Buy S-4 (Andarine) Capsules Online | High-Purity First-Generation SARM Research Chemical

Introduction to Buy S-4 (Andarine) Capsules

Buy S-4 (Andarine) Capsules, widely recognized by its research designation Andarine, is a potent, synthetic, non-steroidal Selective Androgen Receptor Modulator (SARM) and one of the earliest and most extensively studied compounds in its class. Originally developed by GTx, Inc. for the investigation of muscle wasting, osteoporosis, and benign prostatic hyperplasia (BPH), S-4 remains a cornerstone reference standard in experimental endocrinology.

Unlike later-generation SARMs, Andarine exhibits a unique receptor binding profile. While it demonstrates strong anabolic selectivity in skeletal muscle and bone tissue, it also acts as an antagonist at androgen receptors in the prostate. Furthermore, S-4 is distinct in its interaction with androgen receptors in ocular tissue, making it a highly valuable compound for researchers studying tissue-specific receptor conformational changes. To meet the exacting needs of modern analytical and pharmacological laboratories, we supply S-4 in precision-dosed capsules. This format eliminates the variables associated with manual powder weighing, providing researchers with an exact, pre-measured reference unit optimized for consistent in-vitro assay preparation. Note: This product is strictly intended for in-vitro research and analytical purposes only.

Key Features and Benefits – Buy S-4 (Andarine) Capsules

• Absolute Dosing Precision: Each capsule contains an exactly measured dose of S-4, eliminating the risk of micro-weighing errors and ensuring absolute consistency across your research assays.
• Unique Antagonist Profile: S-4 provides researchers with a rare model to study a SARM that exerts anabolic effects in muscle/bone while simultaneously acting as an androgen receptor antagonist in prostate tissue.
• Ocular Receptor Research Model: S-4’s well-documented interaction with androgen receptors in the eye makes it an indispensable tool for studying the role of AR in visual pathways and tissue-specific side effects.
• Streamlined Workflow: Pre-dosed capsules accelerate laboratory preparation times, allowing researchers to bypass tedious analytical weighing protocols and proceed directly to solvent dissolution.

Product Specifications

• Chemical Name: S-3-(4-acetylamino-phenoxy)-2-hydroxy-2-methyl-N-(4-nitro-3-trifluoromethyl-phenyl)-propionamide
• Common Designation: S-4 / Andarine / GTx-007
• CAS Number: 401900-40-1
• Class: Selective Androgen Receptor Modulator (SARM) / Research Chemical
• Form: Precision-Dosed Capsules (Encapsulated Powder)
• Purity: ≥ 98% (Active ingredient verified by Independent Third-Party Testing)
• Appearance: Powder encapsulated in readily dissolvable capsules (color varies by batch)
• Storage Requirements: Store in a cool, dry, dark environment (room temperature or 4°C). Keep blister packs/bottles tightly sealed to protect from moisture.

Applications and Usage

S-4 Capsules are exclusively designated for in-vitro (outside a living organism) research and analytical applications. Common laboratory applications include:

• Prostate AR Antagonism Studies: Investigating the mechanism by which S-4 blocks androgen receptor signaling in prostate tissue models, relevant to BPH and anti-androgenic research.
• Ocular Receptor Binding Assays: Analyzing the unique conformational changes induced by S-4 metabolites at androgen receptors in ocular tissue to study visual pathway disruptions.
• Anabolic vs. Androgenic Profiling: Mapping the structural-activity relationships (SAR) that allow S-4 to activate muscle/bone AR while antagonizing prostate AR.
• Analytical Calibration: Utilizing the precisely dosed capsule content as a known quantitative standard for LC/MS and GC/MS spectroscopy to validate instruments and detect Andarine metabolites in biological matrices.

Disclaimer: This product is not for human or veterinary consumption. It must only be handled in controlled laboratory environments by qualified professionals.

Purity and Testing

We guarantee a purity level of ≥ 98% for the S-4 utilized in our capsules. Every production batch undergoes rigorous, independent third-party testing to verify chemical identity, absolute purity, dosage accuracy, and the absence of dangerous residual solvents, heavy metals, or unreacted precursors. We ensure our Andarine is free from amino-marker impurities commonly found in inferior synthetics. Certificates of Analysis (CoA) and Safety Data Sheets (SDS) are provided upon request, ensuring complete traceability and compliance for your research institution.

