IGF-1 LR3 Recombinant
Recombinant IGF-1 LR3 analogue at 99.4% HPLC purity, lyophilized and shipped cold-chain with a batch certificate of analysis.
- Purity (HPLC)
- 99.4%
- Fill weight
- 1 mg / vial
- CAS number
- 946870-92-4
- Form
- Lyophilized powder
- Assay
- RP-HPLC + mass spectrometry
- Storage
- −20 °C, protected from light
About IGF-1 LR3 as a reference compound
IGF-1 LR3 is a recombinant analogue of insulin-like growth factor 1 carrying an extended N-terminal sequence and a substitution at position 3. It is used in cell-culture and receptor-binding research where reduced binding-protein affinity is required. PureLabs releases each lot only after independent HPLC and mass-spectrometry confirmation of sequence identity and purity.
Handling and storage
- Store lyophilized at −20 °C; long-term storage at −80 °C is preferred.
- Reconstitute in sterile buffer; avoid strongly acidic or alkaline diluents.
- Aliquot immediately after reconstitution to prevent freeze–thaw degradation.
IGF-1 LR3 — frequently asked questions
Common laboratory questions about sourcing, purity, storage and shipping of IGF-1 LR3.
How should IGF-1 LR3 be stored after delivery?
Transfer to −20 °C on arrival. For storage beyond three months, −80 °C is recommended to preserve assay-grade integrity.
Is a mass-spectrometry trace included?
Yes, every certificate of analysis includes both the HPLC chromatogram and the MS trace for the specific lot.
Why does IGF-1 LR3 need cold-chain shipping?
It is a recombinant protein rather than a short peptide, so it degrades faster at ambient temperature. Insulated cold-chain packaging protects the assayed purity in transit.
What purity should I expect from a recombinant protein?
Current stock assays at 99.4% by reverse-phase HPLC with identity confirmed by mass spectrometry; the exact figure for your lot is printed on its certificate.
How should IGF-1 LR3 be stored after reconstitution?
Aliquot immediately, refrigerate at 2–8 °C for short-term work, and avoid repeated freeze–thaw cycles which are the main cause of activity loss.
Can I order IGF-1 LR3 in bulk for a research group?
Yes. Contact lab@purelabspeptidesstore.com with the quantity and required lot size and we will quote from the current or next production run.