Alias：
1-Piperidinyloxy,4-carboxy-2,2,6,6-tetramethyl-;4-Carboxy-2,2,6,6-tetramethylpiperidine 1-Oxyl Free Radical;1-oxyl-2,2,6,6-tetramethylpiperidin-4-carboxylic acid radical;4-Carboxy-2,2,6,6-tetramethylpiperidine 1-oxyl;4-Carboxy-2,2,6,6-tetramethylpiperidinyloxy,free radical;4-Carboxy-TEMPO;4-Carboxy-TEMPO Free Radical;4-COOH-TEMPO;carboxy-TEMPO;Tca meglumine;Tempo carboxylate;Tempo carboxylic acid;4-Carboxy-2,2,6,6-tetramethyl-1-piperidinyloxy;4-Carboxy-2,2,6,6-tetramethylpiperidine-1-oxyl;4-Carboxy-2,2,6,6-tetramethylpiperidinyloxy;4-Carboxyl-2,2,6,6-tetramethylpiperidin-1-oxyl;4-Carboxytetramethyl-1-piperidinyloxyl;Tempacid;Tempcarboxylate;TEMPO;1-λ1-oxidanyl-2,2,6,6-tetramethylpiperidine-4-carboxylic acid
