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S-23

Cat. No. M14621
S-23 Structure
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Biological Activity

S-23 is an orally active selective androgen receptor modulator (SARM) with a Ki of 1.7 nM. S-23 induces androgen receptor (AR)-mediated transcriptional activation in CV-1 cells. S-23 increases prostate, seminal vesicle, and levator ani muscle weights in castrated rats.

Chemical Information
Molecular Weight 416.75
CAS Number 1010396-29-8
Solubility (25°C) DMSO 90 mg/mL
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] Alice Ameline, et al. In vitro characterization of S-23 metabolites produced by human liver microsomes, and subsequent application to urine after a controlled oral administration

[2] Katy Daz, et al. Exogenous Application of Brassinosteroid 24-Norcholane 22( S)-23-Dihydroxy Type Analogs to Enhance Water Deficit Stress Tolerance in Arabidopsis thaliana

[3] Yat-Ming So, et al. Metabolic studies of selective androgen receptor modulators RAD140 and S-23 in horses

[4] Philipp Stegmeier, et al. Thrombocytopenia after implantation of the Perceval S aortic bioprosthesis

[5] O Boutaud, et al. Preferential cyclization of 2,3(S):22(S),23-dioxidosqualene by mammalian 2,3-oxidosqualene-lanosterol cyclase

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