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testolactone

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Also known as SQ-9538, Teslac®, (4aS,4bR,10aR,10bS,12aS)-10a,12a-dimethyl-3,4,4a,5,6,10a,10b,11,12,12a-decahydro-2H-naphtho[2,1-f]chromene-2,8(4bH)-dione, 1,2-didehydrotestololactone, 1-dehydrotestololactone, Delta(1)-testololactone, 13-hydroxy-3-oxo-13,17-secoandrosta-1,4-dien-17-oic acid delta-lactone, D-homo-17a-oxaandrosta-1,4-diene-3,17-dione

Testolactone (, ) (brand name Teslac) is a non-selective, irreversible, steroidal aromatase inhibitor which is used as an antineoplastic drug to treat advanced-stage breast cancer. The drug was discontinued in 2008 and is no longer available for medical use.

Wikidata facts

Mass
300.172545
Show 4 more facts
chemical formula
C₁₉H₂₄O₃
canonical SMILES
CC12CCC3C(C1CCC(=O)O2)CCC4=CC(=O)C=CC34C
isomeric SMILES
C[C@]12CC[C@H]3[C@H]([C@@H]1CCC(=O)O2)CCC4=CC(=O)C=C[C@]34C
Commons category
Testolactone
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7 sections
Contents
  • Medical uses
  • Available forms
  • Side effects
  • Pharmacology
  • Chemistry
  • History
  • References

Testolactone (, ) (brand name Teslac) is a non-selective, irreversible, steroidal aromatase inhibitor which is used as an antineoplastic drug to treat advanced-stage breast cancer. The drug was discontinued in 2008 and is no longer available for medical use.

==Medical uses== Testolactone is mainly used for treating various types of breast cancer in women who have been through menopause or whose ovaries no longer function. It works by blocking the production of estrogens, which helps prevent the growth of breast cancers that are stimulated by estrogens. It may also prevent tumor cells from being activated by other hormones. Testolactone has also been used to postpone precocious puberty because of its ability to block estrogen production. In addition, it has been used in the treatment of gynecomastia.

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