L-Glutamic acid, sodiumsalt (1:1)

Although traditional Asian cuisine had often used seaweed extract, which contains high concentrations of glutamic acid, MSG was not isolated until 1907. MSG was subsequently patented by Ajinomoto Corporation of Japan in 1909.

Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

The Monosodium Glutamate is an organic compound with the formula C₅H₈NNaO₄. The IUPAC name of this chemical is sodium 2-amino-5-hydroxy-5-oxopentanoate. With the CAS registry number 142-47-2, it is also named as L-Glutamic acid monosodium salt. The product's classification codes are Food additives; Human Data; Mutation data; Reproductive Effect. Besides, it is a white or off-white crystalline powder with a slight peptone-like odor, which should be stored in a closed cool and dry place.

The Monosodium Glutamate is used as a food additive and is commonly marketed as a flavour enhancer. It is acceptable for celiacs following a gluten-free diet. But only the naturally occurring L-glutamate form is used as a flavour enhancer.

Physical properties about Monosodium Glutamate are: (1)ACD/LogP: -1.44; (2)ACD/LogD (pH 5.5): -4.7; (3)ACD/LogD (pH 7.4): -4.93; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 1; (7)ACD/KOC (pH 7.4): 1; (8)#H bond acceptors: 5; (9)#H bond donors: 4; (10)#Freely Rotating Bonds: 5; (11)Polar Surface Area: 66.84 Å²; (12)Flash Point: 155.7 °C; (13)Enthalpy of Vaporization: 63.39 kJ/mol; (14)Boiling Point: 333.8 °C at 760 mmHg; (15)Vapour Pressure: 2.55E-05 mmHg at 25°C.

Preparation: this chemical can be prepared by rice, starch or molasses. Chemical reaction equation is as follows:
(C₆H₁₀O₅)_N[H₂O]→C₆H₁₂O₆[NH₃,O₂] →C₅H₉NO₄[Na₂CO₃] →C₅H₈NNaO₄

You can still convert the following datas into molecular structure:
(1)SMILES: [Na+].O=C([O-])[C@@H](N)CCC(=O)O
(2)InChI: InChI=1/C5H9NO4.Na/c6-3(5(9)10)1-2-4(7)8;/h3H,1-2,6H2,(H,7,8)(H,9,10);/q;+1/p-1/t3-;/m0./s1
(3)InChIKey: LPUQAYUQRXPFSQ-SYBSRVMOBZ
(4)Std. InChI: InChI=1S/C5H9NO4.Na/c6-3(5(9)10)1-2-4(7)8;/h3H,1-2,6H2,(H,7,8)(H,9,10);/q;+1/p-1/t3-;/m0./s1
(5)Std. InChIKey: LPUQAYUQRXPFSQ-DFWYDOINSA-M

The toxicity data is as follows: