Synonyms: Benzeneaceticacid, a-[(3-methoxy-1-methyl-3-oxo-1-propenyl)amino]-,monosodium salt, (R)-; Benzeneacetic acid, a-[(3-methoxy-1-methyl-3-oxo-1-propenyl)amino]-,monosodium salt, (aR)- (9CI); Crotonic acid, 3-[(a-carboxybenzyl)amino]-, 1-methyl ester, monosodium salt, D-(-)- (8CI);Sodium N-(2-methoxycarbonyl-1-methylvinyl)-D-2-amino-2-phenylacetate; SodiumN-[1-methyl-2-carbomethoxyvinyl]-D(-)-a-aminophenylacetate