IGF-1 LR3 1mg
LatestLOT IGF0002
99.03%HPLC purity · meets spec
- Labeled
- 1mg
- Measured
- 1.03mg
- Identity
- Confirmed
- Heavy metals
- Not Detected
- Sterility
- No Growth
- Endotoxin
- 0.097 EU/mL
- Tested
- Jul 30, 2026
8 assays passed · ISO/IEC 17025 accredited
Growth Factor Analog Peptide
IGF-1 LR3
Long R3 IGF-1LR3-IGF-1Long Arginine 3-IGF-1CAS: 143045-27-6
An 83-amino acid synthetic analog of human insulin-like growth factor 1 with reduced binding protein affinity and extended half-life, studied for anabolic and tissue growth effects in preclinical studies. Premium Direct-Supply Peptide.
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From$209
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Verified Test Results
Every batch, independently verified.
Each batch is analyzed by an ISO/IEC 17025 accredited third-party laboratory. The report below reflects the identity, purity and full-panel specification data reported by the lab.
ILSILS LaboratoriesCertificate of Analysis≥99%Purity by HPLC
ISO 17025 Accredited8× Tested
ParameterResultMethodSpecification
Peptide Purity (HPLC)99.03%HPLC>= 95%
Net Peptide Content1.03mgHPLCReport
Identity (HPLC)ConfirmedHPLCMeets spec
AppearanceGoodVisualMeets spec
Fentanyl ScreenNot DetectedImmunoassayPass
Heavy Metals (ICP-MS)Not DetectedICP-MSPass
Sterility (PCR)No GrowthPCRPass
Endotoxin (USP <85>)0.097 EU/mLUSP <85>Reported
Third-Party Verified
Certificate of Analysis
Every lot is HPLC-tested at an ISO/IEC 17025-accredited lab. Open any batch's certificate below.
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Compound Information
Technical specifications
MOLECULAR PROFILE
What Is IGF-1 LR3?
- Type
- Synthetic IGF-1 analog
- CAS Number
- 143045-27-6
- Molecular Weight
- 9,117.60 g/mol
- Amino Acids
- 83
- Formula
- C400H625N111O115S9
- Sequence
- MFPAMPLSSL FVNGPRTLCG...
STRUCTURAL MODIFICATIONS
How It Differs from Native IGF-1
N-terminal extension+13 amino acids (MFPAMPLLSLFVN)Position 3 substitutionGlu → ArgTotal length83 vs 70 amino acidsIGFBP affinityDramatically reducedIGF-1R affinityRetainedMohan & Baylink, 2002
Product Guides & References
Verified publications and source documentation
BIOCHEMICAL JOURNAL
Insulin-like growth factor-I (IGF-I) and especially IGF-I variants are anabolic in dexamethasone-treated rats
1992•DOI: 10.1042/bj2820091•PMID: 1371669Tomas FM, Knowles SE, Owens PC et al.
View Source JOURNAL OF ENDOCRINOLOGYSuperior potency of infused IGF-I analogues which bind poorly to IGF-binding proteins is maintained when administered by injection
1996•DOI: 10.1677/joe.0.1500077•PMID: 8708565Tomas FM, Lemmey AB, Read LC, Ballard FJ
View Source JOURNAL OF ENDOCRINOLOGYIGF-binding proteins are multifunctional and act via IGF-dependent and -independent mechanisms
2002•DOI: 10.1677/joe.0.1750019•PMID: 12379487Mohan S, Baylink DJ
View Source AMERICAN JOURNAL OF PATHOLOGYIGF-1 has plaque-stabilizing effects in atherosclerosis by altering vascular smooth muscle cell phenotype
2011•DOI: 10.1016/j.ajpath.2010.10.007•PMID: 21281823von der Thüsen JH, Borensztajn KS, Moimas S et al.
View Source JOURNAL OF ENDOCRINOLOGYLong R3 insulin-like growth factor-I (IGF-I) infusion stimulates organ growth but reduces plasma IGF-I, IGF-II and IGF binding protein concentrations in the guinea pig
1995•DOI: 10.1677/joe.0.1460247•PMID: 7561636Conlon MA, Tomas FM, Owens PC et al.
View Source 
