... of medicine, dyes, pesticides, daily chemical, paint, heat-resistant resin and so on N-ethyl-pyrrolidone (NEP)1. Formula: C6H11NO2. CAS no ... of medicine, dyes, pesticides, daily chemical, paint, heat-resistant resin and so on.4. Technology IndexMolecular weight104.13Boiling point82-83°C/101 ...