苯達莫司汀中間體

1.Ethyl4-(5-amino-1-methyl-1H-benzo[d]imidazole
-2-yl)butanoate

CAS NO: 3543-73-5

2. 

Ethyl 4-(1-methyl-5-nitro-1H-benzo[d] imidazol-2-yl)butanoate

CAS NO: 3543-72-4

3. 

4-(5-amino-1-methyl-1H-benzimidazol-2-yl)-butyricacid isopropyl ester