IGF-2 LR3 (1mg)
IGF-2 LR3 — Construct Identity Review
Order IGF-2 LR3 (1mg) online for laboratory research with US shipping options at checkout. Compare the listed vial options and current price, then add your selection to cart and continue to checkout. Review available COA records for the exact product, strength and lot. Research Use Only; not for human or veterinary use.
Browse Growth Factors listings
IGF-2 LR3 is listed for growth factors laboratory research. Catalog vial contents are 1mg; select the required strength before ordering. This material is supplied for Research Use Only, not as a medicine or a product for human or veterinary use.
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IGF-2 LR3 shipping to New York, NY
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IGF-2 LR3 shipping to Los Angeles, CA
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IGF-2 LR3 shipping to Chicago, IL
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IGF-2 LR3 shipping to Houston, TX
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IGF-2 LR3 shipping to Phoenix, AZ
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IGF-2 LR3 shipping to Miami, FL
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IGF-2 LR3 shipping to Atlanta, GA
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IGF-2 LR3 shipping to Seattle, WA
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Research Applications & Benefits
- Construct-assignment research
- IGF-II pathway context
- Identity-first analytical review
What is IGF-2 LR3?
IGF-2 LR3 is a research-market catalog name. This catalog lists a 1mg vial, but the exact amino-acid construct represented by the LR3 label has not been confirmed from an original supplier specification or a matching lot identity report.
Listed vial contents: 1mg. These are supplied quantities, not administration doses. Current pricing and availability are shown in the strength selector.
Which identity should I verify?
Construct pending. Obtain an original specification naming the target sequence and theoretical mass, plus a matching lot LC-MS result and quantitative report. Until then, IGF-2 LR3 must not be treated as a confirmed analog of IGF-1 LR3.
What mechanisms are being studied?
Native IGF-II can signal through IGF-system receptors, including insulin receptor isoform A. That parent-molecule biology does not prove the structure, receptor selectivity, binding-protein affinity or persistence of an unconfirmed material sold as IGF-2 LR3.
What are the research questions?
- Analytical assignment of the marketed LR3 construct
- Comparison with native IGF-II after identity confirmation
- Receptor and binding-protein studies using a defined reference material
What does the published work describe?
Belfiore and colleagues reviewed insulin-receptor isoforms and described IGF-II signaling through insulin receptor isoform A. This is background evidence for native IGF-II biology. No direct peer-reviewed paper validating the specific IGF-2 LR3 construct represented by this catalog item was identified.
Experimental models in the cited papers
- Review of insulin-receptor isoform biology; not a study of this catalog construct
What could future research explore?
The first research question is analytical: define the target sequence, calculate its theoretical mass and compare it with observed intact-mass data from the same lot. Only then could receptor signaling, binding-protein interactions or pharmacokinetics be investigated without borrowing conclusions from IGF-1 LR3 or native IGF-II.
These are research directions, not established applications of the product sold here.
What are the limits of this evidence?
The name, photo and 1mg label do not establish sequence, mass, purity or quantity. Product is currently undergoing testing. Results will be reported once available. Construct-specific pharmacokinetic, binding-protein and receptor-selectivity claims are therefore not made for this inventory.
Study references
- Belfiore A, et al. Insulin Receptor Isoforms in Physiology and Disease: An Updated View. Endocr Rev. 2017. PMID 28973479
How should I check lot documentation?
Match the product, strength and lot to an original analysis document. Literature describes experimental findings; it does not verify the contents of this inventory. A report is evidence only for the product, strength and lot it names.
How is IGF-2 LR3 handled in the lab?
For IGF-2 LR3, record the product code IGF2LR3, selected strength and lot before opening. Follow the material-specific safety data sheet and laboratory SOP, with appropriate gloves, eye protection and containment. For a documented dry preparation, let the sealed vial equilibrate before opening to reduce condensation; minimize time open and use clean, compatible vessels.
For IGF-2 LR3, establish the supplied preparation or construct, formulation and activity documentation before dilution. Protein folding, aggregation, adsorption and excipient compatibility can affect assays. Evaluate compatible vessels and buffer conditions in a small study; do not add a carrier protein unless it is appropriate for the assay and documented in the SOP.
For IGF-2 LR3, calculate mass concentration as measured material mass divided by final solution volume. Calculate molarity only with a documented molecular weight for the supplied chemical form; no usable molecular weight is established by the blank catalog field. Where available, use matched-lot net content rather than treating chromatographic purity as a mass correction. Record both stock concentration and subsequent dilution factors.
Use the documented storage conditions for the supplied IGF-2 LR3 form and lot. For a documented lyophilized preparation, keep the vial sealed and protected from moisture; for solutions, validate temperature, light exposure and holding time in the assay. Use compatible single-use aliquots when appropriate to reduce repeated freeze-thaw. No universal temperature or 28-day solution shelf life is established by the catalog name.
