2638-94-0 4,4'-Azobis[4-cyanopentanoic acid] 4,4'-Azobis[4-cyanovaleric acid] Azobis(cyanovaleric acid) NSC114466 Pentanoic acid, 4,4'-azobis[4-cyano- Valeric acid, 4,4'-azobis[4-cyano- cis-4,4'-Azobis(4-cyanovaleric acid)