S 2251 (OTTO) Sodium tert-amylate, 95% Cas 14593-46-5 - used base in the deoxycyanamidation of alcohols. and in the N-cyanation of secondary amines. S 2251 (OTTO) Sodium tert-Amylate, 95% Cas 14593-46-5 - used in the preparation of complex reducing agents to reduce 1-halonaphthalenes and substituted halobenzenes to corresponding naphthalenes and benzenes.