The Recomposition Specialist: Understanding S4 (Andarine) S4, commonly known as Andarine, is one of the most well-documented and versatile non-steroidal Selective Androgen Receptor Modulators (SARMs) in the research landscape. Originally developed to treat conditions such as muscle wasting and osteoporosis, S4 is characterized by its high affinity for androgen receptors (ARs). In laboratory models, it is uniquely valued for its ability to promote significant anabolic activity while demonstrating a notable lack of water retention, making it a focal point for studies on lean tissue preservation and vascularity. Mechanism of Action: S4 operates by binding selectively to androgen receptors in skeletal muscle and bone. Once bound, it acts as a partial agonist, triggering the gene transcription pathways necessary for protein synthesis and muscle growth. Unlike traditional androgens, S4 does not aromatize into estrogen or convert into DHT, which minimizes systemic off-target interactions. A unique aspect of Andarine is its ability to competitively inhibit the binding of DHT to its receptors in the prostate, providing an additional layer of tissue selectivity. The compound undergoes hepatic metabolism primarily through oxidation and glucuronidation, with steady clearance via renal and biliary pathways. Technical Specifications: Chemical Name: (S)-3-(4-acetylamino-phenoxy)-2-hydroxy-2-methyl-N-(4-nitro-3-trifluoromethyl-phenyl)-propionamide CAS Number: 401900-40-1 Molecular Formula: C19H18F3N3O6 Molecular Weight: 441.36g/mol Purity: >99% (HPLC & LC-MS Verified) Form: Oral Capsules / Liquid Applications in Human Research: S4 is a staple in research protocols targeting physical refinement and structural integrity: Lean Mass Retention: Studies focus on S4’s ability to maintain muscle mass even during caloric deficits, making it ideal for research into “cutting” or weight loss. Fat Oxidation & Recomposition: Investigating the compound’s role in promoting the use of stored lipids for energy while simultaneously building lean tissue. Increased Vascularity & Hardness: Research models often utilize S4 to study the reduction of subcutaneous water retention and the improvement of muscle definition. Skeletal Strength: Analyzing the compound’s effectiveness in increasing bone mineral density and preventing age-related bone loss. The Swiss Chems Scientific Standard When you look for S4 for sale, ensuring the correct molecular concentration is essential for reproducible results. At Swiss Chems, we guarantee that our Andarine is strictly third-party lab tested for purity and potency. We utilize rigorous chromatography to ensure our capsules are free from fillers, heavy metals, and unreacted precursors. Don’t compromise your data with unverified sources. Buy online today from the Official Swiss Chems website and secure the high-purity S4 required for elite-level physiological research.
