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Clinical data
Other namesN-(2-Chlorophenyl)-3-oxo-4-aza-4-methylandrost-1-en-17α-carboxamide
CAS Number
PubChem CID
Chemical and physical data
Molar mass441.01 g·mol−1
3D model (JSmol)

Cl-4AS-1 is a dual anabolic–androgenic steroid (AAS) and 5α-reductase inhibitor.[1][2] It is a potent and selective full agonist of the androgen receptor (IC50 = 12 nM) and inhibitor of 5α-reductase types I and II (IC50 = 6 and 10 nM, respectively).[1][2] Structurally, Cl-4AS-1 is a 4-azasteroid.[1]

See also


  1. ^ a b c Tolman RL, Sahoo SP, Bakshi RK, Gratale D, Patel G, Patel S, Toney J, Chang B, Harris GS (1997). "4-Methyl-3-oxo-4-aza-5alpha-androst-1-ene-17beta-N-aryl-carboxamides: an approach to combined androgen blockade [5alpha-reductase inhibition with androgen receptor binding in vitro]". J. Steroid Biochem. Mol. Biol. 60 (5–6): 303–9. doi:10.1016/s0960-0760(96)00199-9. PMID 9219921.
  2. ^ a b Schmidt A, Harada S, Kimmel DB, Bai C, Chen F, Rutledge SJ, Vogel RL, Scafonas A, Gentile MA, Nantermet PV, McElwee-Witmer S, Pennypacker B, Masarachia P, Sahoo SP, Kim Y, Meissner RS, Hartman GD, Duggan ME, Rodan GA, Towler DA, Ray WJ (2009). "Identification of anabolic selective androgen receptor modulators with reduced activities in reproductive tissues and sebaceous glands". J. Biol. Chem. 284 (52): 36367–76. doi:10.1074/jbc.M109.049734. PMC 2794752. PMID 19846549.

External links