letrozole

cas no.: 112809-51-5

intermediates of letrozole

2,2-(5-methyl-1,3-phenylene)-bis-(2-methyl-propionitrile)

cas  no.: 120511-72-0

3,5-Bis(1-cyano-1-methylethyl)Bromomethyl Benzene

cas no.: 120511-84-4