99

Free cold-chain shipping over $200
Signed COA included with every vial
Batch-pinned ordering for protocol continuity

Research Use Only. Sold for research and identification purposes only. Not intended for human dosing, injection, or ingestion.

Mass-Spec Verified

HPLC + LC-MS per batch at Janoshik.

99% Purity Threshold

Below-spec lots are destroyed, not sold.

Cold-Chain 2–8°C

Continuous transit temperature logging.

U.S. cGMP Compounded

Domestic manufacturing, lot traceability.

Mechanism of action

IGF-1 LR3 is an 83-amino-acid analog of insulin-like growth factor 1, modified with an Arg substitution at position 3 and an N-terminal extension that reduces binding to IGF-binding proteins, prolonging its activity in research systems.

It is studied as an agonist of the IGF-1 receptor, activating PI3K/Akt and MAPK signaling associated with cell proliferation and protein synthesis in culture models.

Full research overview, applications & FAQ →

Specifications

Compound name	IGF-1 LR3 (Long R3 IGF-1)
CAS number	946870-92-4
Sequence / Form	83-aa Long Arg3 IGF-1 analog
Molecular weight	9,117.7 g/mol
Classification	Endocrine research compound
Purity (HPLC)	≥ 99.0%
Identity verification	LC-MS (Janoshik Analytical)
Appearance	White lyophilized powder
Storage	Lyophilized: 2–8°C, sealed. Long-term: −20°C.
Vial sizes	1 mg · 2 mg · 5 mg
Synthesis method	Solid-phase peptide synthesis (SPPS)

Per-lot certificate of analysis

Every shipment of IGF-1 LR3 includes a signed Certificate of Analysis specific to the lot you receive, documenting HPLC purity, LC-MS identity confirmation, water content, and the cold-chain temperature log. Testing is performed by our independent partner, Janoshik Analytical.

View Certificate of Analysis →

Research Use Only — required disclosure

IGF-1 LR3, like all Ethos Bio products, is sold strictly for in-vitro and laboratory research use only. It is not a drug, food, cosmetic, or supplement; not intended for human or veterinary consumption; and not intended for the diagnosis, treatment, cure, mitigation, or prevention of any disease.

Sale is restricted to qualified researchers and institutions, aged 21+. By placing an order you certify the compound will be used solely for laboratory research consistent with 21 CFR § 201.128.