United States Pharmacopeia (USP) Reference Standard
Synonym(s): 4,4-Pentamethylene-2-pyrrolidinone; 3-Azaspiro[4.5]decan-2-one
Empirical Formula: C9H15NO
Formula Weight: 153.22
Linear Formula: C9H15NO
MDL Number: MFCD00177938
Melting Point: 84-89 °C(lit.)