S-4 (Andarine) / 100 x 25mg

Description

Andarine, also known as S-4, is a selective non-steroidal Androgen Receptor Modulator (SARM) developed for the treatment of muscle wasting diseases, osteoporosis, and benign prostatic hypertrophy (BPH). Originally researched by GTX Inc., Andarine exhibits tissue-selective anabolic activity, making it a valuable tool in studies involving muscle preservation and skeletal health. S-4 has been characterized by its strong binding affinity to androgen receptors and its ability to activate anabolic pathways in muscle and osseous tissue with reduced activity in reproductive-associated organs. It was also investigated for its potential to partially suppress prostate growth without reducing muscle mass — a unique profile among SARMs.

Key research findings on S-4 (Andarine) include:

• Preservation of skeletal muscle mass under catabolic conditions (e.g., caloric deficit, mechanical unloading) in preclinical models
• Enhancement of contractile performance and fatigue resistance observed in rodent muscle function assays
• Positive modulation of bone mineral density and trabecular microarchitecture in androgen-deficient animal studies
• Exhibits partial agonist activity at androgen receptors, potentially resulting in attenuated hypothalamic-pituitary-gonadal (HPG) axis suppression compared to full agonists in vivo
• Dose-dependent alterations in visual perception reported in animal models, including photopic sensitivity shifts and chromatic distortion; effects reversible upon compound withdrawal

Due to its balance of anabolic effects and minimal androgenic influence, S-4 is often researched as a milder alternative to more suppressive compounds in the SARM category.

CAS Number: 401900-40-1
Molecular formula: C19H18F3N3O6
Purity: ≥99% (see HPLC and COA documentation)
Concentration: 25 mg
Molar mass: 441.36 g/mol
Half-life: ~4–6 hours (often dosed in split administrations in studies)

⚠ Important Note: This product is supplied strictly for laboratory research use only. It is not approved for human consumption or therapeutic use. Not intended to diagnose, treat, cure, or prevent any disease.