Levonorgestrel CAS NO.: 797-63-7 Анализ: 99% Молекулярная формула: C21H28O2 Molecular Weight: 312.45 Quality Standard: Внешний вид Фармакопеи США: White or almost white crystalline powder Usage: Progesterone drug, used for irregular menstruation, functional uterine bleeding, endometriosis, и т. д.