1.0 2010-04-08 22:09:21 UTC 2025-11-18 23:22:43 UTC FDB010881 Monosodium glutamate Food flavour enhancer Monosodium glutamate, also known as sodium glutamate or MSG, is the sodium salt of glutamic acid, one of the most abundant naturally occurring non-essential amino acids. It has been classified by the U.S. Food and Drug Administration as generally recognized as safe (GRAS) and by the European Union as a food additive. MSG has the HS code 29224220 and the E number E621. The glutamate of MSG confers the same umami taste of glutamate from other foods, being chemically identical. Industrial food manufacturers market and use MSG as a flavor enhancer because it balances, blends and rounds the total perception of other tastes. Trade names of monosodium glutamate include AJI-NO-MOTO®, Vetsin, and Ac'cent. [Wikipedia]. α-monosodium glutamate Accent Ajinomoto Chinese seasoning E621 Glutacyl Glutamic acid, monosodium salt Glutamic acid, monosodium salt, l- Glutamic acid, monosodium salt, l-(+)- Glutamic acid, sodium salt Glutavene L-(+)-sodium glutamate L-glutamic acid, monosodium salt L-glutamic acid, sodium salt Monosodium glutamate Monosodium l-glutamate MSG RL-50 Sodium glutamate Sodium hydrogen glutamate Sodium l-glutamate Vetsin ZEST C5H8NNaO4 169.1111 169.035102424 sodium 2-amino-4-carboxybutanoate sodium 2-amino-4-carboxybutanoate 142-47-2 [Na+].NC(CCC(O)=O)C([O-])=O 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 LPUQAYUQRXPFSQ-UHFFFAOYSA-M belongs to the class of organic compounds known as glutamic acid and derivatives. Glutamic acid and derivatives are compounds containing glutamic acid or a derivative thereof resulting from reaction of glutamic acid at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. Glutamic acid and derivatives Organic compounds Organic acids and derivatives Carboxylic acids and derivatives Amino acids, peptides, and analogues Aliphatic acyclic compounds Alpha amino acids Amino acids Amino fatty acids Carbonyl compounds Carboxylic acid salts Carboxylic acids Dicarboxylic acids and derivatives Hydrocarbon derivatives Monoalkylamines Organic oxides Organic sodium salts Organic zwitterions Organopnictogen compounds Aliphatic acyclic compound Alpha-amino acid Amine Amino acid Amino fatty acid Carbonyl group Carboxylic acid Carboxylic acid salt Dicarboxylic acid or derivatives Fatty acid Fatty acyl Glutamic acid or derivatives Hydrocarbon derivative Organic alkali metal salt Organic nitrogen compound Organic oxide Organic oxygen compound Organic salt Organic sodium salt Organic zwitterion Organonitrogen compound Organooxygen compound Organopnictogen compound Primary aliphatic amine Primary amine organic sodium salt logp -2.82 ALOGPS logs 0.29 ALOGPS solubility 3.31e+02 g/l ALOGPS melting_point 225 °C, 498 K, 437 °F logp -3.2 ChemAxon pka_strongest_acidic 1.88 ChemAxon pka_strongest_basic 9.54 ChemAxon iupac sodium 2-amino-4-carboxybutanoate ChemAxon average_mass 169.1111 ChemAxon mono_mass 169.035102424 ChemAxon smiles [Na+].NC(CCC(O)=O)C([O-])=O ChemAxon formula C5H8NNaO4 ChemAxon 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 ChemAxon inchikey LPUQAYUQRXPFSQ-UHFFFAOYSA-M ChemAxon polar_surface_area 103.45 ChemAxon refractivity 42.12 ChemAxon polarizability 13.02 ChemAxon rotatable_bond_count 4 ChemAxon acceptor_count 5 ChemAxon donor_count 2 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1276369 Specdb::MsMs 1276370 Specdb::MsMs 1276371 Specdb::MsMs 1391302 Specdb::MsMs 1391303 Specdb::MsMs 1391304 bland peptone