S-23
Price on application
S-23 is an orally active, non-steroidal SARM with one of the highest binding affinities to androgen receptors among the SARM class. It has been investigated as a potential male hormonal contraceptive due to its potent suppression of spermatogenesis.
Research Profile
S-23 was developed by GTx Inc. and stands out for its exceptionally high affinity for androgen receptors. In preclinical studies, S-23 has demonstrated significant increases in lean muscle mass and decreases in fat mass, along with marked effects on bone density. Uniquely, S-23 has been researched as a potential male contraceptive due to its dose-dependent ability to suppress spermatogenesis — an effect that was reversible upon cessation. Its potency and full agonist activity make it one of the stronger SARMs, suited for research into body composition, reproductive biology, and androgen receptor pharmacology.
Technical Details
- Chemical Formula
- C18H13ClF4N2O3
- Synonyms
- S-23, GTx-023
- Molecular Weight
- 416.75 g/mol
- CAS Number
- 1010396-29-8
- PubChem ID
- 24892822
- Active Ingredient
- 350mg (10mg per capsule)
- Shelf Life
- 36 months