Synonyms: [4-({5-[(3-carboxypropyl)amino]-2,4-dinitrophenyl}amino)-2,2,6,6-tetramethylpiperidin-1-yl]oxidanyl;63677-34-9;AC1L4SZO;AC1Q2CX0;KST-1A7882;AR-1A8947;1-gamma-Aminobutyrate-5-N-(1-oxyl-2,2,6,6-tetramethyl-4-aminopiperidinyl)-2,4-dinitrobenzene;1-Piperidinyloxy, 4-((5-((3-carboxypropyl)amino)-2,4-dinitrophenyl)amino)-2,2,6,6-tetramethyl-