IGF-1 LR3
Synthetic 83-residue analog. Loti Labs supplies it as lyophilized powder in 1 mg vials, for laboratory research.

Specifications
Reference dataFormula, molecular weight and CAS number are reference values for the compound, not measurements of a specific batch.
- Compound
- IGF-1 LR3
- Class
- Synthetic 83-residue analog
- Molecular formula
- C400H625N111O115S9
- Physical presentation
- Lyophilized powder, sealed vial
- Formats
- 1 mg vial
Current certificates of analysis
TipMatch the batch number on your vial label to the certificate. Click any certificate to open it full size.
1 mg vial
Batch LLLR31126 tested at 99.17% purity by HPLC. Identity was confirmed by mass spectrometry. Endotoxin screen: NMT 0.05 EU/mL.
- Batch
- LLLR31126
- Tested
- Nov 12, 2026
- Laboratory
- ILS Laboratories
Batch history
RecordEvery certificate stays on record under its batch number, even after a newer batch arrives.
| Tested | Format | Batch | Purity | Identity | Laboratory | |
|---|---|---|---|---|---|---|
| Nov 12, 2026 | 1 mg vial | LLLR31126 | 99.17% | Confirmed | ILS Laboratories | Certificate |
| Jun 17, 2026 | 1 mg vial | LL-LR3-526 | 99.8% | Conforms | Bioviridian | Certificate |
How every batch is tested
MethodEvery Loti Labs batch goes to an independent, U.S.-based third-party laboratory.
- 1
Sample sent
Samples from the production batch go to the laboratory under the batch number.
- 2
Purity
HPLC separates sample components and can be used to assess chromatographic purity. Determining absolute compound content requires a validated quantitative assay.
- 3
Identity
Mass spectrometry provides evidence supporting compound identity, where reported.
- 4
Archived
The certificate is published and kept for good. Search the archive.
Questions researchers ask
ArchiveEvery certificate we have published is searchable in the COA archive.
What purity is the current IGF-1 LR3 batch?
1 mg vial: batch LLLR31126 tested at 99.17% purity by HPLC on Nov 12, 2026, identity confirmed by mass spectrometry.
What is the molecular formula and weight of IGF-1 LR3?
IGF-1 LR3 has molecular formula C400H625N111O115S9 and a molecular weight of 9117.6 g/mol, CAS 143045-27-6.
How do I find the certificate for my vial?
Match the lot number printed on the vial label to the batch column in the history table, or search it in the Loti Labs COA archive. Every certificate is kept permanently under its batch number.
What is IGF-1 LR3 from Loti Labs intended for?
Loti Labs supplies IGF-1 LR3 strictly for laboratory, analytical and research use. It is not for human or veterinary use, and it is not a drug, food or cosmetic.
Further reading on IGF-1 LR3
Related compound profiles
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Research use only. This page is provided for laboratory, analytical and research reference. Products are not drugs, foods or cosmetics and are not for human or veterinary use.

