S4 Powder (Andarine)

Buy S4 Powder (Andarine) – Premium Research SARM

Buy S4 Powder (Andarine / GTx-007) is a pioneering selective androgen receptor modulator (SARM) known for its strong anabolic effects on muscle and bone tissue combined with unique tissue-selective properties. Originally developed for muscle wasting, osteoporosis, and prostate health research, S4 stands out for its ability to promote lean mass gains while providing notable fat-loss and hardening effects in laboratory models. Supplied as high-purity freebase powder, it remains a valuable compound for advanced SARM and selective androgen pathway studies.

Key Features & Benefits

• Potent anabolic activity with excellent muscle-building potential
• Promotes fat loss and muscle hardening in research models
• High selectivity for muscle and bone with reduced impact on prostate
• Fine, stable powder for precise volumetric dosing
• Ideal for comparative SARM research and body composition studies

Product Specifications

• Chemical name: S4 (Andarine / GTx-007)
• Appearance: Pale yellow to off-white fine crystalline powder
• Form: Freebase
• Molecular formula: C₁₉H₁₈F₃N₃O₆
• Molecular weight: 441.36 g/mol
• CAS number: 401900-40-1
• Storage: Airtight container, cool (2–8°C), dark, dry place

Applications & Usage

S4 Powder is sold exclusively for legitimate in-vitro and laboratory research, including:

• Androgen receptor binding affinity and functional assays
• Muscle hypertrophy, fat loss, and body recomposition studies
• Bone density and osteoporosis research models
• Comparative pharmacology versus Ostarine, LGD-4033, and RAD-140
• Analytical reference standard preparation Strictly not for human consumption.

Purity & Testing

Every batch undergoes independent third-party laboratory verification:

• Purity ≥98% (HPLC)
• Identity confirmed via NMR and/or LC-MS
• Residual solvents & heavy metals below trace limits
• Full Certificate of Analysis (CoA) available upon request

Safety & Handling

Wear appropriate PPE (nitrile gloves, safety goggles, lab coat). Handle only in a fume hood to avoid inhalation, skin contact, or ingestion. Avoid exposure to strong oxidizers or moisture. Store securely and dispose according to local hazardous chemical waste regulations.

Global Shipping & Discreet Delivery

• Express international shipping (3–10 business days average)
• Stealth packaging: vacuum-sealed inner bag inside neutral outer packaging
• No chemical names, labels, or suspicious markings on exterior
• Full tracking number provided for every order
• Reship / replacement policy for documented customs seizures (country-specific restrictions apply)

Why Choose Chemical Center?

• Consistently high purity with transparent third-party testing
• Specialized selection of classic and advanced SARMs
• Professional, researcher-focused support
• Secure encrypted ordering platform
• Trusted global supplier of research compounds since 2015

Legal & Safety Notice

S4 (Andarine) is a research chemical only and is not approved for human or veterinary consumption. It is controlled or prohibited in many jurisdictions and may fall under analogue laws. It is the buyer’s sole responsibility to confirm compliance with all applicable local, national, and international regulations before ordering. Chemical Center supplies exclusively for legitimate scientific research purposes and reserves the right to refuse any order suspected of non-research intent.

Frequently Asked Questions

Q: How does S4 compare to Ostarine (MK-2866)? S4 is more potent for fat loss and muscle hardening, while Ostarine offers milder effects with better overall tolerability in research models.

Q: Is this freebase or a salt? This is high-purity freebase powder. Other salt forms are available separately upon request.

Q: Do you provide Certificates of Analysis? Yes — a complete third-party CoA is available for every batch upon request.

Q: What is the recommended storage? Store in an airtight container in a refrigerator (2–8°C), protected from light and moisture. Freezer storage is acceptable if properly sealed.

Research use only. Not for human consumption.