Description

Technical Parameters

S23 Core Introduction

Research -grade compound | S23 (selective androgen receptor modulator )

Chemical name : 4-((R)-2-((R)-2,3-dihydro-1H-inden-1-yl)-3-phenylsulfonylaminopropionamido)-4-cyanobenzoic acid

CAS number : 1010396-29-8

Molecular formula : C₂₇H₂₅N₃O₄S

Molecular weight : 487.57

Appearance : White to off-white powder

Core Effects

S23 is a potent selective androgen receptor modulator (SARM) that is widely used for muscle growth, bone density improvement, and scientific research applications due to its high receptor binding affinity and tissue selectivity .

✅ Powerful muscle growth :

High affinity for androgen receptors , promoting protein synthesis

8-12 week cycle can increase muscle mass by 6-9kg (combined with resistance training)

✅ Increase bone density :

Stimulate bone formation and increase bone mineral density

Reduce bone resorption and improve bone health

✅ Tissue selectivity :

Highly selective for muscles and bones , with minimal impact on the prostate

Partial agonist properties , tissue-specific effects

Usage Protocol

1. Dosage regimen :

Muscle growth studies : 10-20 mg/day, single oral dose

Bone improvement study : 5-10mg/day, long-term use

Cycle Length : 8-12 weeks

2. When to take :

Morning on an empty stomach : Best absorption

1 hour before training : Boost your training performance

Once daily : Longer half-life (approximately 24 hours)

3. Cycle support :

Basal PCT : Tamoxifen 10mg/day × 4 weeks (after the cycle)

Testicular support : HCG 500IU/week (for use during the cycle)

Blood lipid protection : Fish oil 3g/day + Coenzyme Q10 200mg/day

4. Monitoring indicators :

Changes in muscle mass : DEXA scan or skinfold measurement

Bone density test : Dual-energy X-ray absorptiometry (DXA)

Blood tests : lipid profile, liver function, testosterone levels

Why choose S23?

One of the most potent SARMs , with significant muscle growth effects

Dual benefits , improving muscle and bone health simultaneously

High research value , research on tissue selectivity mechanism

Quality Assurance :

GMP -compliant production , each batch HPLC purity tested (≥98% )

Third-party laboratory report (COA) is included with the goods

Content uniformity : RSD≤3%

Worldwide Shipping :

Original sealed packaging , moisture-proof and light-proof

Private delivery , no logo on the outer packaging

Temperature -controlled transportation to ensure stability

Conclusion

S23 is a powerful tool for muscle growth and bone health research , particularly suitable for lean body mass gain, osteoporosis research, and tissue-selective mechanism exploration . The recommended dose is 10-20mg/day .

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