S-23 Capsules

Buy S-23 Capsules: Premium Research Chemical for Advanced Muscle and Bone Studies

Introduction to Buy S-23 Capsules

Buy S-23 Capsules, also known as Mastorin, is a high-purity non-steroidal selective androgen receptor modulator (SARM) research chemical. Developed by GTX, Inc., S-23 Capsules is recognized as one of the most potent SARMs currently available for laboratory research. This aryl-propionamide SARM exhibits strong binding affinity for androgen receptors (Ki ≈ 1.7 nM) and delivers powerful tissue-selective anabolic effects. Researchers select S-23 Capsules to investigate muscle hypertrophy, lean body mass gains, bone mineral density improvement, fat reduction, and its unique potential as a reversible hormonal male contraceptive in preclinical models. The convenient capsule form ensures precise, consistent dosing for reproducible studies. Supplied exclusively for scientific research, S-23 Capsules supports cutting-edge investigations in androgen signaling, muscle wasting prevention, spermatogenesis suppression, and tissue-selective modulation.

Key Features and Benefits of S-23 Capsules

S-23 Capsules acts as a full agonist at androgen receptors with exceptional tissue selectivity, promoting robust anabolic activity in muscle and bone while showing reduced prostate impact at certain doses. Key features include high oral bioavailability, a half-life of approximately 11–12 hours, and strong suppression of luteinizing hormone (LH) and follicle-stimulating hormone (FSH).

Benefits for researchers: significant increases in lean muscle mass and strength, enhanced bone density, accelerated fat loss with a dry, hard aesthetic, and valuable insights into male contraception mechanisms through reversible spermatogenesis suppression. S-23 Capsules enables advanced exploration of SARM pathways, muscle preservation during catabolic states, and dose-dependent effects on reproductive tissues, offering a distinct profile compared to milder SARMs like Ostarine or Ligandrol.

Product Specifications

• Chemical Name: (2S)-N-(4-cyano-3-trifluoromethylphenyl)-3-(3-fluoro-4-chlorophenoxy)-2-hydroxy-2-methylpropanamide (S-23)
• Form: Capsules (common strengths: 5 mg, 10 mg, or 15 mg per capsule)
• Purity: ≥98% (verified by HPLC)
• Molecular Weight: 416.75 g/mol
• Molecular Formula: C18H13ClF4N2O3
• CAS Number: 1010396-29-8
• Solubility: Soluble in DMSO, ethanol, and other organic solvents
• Storage: Cool, dry, dark place; stable up to 2–3 years when properly sealed

S-23 Capsules ships in professional, tamper-evident blister or bottle packaging to maintain stability.

Applications and Usage

In professional laboratories, S-23 Capsules supports in-vitro androgen receptor binding assays, muscle cell differentiation studies (C2C12 myoblasts), osteoblast models, and animal models of muscle wasting, osteoporosis, or hormonal contraception. It aids structure-activity relationship (SAR) research on aryl-propionamide SARMs and investigations into lean mass gains, fat metabolism, spermatogenesis suppression, and bone health. Use only with calibrated equipment and approved research protocols. This product is strictly not for human or animal consumption.

Purity and Testing

Every batch of S-23 Capsules undergoes rigorous third-party testing via HPLC to confirm ≥98% purity and ensure absence of contaminants or impurities. Full certificates of analysis (CoA) accompany each order, providing researchers with confidence for reproducible, high-quality data in scientific publications.

Safety and Handling

Handle S-23 Capsules according to standard laboratory safety protocols. Wear appropriate PPE: nitrile gloves, safety goggles, and lab coat. Avoid inhalation, skin contact, or ingestion. In case of exposure, rinse affected areas thoroughly with water and seek medical advice if irritation occurs. Store securely away from light, moisture, and unauthorized access. May cause hormonal disruption, suppression of natural testosterone, or reproductive effects in research models.

Global Shipping and Discreet Delivery

We provide reliable global shipping for S-23 Capsules with discreet, plain packaging to protect privacy and ensure compliance. Orders placed before cutoff typically ship the same day. Tracking is available, with competitive rates and free shipping on qualifying bulk orders. Customers must verify the legal status of S-23 in their jurisdiction prior to purchase.

Why Choose Us for S-23 Capsules

We differentiate ourselves by supplying lab-verified, high-purity S-23 Capsules at competitive prices. Researchers trust our fast discreet worldwide delivery, responsive technical support, secure transactions, and flexible wholesale quantities. Our commitment to consistent quality and support for legitimate scientific advancement makes us the preferred partner for SARM research chemicals.

Legal and Safety Disclaimer

S-23 Capsules is sold strictly for research purposes only and is not intended for human or veterinary consumption. It is not approved by the FDA or equivalent agencies for any therapeutic use. Legal status varies by country and region (often classified as a research chemical but may fall under SARM-specific controls or analogue laws). Buyers are solely responsible for compliance with all local, national, and international regulations. We do not ship to prohibited destinations.

Frequently Asked Questions (FAQ)

What is S-23 Capsules? It is S-23 (Mastorin), a potent non-steroidal selective androgen receptor modulator (SARM) research chemical used for laboratory studies of muscle growth, bone health, and male contraception mechanisms.

How does S-23 differ from other SARMs? S-23 acts as a full agonist with strong anabolic effects and unique potential for reversible spermatogenesis suppression, often producing a harder, drier muscle appearance in research models.

What purity is guaranteed? ≥98% purity with full analytical certificates provided.

Is discreet shipping available? Yes — all packages use plain, unmarked materials for global discreet delivery.

Is S-23 Capsules legal? Legality depends on your location. Always check current regulations before ordering, as it is not approved for human use.

Optimize your SARM and androgen receptor research with premium S-23 Capsules. Contact our team today for bulk pricing, technical specifications, or custom inquiries. For scientific use only.