S-23 (10mg/capsule), 60 Capsules

S-23 (Mastorin) is a propanamide-class non-steroidal selective androgen receptor modulator (SARM) with high-affinity androgen receptor (AR) binding characteristics. It functions as an AR agonist and has been extensively investigated in studies of receptor binding dynamics, ligand-receptor interactions, transcriptional regulation, and AR-mediated signaling mechanisms. Among non-steroidal SARMs, S-23 is recognized for its strong receptor affinity and well-characterized interaction profile, making it a valuable research tool for comparative androgen receptor pharmacology. Research applications include AR agonism studies, receptor selectivity investigation, androgen receptor signaling research, structure-activity relationship analysis, and mechanistic evaluation of non-steroidal androgen receptor modulators.