The 2-Pyrrolidone-5-carboxylic acid sodium salt, with the CAS registry number 54571-67-4 and EINECS registry number 259-234-9, has the systematic name of sodium (2S)-5-oxopyrrolidine-2-carboxylate. It is a kind of clear colorless solution. And the molecular formula of the chemical is C₅H₇NNaO₃. While dealing with this chemical, you had better avoid contact with skin and eyes.

The characteristics of 2-Pyrrolidone-5-carboxylic acid sodium salt are as followings: (1)ACD/LogP: -2.39; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -4.43; (4)ACD/LogD (pH 7.4): -5.92; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 4; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 57.61 Å²; (13)Flash Point: 227.8 °C; (14)Enthalpy of Vaporization: 78.09 kJ/mol; (15)Boiling Point: 453.1 °C at 760 mmHg; (16)Vapour Pressure: 1.79E-09 mmHg at 25°C.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: [Na+].[O-]C(=O)[C@H]1NC(=O)CC1
(2)InChI: InChI=1/C5H7NO3.Na/c7-4-2-1-3(6-4)5(8)9;/h3H,1-2H2,(H,6,7)(H,8,9);/q;+1/p-1/t3-;/m0./s1
(3)InChIKey: CRPCXAMJWCDHFM-SYBSRVMOBU