A IGF-2 LR3 laboratory protocol should record identity, product code IGF2LR3, strength, lot, applicable analysis results, solvent and pH, stock concentration, dilution sequence, vessel type, storage history and assay endpoints. Include vehicle and reference controls, independent replicates and predefined acceptance criteria. Separate handling validation from biological interpretation; these notes do not provide administration or dosing instructions.
Research Use Only. Not for human consumption, therapeutic, veterinary or any in-vivo use.
Product Specifications
- Compound
- IGF-2 LR3
- CAS Number
- Molecular Weight
- HPLC Purity Specification
- ≥98%
- Category
- Growth Factors
- Starting Price
- $129.00 USD
- Country of Origin
- United States
- Shipping
- Cold-chain insulated packaging, fast domestic delivery
- Payment
- Card, ACH, and cryptocurrency (10% discount)
Quality & Verification
IGF-2 LR3 has a catalog purity specification of ≥98%; this is not a measured result for every vial. Match the product, exact strength, batch and lot to its analysis record and read only the reported fields. HPLC peak-area purity, measured content and endotoxin are separate measurements. A blank field means no result is reported, not zero or passed. A purity percentage alone does not establish identity, sterility or suitability for human use.
Frequently Asked Questions
What is IGF-2 LR3?
IGF-2 LR3 is listed for growth factors laboratory research. Catalog vial contents are 1mg; select the required strength before ordering. This material is supplied for Research Use Only, not as a medicine or a product for human or veterinary use.
What strengths of IGF-2 LR3 are available?
The catalog lists 1mg. These labels describe vial contents, not administration doses. Select the required strength for current pricing and availability; match analysis records to that exact strength and lot.
How should I interpret IGF-2 LR3 purity results?
IGF-2 LR3 has a catalog purity specification of ≥98%; this is not a measured result for every vial. Match the product, exact strength, batch and lot to its analysis record and read only the reported fields. HPLC peak-area purity, measured content and endotoxin are separate measurements. A blank field means no result is reported, not zero or passed. A purity percentage alone does not establish identity, sterility or suitability for human use.
How should IGF-2 LR3 be handled in the laboratory?
For IGF-2 LR3, record the product code IGF2LR3, selected strength and lot before opening. Follow the material-specific safety data sheet and laboratory SOP, with appropriate gloves, eye protection and containment. For a documented dry preparation, let the sealed vial equilibrate before opening to reduce condensation; minimize time open and use clean, compatible vessels.
How do I choose a laboratory solvent for IGF-2 LR3?
For IGF-2 LR3, establish the supplied preparation or construct, formulation and activity documentation before dilution. Protein folding, aggregation, adsorption and excipient compatibility can affect assays. Evaluate compatible vessels and buffer conditions in a small study; do not add a carrier protein unless it is appropriate for the assay and documented in the SOP.
How do I calculate a IGF-2 LR3 stock concentration?
For IGF-2 LR3, calculate mass concentration as measured material mass divided by final solution volume. Calculate molarity only with a documented molecular weight for the supplied chemical form; no usable molecular weight is established by the blank catalog field. Where available, use matched-lot net content rather than treating chromatographic purity as a mass correction. Record both stock concentration and subsequent dilution factors.
How should IGF-2 LR3 be stored after preparation?
Use the documented storage conditions for the supplied IGF-2 LR3 form and lot. For a documented lyophilized preparation, keep the vial sealed and protected from moisture; for solutions, validate temperature, light exposure and holding time in the assay. Use compatible single-use aliquots when appropriate to reduce repeated freeze-thaw. No universal temperature or 28-day solution shelf life is established by the catalog name.
What should a IGF-2 LR3 lab protocol document?
A IGF-2 LR3 laboratory protocol should record identity, product code IGF2LR3, strength, lot, applicable analysis results, solvent and pH, stock concentration, dilution sequence, vessel type, storage history and assay endpoints. Include vehicle and reference controls, independent replicates and predefined acceptance criteria. Separate handling validation from biological interpretation; these notes do not provide administration or dosing instructions.
Does Fmoc or Boc synthesis explain this IGF-2 LR3 product?
The catalog name IGF-2 LR3 alone does not establish a synthetic, recombinant or preparation-specific production route. Confirm construct or preparation documentation and relevant analytical or activity methods before drawing conclusions from a peptide synthesis guide.
Is IGF-2 LR3 for human use?
No. IGF-2 LR3 is strictly Research Use Only. It is not intended for human or veterinary use, diagnosis or treatment. Laboratory handling guidance is not an administration protocol.
Research Use Only. This product is intended for licensed laboratory research and is not for human or veterinary use.
