Femera (Letrozole) Letrozole (Femara) CAS: 112809-51-5 Assay: 98.0-102.0%. USP32 Packing: 1Kg/foil bag Delivery: Courier. MF: C17H11N5 MW: 285.3 Character: White crystalline powder. MP: 181-183°C Usage: A nonsteroidal aromatase inhibitor structurally related to Fadrozole. Antineoplastic raw materials. For the treatment of breast cancer. Routes: Oral Please contact me if you got any question! bob(at)pharmade (dot)com skype:bob.pharmade