Description
LGD-3303
LGD-3303 is a synthetic small-molecule compound belonging to the selective androgen receptor modulator (SARM) research class. It has been investigated in experimental pharmacology for its interaction with androgen receptors and related biological pathways.
For laboratory researchers, LGD-3303 can be used as a research tool in studies involving androgen-receptor signaling, ligand binding, structure–activity relationships, and small-molecule pharmacology.
Because LGD-3303 is a pharmacologically active research compound, it should be presented accurately as a research chemical and not as a nutritional supplement, peptide, or product intended for human consumption.
Research Use Only. Not for Human or Veterinary Administration.
What Is LGD-3303?
LGD-3303 is a synthetic compound investigated as a selective androgen receptor modulator.
SARMs are small molecules designed to interact with androgen receptors. LGD-3303 has been studied primarily in experimental settings to understand androgen receptor activity and the pharmacological characteristics of selective receptor ligands.
Potential research areas include:
- Androgen receptor biology
- Molecular pharmacology
- Ligand–receptor interactions
- Drug-discovery research
- Structure–activity relationship studies
- Small-molecule characterization
- Pharmacological screening
LGD-3303 is chemically distinct from peptide compounds such as BPC-157, CJC-1295, or semaglutide.
Molecular Formula, Molecular Weight & Chemical Structure
Because LGD-3303 is a small molecule, it does not have an amino-acid sequence.
| Property | Specification |
|---|---|
| Product name | LGD-3303 |
| Compound class | Selective androgen receptor modulator (SARM) |
| Chemical type | Small molecule |
| Molecular formula | C₁₉H₁₈F₃N₃O₄ |
| Molecular weight | Approximately 409.36 g/mol |
| Peptide sequence | Not applicable |
Chemical structure
LGD-3303 is characterized by a defined small-molecule chemical structure rather than a biological peptide sequence.
For research-grade material, analytical techniques such as HPLC and mass spectrometry can be used to assess chemical identity and purity.
Important: The molecular formula and molecular weight on your final product page should match the exact chemical form and batch documentation supplied by your laboratory or manufacturer.
Purity
A suitable research specification can be written as:
Purity: ≥98% by HPLC
Only make this claim when it is supported by the actual batch-specific analytical results.
A professional COA may contain:
- HPLC purity percentage
- HPLC chromatogram
- Mass spectrometry
- Expected molecular weight
- Observed molecular weight
- Lot/batch number
- Testing date
- Appearance
- Assay or content information where applicable
Researchers should rely on the specific COA for their lot when evaluating product quality.
Appearance
LGD-3303 is a small-molecule research compound, so “white lyophilized powder” is not necessarily an appropriate generic description.
Depending on the manufacturing and formulation process, the material may appear as a white to off-white powder.
The exact appearance should be taken from the applicable batch specification.
Appearance alone cannot confirm chemical identity or purity. Appropriate analytical testing is required for meaningful verification.
Available Vial Sizes
Available quantities depend on your actual inventory and packaging configuration.
Possible research formats include:
- 10 mg
- 25 mg
- 50 mg
- 100 mg
- 250 mg
Smaller quantities can be convenient for analytical laboratories, while larger quantities may be useful for laboratories conducting repeated experiments.
Only list sizes you actually stock and can support with appropriate batch documentation.
Each container should clearly identify:
LGD-3303 + quantity + lot number + research-use statement
Storage Recommendations
LGD-3303 should be stored according to the stability information established for the specific batch.
General laboratory considerations include:
- Keep the container tightly closed.
- Protect the compound from excessive moisture.
- Avoid unnecessary heat exposure.
- Protect from direct light.
- Minimize repeated temperature fluctuations.
- Follow the manufacturer’s documented storage requirements.
- Keep the compound in its original, properly labeled container.
Researchers should consult the product’s technical documentation and COA for the applicable storage conditions.
Reconstitution / Preparation Information
Because LGD-3303 is a small molecule and not a peptide, conventional peptide reconstitution instructions do not apply.
