European Pharmacopoeia (EP) Reference Standard
Synonym(s): L-Pyroglutamic acid; (S)-(−)-2-Pyrrolidone-5-carboxylic acid; (S)-5-Oxo-2-pyrrolidinecarboxylic acid
Empirical Formula: C5H7NO3
Formula Weight: 129.11
Linear Formula: C5H7NO3
MDL Number: MFCD00005272
Melting Point: 160-163 °C(lit.)
Beilstein Registry Number: 82132