CAS 797-63-7 appears in our catalog under these names: D-(-)-Norgestrel (Levonorgestrel), Levonorgestrel, D-(-)-Norgestrel, >95% (HPLC), Levonorgestrel 100 µg/mL in Acetonitrile, (-)-Norgestrel, >98.0%(HPLC)(T). Offered by: Chemat Brand, Hubei YoungXin, TRC, Mikromol, LoGiCal. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg, 500mg, 250mg.