Laboratory preparation depends on:
- Experimental requirements
- Compound solubility
- Selected analytical solvent
- Desired research concentration
- Experimental design
Researchers should follow an appropriate laboratory protocol and document:
- Compound identity
- Lot number
- Solvent
- Concentration
- Preparation date
- Storage conditions
There is no universal preparation procedure appropriate for every LGD-3303 research application.
This product page intentionally does not provide human administration or dosing instructions.
Intended Use — Research Only
LGD-3303 is intended for laboratory and scientific research purposes only.
Potential research applications include:
- Androgen receptor research
- Small-molecule pharmacology
- Receptor-binding studies
- Drug-discovery research
- Structure–activity relationship investigations
- Molecular characterization
- Pharmacological screening
LGD-3303 should not be marketed as:
- A bodybuilding supplement
- A muscle-building product for consumers
- A testosterone replacement
- A performance-enhancing product
- A medication
- A dietary supplement
- A treatment for low testosterone
Research Use Only. Not for Human or Veterinary Administration.
Researchers are responsible for ensuring that their use of the material complies with applicable laws, institutional requirements, and laboratory safety procedures.
Packaging & Shipping Information
Professional packaging should protect the research compound and provide clear identification.
Packaging may include:
- Securely sealed vial or container
- Product identification label
- Net quantity
- Lot/batch number
- Research-use statement
- Protective secondary packaging
- Batch-specific COA
Upon delivery, researchers should inspect the package for visible damage.
Before placing the material into laboratory inventory, verify:
Product name + quantity + lot number + COA
Shipping conditions should follow the product’s documented stability requirements and applicable transportation regulations.
Frequently Asked Questions About LGD-3303
What is LGD-3303?
LGD-3303 is a synthetic small-molecule compound investigated as a selective androgen receptor modulator.
Is LGD-3303 a peptide?
No. LGD-3303 is a small molecule and therefore does not have an amino-acid peptide sequence.
What is the molecular formula?
The commonly reported molecular formula is:
C₁₉H₁₈F₃N₃O₄
What is the molecular weight?
The molecular weight is approximately:
409.36 g/mol
Does LGD-3303 have a peptide sequence?
No. A peptide sequence is not applicable because LGD-3303 is a small-molecule compound.
What purity should researchers look for?
A research-grade product may specify ≥98% purity by HPLC, provided the claim is supported by batch-specific analytical testing.
What does LGD-3303 look like?
It may be supplied as a white to off-white powder, depending on the specific formulation and manufacturing process.
How should LGD-3303 be prepared for research?
Preparation depends on the experimental application, compound solubility, solvent, and required concentration. Researchers should use validated laboratory procedures.
What is LGD-3303 researched for?
Research has examined LGD-3303 in areas involving androgen receptor pharmacology, ligand–receptor interactions, molecular characterization, and drug discovery.
Should LGD-3303 come with a COA?
Yes. A batch-specific COA is recommended for professional research material. It can provide HPLC purity, mass spectrometry, molecular-weight confirmation, and lot information.
How should LGD-3303 be stored?
Follow the manufacturer’s specifications for the particular batch. Generally, the material should be protected from excessive moisture, heat, light, and unnecessary temperature fluctuations.
Is LGD-3303 intended for human use?
A research-grade product should be clearly labeled:
Research Use Only — Not for Human or Veterinary Administration.
Key Takeaway
LGD-3303 is a small-molecule research compound, not a peptide.
Key specifications
- Product: LGD-3303
- Compound class: Selective androgen receptor modulator
- Molecular formula: C₁₉H₁₈F₃N₃O₄
- Molecular weight: approximately 409.36 g/mol
- Peptide sequence: Not applicable
- Purity: ≥98% by HPLC when supported by the applicable COA
- Appearance: Typically white to off-white powder
- Intended use: Laboratory research only
For a professional product page, emphasize accurate chemical identification, documented purity, analytical testing, appropriate storage information, and batch-specific COA documentation.
Avoid describing LGD-3303 as a peptide or providing human dosing and administration instructions. Scientifically accurate terminology makes the product listing clearer and more credible for laboratory researchers.
Research Use Only. Not for Human or Veterinary Administration.
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Scientific Reference: For additional peer-reviewed information on peptide stability, sterile preparation, and pharmaceutical reconstitution practices, visit
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