1-(2-Carboxyethyl)-3-(p-nitrophenyl)urea sodium salt 102-66-9 140-46-5 N-(((4-Nitrophenyl)amino)carbonyl)-beta-alanine monosodium salt N-(p-Nitrophenyl)-N'-(beta-carboxyethyl)urea sodium salt N-(p-Nitrophenylcarbamoyl)-beta-alanine sodium salt Suosan beta-ALANINE, N-((p-NITROPHENYL)CARBAMOYL)-, SODIUM SALT beta-Alanine, N-(((4-nitrophenyl)amino)carbonyl)-, monosodium salt (9CI) p-Nitrophenylcarbamidopropionic acid sodium salt