89094-50-8Relevant articles and documents
LONG-ACTING CONTRACEPTIVE AGENTS: FURYLALKYLCARBOXYLIC ACID ESTERS OF NORETHISTERONE
Wan, A. S. C.,Ngiam, T. L.,Leung, S. L.,Go, M. L.,Kielczewski, M.,et al.
, p. 321 - 326 (2007/10/02)
5-Methyl- and 5-ethylfurylalkylcarboxylic esters of norethisterone (17α-ethynyl-17β-hydroxyestr-4-en-3-one) were prepared in high yield in the presence of thallous ethoxide.The activities of these compounds as long-acting contraceptive agents have been evaluated.