Pyrrolidinones

**Definition:** A group of compounds that are derivatives of oxo-pyrrolidines. A member of this group is 2-oxo pyrrolidine, which is an intermediate in the manufacture of polyvinylpyrrolidone. (From Merck Index, 11th ed)

**Tree numbers:** - D03.383.773.812

**Synonyms:** - Pyrrolidone - Pyrrolidinone - Pyrrolidones