S-4 (Andarine) Capsules

A. Introduction

S-4 (Andarine) is a significant compound in the history of SARM development. It was one of the first non-steroidal ligands to demonstrate a high level of tissue selectivity. It remains a primary reference standard for research institutions studying the activation of androgen receptors in bone and muscle tissues relative to androgenic organs.

B. Scientific Overview

Chemically identified as (S)-3-(4-acetylamino-phenoxy)-2-hydroxy-2-methyl-N-(4-nitro-3-trifluoromethyl-phenyl)-propionamide ($C_{19}H_{18}F_{3}N_{3}O_{6}$), S-4 is a partial agonist of the androgen receptor. In a laboratory context, researchers focus on its ability to promote anabolic activity while maintaining a high degree of selectivity. It is frequently used in comparative studies to measure the binding affinity of newer SARM analogues.

C. Product Specifications

• Form: Encapsulated powder for laboratory measurement
• Active Concentration: 25mg per unit
• Chemical Class: Substituted Propanamide / SARM
• Molecular Formula: $C_{19}H_{18}F_{3}N_{3}O_{6}$
• Purity: ≥99% (HPLC Verified)
• Quantity: Available in standard laboratory counts
• Storage: Store in a cool, dry environment (15°C to 25°C) protected from direct sunlight and moisture.

D. Laboratory Use Context

S-4 capsules are provided exclusively for in-vitro research and analytical testing. They are a critical reagent for:

• Investigating tissue-selective androgen receptor modulation in cell cultures.
• Studying the structural biology of the quinoline-based scaffold.
• Calibration and validation of LC-MS/MS and GC-MS equipment.
• Forensic toxicology and structural analysis of trifluoromethylated ligands.

E. Quality Testing

• Analytical Precision: Each batch undergoes rigorous HPLC analysis to confirm chemical purity and 25mg concentration accuracy per capsule.
• Structural Identity: Mass Spectrometry (MS) and Proton NMR verify the presence of the nitro and trifluoromethyl structural components.
• Batch Consistency: Manufactured under strict laboratory protocols to ensure reproducible results for long-term longitudinal studies.

F. Shipping Handling

Our S-4 capsules are dispatched in high-barrier, moisture-proof, and UV-protected packaging to maintain the chemical stability of the compound during transit. We provide professional, discreet worldwide shipping to support the requirements of international research facilities and commercial laboratories.

G. Compliance Disclaimer (CLEAR PROMINENT)

FOR RESEARCH USE ONLY. NOT FOR HUMAN CONSUMPTION. This product is a research chemical and is strictly for in-vitro laboratory applications and analytical testing. It is not intended for diagnostic or therapeutic use in humans or animals. No medical claims or dosages are provided. The purchaser assumes all responsibility for compliance with local and international regulations regarding the acquisition and handling of this substance.