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IGF-1 LR3: Research, Handling and Batch Documentation

IGF-1 LR3 is insulin-like growth factor 1 with a 13-residue N-terminal extension and an Arg3Glu substitution, modifications that reduce binding-protein affinity and lengthen its measured half-life.

Part of Volta's peptides.

Identity and specification

Form
Lyophilized powder
Other known names
Long R3 IGF-1, Long Arg3 Insulin-like Growth Factor-1
Compound class
IGF-1 analogue
Sequence, one-letter
MFPAMPLSSLFVNGPRTLCGAELVDALQFVCGDRGFYFNKPTGYGSSSRRAPQTGIVDECCFRSCDLRRLEMYCAPLKPAKSA
Sequence, three-letter
Met-Phe-Pro-Ala-Met-Pro-Leu-Ser-Ser-Leu-Phe-Val-Asn-Gly-Pro-Arg-Thr-Leu-Cys-Gly-Ala-Glu-Leu-Val-Asp-Ala-Leu-Gln-Phe-Val-Cys-Gly-Asp-Arg-Gly-Phe-Tyr-Phe-Asn-Lys-Pro-Thr-Gly-Tyr-Gly-Ser-Ser-Ser-Arg-Arg-Ala-Pro-Gln-Thr-Gly-Ile-Val-Asp-Glu-Cys-Cys-Phe-Arg-Ser-Cys-Asp-Leu-Arg-Arg-Leu-Glu-Met-Tyr-Cys-Ala-Pro-Leu-Lys-Pro-Ala-Lys-Ser-Ala
Residues
83
CAS number
946870-92-4
Molecular weight
9,111 g/mol (9.1 kDa)
Production
Synthetic, by solid-phase peptide synthesis
Solubility
Soluble in sterile water
Shelf life
24 months from date of manufacture

Molecular structure, sequence and the published laboratory studies on IGF-1 LR3 are in the compound library entry for IGF-1 LR3.

Vial sizes available

Every size of IGF-1 LR3 Volta lists, in stock or not. Each is a separate catalogue page with its own batch number and specification table.

Purity and batch documentation

Volta's release specification is >99% (HPLC). That is a threshold we set. >99% is the specification every batch is released to. The figure on a certificate is what a laboratory measured for one lot.

No third-party certificate has been published for IGF-1 LR3yet. The certificates Volta does publish, with the laboratory's own verification link on each, are in the certificate archive.

Research on IGF-1 LR3

Handling and stability

Regulatory context

More peptides

IGF-1 LR3 sits in Volta's peptides group, alongside the other compounds of the same composition. The whole range is on the full research catalogue, and the library of comparisons and guides is under peptide research.

Research use only. For in-vitro laboratory research by qualified professionals only. Not for human or animal administration. Not a drug, food, cosmetic or dietary supplement. Not intended to diagnose, treat, cure, mitigate or prevent any disease. Volta does not provide dosing, administration or protocol guidance for any material listed. Read the full research disclaimer.

Cluster last reviewed: 2026-09-16.

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