Clinical data | |
---|---|
Other names | Zuclomiphene; trans-Clomifene; Transclomiphene; (Z)-Clomifene; ICI-46476; RMI-16312; Zuclomifene citrate; Zuclomiphene citrate |
Routes of administration | Oral |
Identifiers | |
| |
CAS Number | |
PubChem CID | |
ChemSpider | |
UNII | |
KEGG | |
CompTox Dashboard (EPA) | |
Chemical and physical data | |
Formula | C26H28ClNO |
Molar mass | 405.97 g·mol−1 |
3D model (JSmol) | |
| |
|
Zuclomifene (INN; or zuclomiphene (USAN)) is a nonsteroidal selective estrogen receptor modulator (SERM) of the triphenylethylene group that was never marketed.[1][2][3][4] It is one of the two stereoisomers of clomifene, which itself is a mixture of 38% zuclomifene and 62% enclomifene.[4] Zuclomifene is the (Z)-stereoisomer of clomifene, while enclomifene is the (E)-stereoisomer.[1][2] Whereas zuclomifene is described as mildly estrogenic, enclomifene is described as antiestrogenic.[4][5] In accordance, unlike enclomifene, zuclomifene is antigonadotropic due to activation of the estrogen receptor and reduces testosterone levels in men.[4] It is also about five times more potent than enclomifene in inducing ovulation.[5]