1. 4-Cyanobenzoic Acid ( CAS No. 619-65-8)
2. Methyl 4-Cyanobenzoate ( CAS No. 1129-35-7)
3. 4-Aminobenzonitrile ( CAS No. 873-74-5 )
4. CDHA for Cilastatin ( CAS No. 877674-77-6)
5. 4-Aminomethylbenzoic acid ( CAS No. 111128-12-2)
6. 4-Cyanoacetophenone ( CAS No. 1443-80-7 )
7. 4-Acetylbenzoic acid ( CAS No.586-89-0)