Safety and Handling

While the encapsulated format offers enhanced safety over loose bulk powders, S-4 remains a potent investigational SARM requiring strict laboratory protocols:

• Personal Protective Equipment (PPE): Always wear nitrile gloves and safety goggles when handling the capsules or extracting the compound for assay preparation.
• Extraction Safety: If opening capsules to extract the powder for volumetric dosing, do so within a certified chemical fume hood using appropriate non-sparking tools to prevent particle dispersion.
• Accidental Exposure: Avoid direct contact with the bare compound. If skin contact occurs, wash thoroughly with soap and water.
• Secure Storage: Keep capsules locked away in a secure laboratory cabinet, out of reach of unauthorized personnel.

Global Shipping and Discreet Delivery

• Global Reach: We ship S-4 Capsules internationally, complying with all hazardous materials shipping regulations.
• Discreet Packaging: Orders are dispatched in unmarked, tamper-evident packaging. The uniform shape of capsule bottles/blister packs makes them exceptionally easy to ship discreetly without attracting unwanted attention.
• Rapid Processing: Orders are processed and shipped within 24 hours of cleared payment with full end-to-end tracking.
• Damage Prevention: Capsule containers are cushioned within rigid outer boxes to prevent crushing during international transit.

Why Choose Us To Buy S-4 (Andarine) Capsules?

• Innovative Delivery Formats: We provide research chemicals in precision-dosed, laboratory-friendly formats that prioritize accuracy, consistency, and longevity.
• Uncompromising Quality: We verify every batch in-house and via third-party labs before it reaches you.
• Total Transparency: Full analytical data provided—no fillers, no impurities, just verified, precisely dosed S-4.
• Secure Transactions: We utilize SSL encryption and accept secure, discreet payment methods, including major cryptocurrencies (Bitcoin, Monero, Ethereum) and secure bank transfers.

Legal and Safety Compliance

S-4 (Andarine) Capsules are sold strictly as research chemicals and are not approved by the FDA, EMA, or any equivalent regulatory body for human or veterinary use. It is an investigational compound.

It is the sole responsibility of the purchaser to ensure that the acquisition, possession, and use of S-4 comply with all local, state, national, and international laws. Warning: S-4 is prohibited by the World Anti-Doping Agency (WADA) and is banned in all competitive sports. Because its metabolites interact strongly with ocular androgen receptors, it carries specific investigational risks related to visual disturbances. Furthermore, SARMs are explicitly regulated as unapproved drugs in many jurisdictions (including the USA, where they are illegal in dietary supplements). We do not ship to regions where this compound is explicitly prohibited for purchase. By purchasing from us, you affirm that you are a qualified researcher or institutional buyer over the age of 18, and you assume all legal liability for the product upon delivery.

Frequently Asked Questions (FAQ)

Q1: Why choose S-4 capsules over bulk Andarine powder?
A: Bulk SARM powders are highly susceptible to moisture absorption and micro-weighing errors. Our precisely dosed capsules guarantee an exact, pre-measured reference mass, protect the compound from environmental degradation, and streamline laboratory workflow by removing the need for analytical balances during assay preparation.

Q2: What makes S-4 (Andarine) different from other SARMs like Ostarine or Ligandrol?
A: S-4 features a unique tissue-selectivity profile. While it is anabolic in muscle and bone like other SARMs, it acts as an antagonist at androgen receptors in the prostate, making it valuable for anti-androgenic research. Additionally, S-4 is distinct because its metabolites bind strongly to androgen receptors in the eye, a characteristic not shared by Ostarine or Ligandrol, making it vital for ocular-receptor studies.

Q3: Can S-4 Capsules be consumed by humans?
A: Absolutely not. S-4 is an investigational research chemical. Because it interacts with ocular androgen receptors, it carries specific risks related to visual disturbances (such as yellow-tinted vision). It also poses risks of testosterone suppression. It is strictly for in-vitro laboratory and analytical research. Human ingestion is strictly prohibited.

Q4: Do you provide a Certificate of Analysis (CoA)?
A: Yes. We provide a comprehensive CoA—including HPLC, GC/MS, and dosage verification data—for every capsule batch we sell. This guarantees the identity, purity, and exact mass of the active compound.

Q5: Is it legal to buy S-4 in my country?
A: Legality varies drastically. While legal for legitimate research in many parts of the world, SARMs are heavily regulated in the USA, Australia, and parts of Europe, particularly regarding human consumption and inclusion in dietary supplements. We cannot provide legal advice. It is your responsibility to research your local laws before placing an order.

Q6: How should I store S-4 Capsules for long-term research?
A: Store the capsules in their original, tightly sealed container in a cool, dry, dark place (room temperature is typically sufficient, or 4°C for long-term storage). Keep away from direct sunlight, heat, and moisture to prevent degradation of the capsule shell and active ingredient.