Selective androgen receptor modulator (SARM) research laboratories and qualified investigators studying tissue-selective anabolic agents, myotrophic compounds, and androgen receptor signaling consistently choose our S-4 (Andarine) capsules as a precise, convenient research format. Each capsule contains a standardized dose of S-4 (Andarine), supplied exclusively for controlled in vitro, pharmacological, receptor-binding, muscle hypertrophy, prostate selectivity, vision-related pathway, and analytical investigations.
Laboratory-Grade Purity & Third-Party Verification
Our S-4 Andarine capsules are formulated with ≥98% pure active compound (often ≥99%), confirmed through orthogonal analytical methods including HPLC, LC-MS/MS, GC-MS, and NMR spectroscopy. Independent third-party testing provides full Certificates of Analysis (CoA) for every production batch, verifying chemical identity, potency per capsule, residual solvent levels, heavy metal screening, microbial purity, and absence of degradation products or contaminants. This rigorous quality protocol ensures batch-to-batch consistency and clean, reproducible results in androgen receptor affinity assays, myotube differentiation studies, anabolic-to-androgenic ratio profiling, prostate vs. levator ani muscle selectivity comparisons, and reference standard preparation.
As a first-generation arylpropionamide SARM, S-4 (Andarine) exhibits strong binding affinity to the androgen receptor with notable muscle-selective anabolic activity and partial agonism in certain tissues, making it a classic research tool for studying SARM pharmacology, vision pathway modulation (due to reported effects on retinal cells in preclinical models), and structure-activity relationships in non-steroidal androgen modulators.
Key Product Specifications
- Full chemical name: (S)-3-(4-Acetamido-3-fluorophenyl)-2-hydroxy-2-methyl-N-(4-nitro-3-trifluoromethylphenyl)propanamide
- CAS Number: 401900-40-1
- Molecular formula: C₁₉H₁₈F₃N₃O₆
- Molar mass: 441.36 g/mol
- Dosage per capsule: Standardized research dosing (typically 25mg or 50mg – contact for current spec sheet)
- Form: Precision-filled capsules for accurate handling and dissolution
- Appearance: Uniform solid capsules in tamper-evident bottles
- Storage: 2–8°C in original airtight container; protect from light, heat, and moisture for optimal stability
- Excipients: Standard pharmaceutical-grade fillers (e.g., microcrystalline cellulose, magnesium stearate) for capsule integrity
Capsules are packaged in secure, tamper-evident bottles with desiccant to maintain potency and prevent contamination during transit and storage.
Why Researchers Prefer S-4 Andarine Capsules
The capsule format simplifies quantitative handling for:
- Preparing exact stock solutions without powder weighing variability
- Conducting dose-response curves or chronic administration protocols
- Comparing pre-dosed SARMs in analytical workflows
- Minimizing exposure during experimental setup in controlled environments
S-4 remains a benchmark compound for studying high-affinity AR binding, muscle anabolism with reduced androgenic side effects in select tissues, and unique vision-related receptor interactions in preclinical models.
“The consistent dosing and high purity of these S-4 Andarine capsules streamlined our SARM selectivity and vision pathway assays – reliable, reproducible data every time.” – Androgen Receptor & Pharmacology Research Group
Strict Research-Use-Only Policy
These S-4 capsules (Andarine) are sold exclusively for legitimate scientific research, forensic analysis, reference standard preparation, and authorized institutional or academic purposes. Not for human or veterinary consumption, not approved for medical, therapeutic, dietary supplement, or performance-enhancing applications. All purchasers must be licensed researchers, accredited laboratories, or verified entities in full compliance with applicable national and international regulations concerning research chemicals, investigational SARMs, and controlled substances. Credential verification or institutional documentation may be required.
Limited Availability – Secure Your Supply Today
High-specification S-4 Andarine capsules continue to be sought after by advanced SARM, anabolic selectivity, and androgen receptor research programs, with production limited by stringent synthesis, encapsulation accuracy, and quality assurance processes. Prevent project delays by reserving your required quantity promptly.
Buy S-4 capsules online from a trusted S-4 Andarine capsules USA supplier for fast, discreet, tracked delivery to your verified research facility. Add to cart today and equip your lab with a premium, precisely dosed SARM capsule reagent. Order S-4 capsules before current stock sells out – advance your androgen receptor and myotrophic research with confidence.
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