An active metabolite of norelgestromin and a secondary metabolite of norgestimate.
References
Thomas L. Lemke; David A. Williams; Victoria F. Roche; S. William Zito (24 January 2012). Foye's Principles of Medicinal Chemistry. Lippincott Williams & Wilkins. p. 1403. ISBN 978-1-60913-345-0.
White, T.; Özel, B.; Jain, J. K.; Stanczyk, F. Z. Effects of Transdermal and Oral Contraceptives on Estrogen-Sensitive Hepatic Proteins. Contraception 2006, 74 (4), 293–296.