Subheading 292610: Nitrile-function Compounds; Acrylonitrile
Subheading 292620: Nitrile-function Compounds; 1-Cyanoguanidine (Dicyandiamide)
Subheading 292630: Nitrile-function Compounds; Fenproporex (Inn) and its Salts; … etc.
Subheading 292640: Nitrile-function Compounds; Alpha-phenylacetoacetonitrile
Subheading 292690: Nitrile-function Compounds; N.E.C. Heading no. 2926