Description

YK-11 Overview

YK-11 is a synthetic small-molecule compound that has been investigated in preclinical research relating to androgen receptor activity and myostatin/follistatin-related signaling.

For laboratory researchers, YK-11 can serve as an experimental compound for studying molecular pharmacology, receptor-related pathways, and structure–activity relationships.

Because YK-11 is a pharmacologically active research chemical with limited human evidence, it should be presented accurately as a research compound and not as a nutritional supplement, therapeutic product, or human-use product.

What Is YK-11?

YK-11 is a synthetic small molecule structurally related to compounds investigated for androgen receptor activity.

It has attracted scientific interest because experimental research has explored its relationship with androgen receptor signaling and pathways involving myostatin and follistatin.

Potential research areas include:

• Androgen receptor research
• Molecular pharmacology
• Receptor-ligand interaction studies
• Myostatin-related pathway research
• Follistatin-related research
• Structure–activity relationship studies
• Small-molecule characterization
• Preclinical drug-discovery research

Importantly, YK-11 should not be presented as an established therapeutic or as a proven human muscle-building treatment.

Molecular Formula, Molecular Weight & Chemical Structure

YK-11 is a small molecule, meaning that a peptide sequence is not applicable.

For professional research documentation, chemical identity should be supported through appropriate analytical testing, such as HPLC and mass spectrometry.

Important: Confirm the molecular specification against your actual supplier’s batch documentation before publishing the information on a commercial product page.

Purity

A suitable research-grade specification can be presented as:

Purity: ≥98% by HPLC

This statement should only be used when supported by the corresponding batch-specific analytical documentation.

A professional Certificate of Analysis may include:

• HPLC purity
• HPLC chromatogram
• Mass spectrometry
• Expected molecular weight
• Observed molecular weight
• Lot/batch number
• Testing date
• Appearance
• Assay information where applicable

For research customers, a batch-specific COA is an important part of transparent product documentation.

Appearance

YK-11 is a small-molecule research compound, not a peptide.

Depending on the manufacturing and formulation process, it may be supplied as a white to off-white powder.

The exact appearance should be confirmed using the relevant batch specification or COA.

Visual appearance alone cannot establish the identity or purity of a chemical compound.

Available Research Quantities

Available quantities should match your actual inventory.

Possible research packaging options include:

• 10 mg
• 25 mg
• 50 mg
• 100 mg
• 250 mg

Smaller quantities may be suitable for analytical research, while larger quantities can support repeated laboratory experiments.

Only advertise quantities that you actually stock and can support with appropriate documentation.

Each container should clearly identify:

YK-11 + quantity + lot number + research-use statement

Storage Recommendations

YK-11 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 exposure to heat.
• Protect from direct light.
• Minimize temperature fluctuations.
• Follow the manufacturer’s documented storage conditions.
• Keep the material in its original, properly labeled container.

Researchers should consult the applicable technical documentation and COA for the exact storage requirements.

Reconstitution / Preparation Information

YK-11 is not a peptide, so conventional peptide reconstitution instructions do not apply.

Laboratory preparation depends on the research application, compound solubility, selected solvent, and required concentration.

Researchers should use validated laboratory procedures and document:

• Compound identity
• Lot number
• Solvent
• Concentration
• Preparation date
• Storage conditions

There is no universal preparation method appropriate for every YK-11 experiment.

This product page intentionally does not provide human dosing or administration instructions.

Intended Use — Research Only

YK-11 is intended for laboratory and scientific research purposes only.

Potential research applications include:

• Androgen receptor research
• Molecular signaling studies
• Myostatin-related research
• Follistatin-related pathway research
• Small-molecule pharmacology
• Receptor-ligand research
• Structure–activity relationship studies
• Preclinical research

YK-11 should not be marketed as:

• A bodybuilding supplement
• A muscle-building product for consumers
• A testosterone replacement
• A performance-enhancing supplement
• A medication
• A dietary supplement
• A treatment for muscle loss

Research Use Only. Not for Human or Veterinary Administration.

Researchers are responsible for ensuring their use complies with applicable laws, institutional requirements, and laboratory safety procedures.

Packaging & Shipping Information

Professional packaging should protect the research compound while providing clear product 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 packaging for visible damage and verify:

Product name + quantity + lot number + COA

Shipping should follow documented stability requirements and all applicable transportation regulations.

Frequently Asked Questions About YK-11

What is YK-11?

YK-11 is a synthetic small-molecule compound investigated in preclinical research involving androgen receptor and myostatin/follistatin-related pathways.

Is YK-11 a peptide?

No. YK-11 is a small molecule and does not have an amino-acid peptide sequence.

What is the molecular formula?

The commonly reported molecular formula is:

C₂₅H₃₄O₆

What is the molecular weight?

The molecular weight is approximately:

430.54 g/mol

Does YK-11 have a peptide sequence?

No. A peptide sequence is not applicable because YK-11 is a small molecule.

What purity should researchers look for?

A research-grade product may specify ≥98% purity by HPLC, provided the actual batch testing supports the claim.

What does YK-11 look like?

It may be supplied as a white to off-white powder, depending on the formulation and manufacturing process.

Does YK-11 require peptide reconstitution?

No. YK-11 is not a peptide. Laboratory preparation depends on the research application and compound solubility.

What is YK-11 researched for?

Experimental research has investigated YK-11 in relation to androgen receptor activity and myostatin/follistatin-related signaling.

Should YK-11 have a COA?

Yes. A batch-specific COA is recommended for professional research material and can document HPLC purity, mass spectrometry, molecular identity, and lot information.

How should YK-11 be stored?

Follow the manufacturer’s specifications for the specific batch and protect the material from excessive moisture, heat, light, and unnecessary temperature fluctuations.

Is YK-11 intended for human use?

A research-grade product should be clearly labeled:

Research Use Only — Not for Human or Veterinary Administration.

Key Takeaway

YK-11 is a synthetic small-molecule research compound, not a peptide.

Key specifications

• Product: YK-11
• Chemical type: Small molecule
• Molecular formula: C₂₅H₃₄O₆
• Molecular weight: 430.54 g/mol
• Peptide sequence: Not applicable
• Purity: ≥98% by HPLC when supported by the relevant COA
• Appearance: Typically white to off-white powder
• Intended use: Laboratory research only

For a professional product page, emphasize verified chemical identity, documented purity, analytical testing, accurate labeling, appropriate storage information, and batch-specific COA documentation.

Avoid making unsupported claims about human benefits or describing YK-11 as an established therapeutic. Clear scientific terminology makes the product page more credible and useful for legitimate research customers.

Research Use Only. Not for Human or Veterinary Administration.

Continue Learning: If you found this guide helpful, you may also want to read our previous peptide education articles covering the following topics

• Which peptide suppresses appetite the most? 
• How Much Weight Can You Lose on Tirzepatide?
• Why am I not losing weight on semaglutide?
• Tirzepatide Side Effects: 15 Powerful Facts, Warning Signs & Safe Management
• Discover the foods to avoid on GLP-1 medications,
• Discover the best peptide for obesity research

Scientific Reference: For additional peer-reviewed information on peptide stability, sterile preparation, and pharmaceutical reconstitution practices, visit

PubMed

European Medicines Agency (EMA)

United States Pharmacopeia (USP) Official Website

National Center for Biotechnology Information (NCBI)