Ullipristal acetate is
Refer Harrinson 19/e p 2391 Ullipristal is a selective progesterone receptor modulator like mifepristone It is used as an emergency contraceptive that can be used within 120 hours of unprotected intercourse
GnRH agonist
Androgen antagonist
Selective estrogen receptor modulator
Selective progesterone receptor modulator
Endocrinology