Formulation: A crystalline solid
Formal Name: (17β)-17-hydroxy-17-(2-propen-1-yl)-estra-4,9,11-trien-3-one
Purity: ≥98%
Formula Markup: C21H26O2
Formula Weight: 310,4
Shelf life (days): 1460
CAS Number: 850-52-2
Notes: Altrenogest is a synthetic progestin and an agonist of progesterone and androgen receptors (EC50s = 0.64 and 0.63 nM, respectively, in S. cerevisiae cells expressing human receptors).{40099} In vivo, altrenogest (20 mg/animal per day) reduces testicular weight, sperm content, and serum levels of luteinizing hormone and testosterone in boars.{47440} Altrenogest (0.044 mg/kg) increases serum concentrations of equine chorionic gonadotropin and embryonic size in pregnant mares.{47441} It also decreases genital perfusion and increases estrus cycle length in mares.{47442} Formulations containing altrenogest have been used to synchronize estrus in horses and pigs.