2-Pyridinecarboxylic acid, 5-amino-6-(7-amino-5,8-dihydro-6-methoxy-5,8-dioxo-2-quinolinyl)-4-(2-hydroxy-3,4-dimethoxyphenyl)-3-methyl-, methyl ester 3398-48-9 AI3-52460 BRN 5324543 MES MES (VAN) Methyl ester streptonigrin Methyl streptonigrin NSC 45384 NSC-45384 Picolinic acid, 5-amino-6-(7-amino-5,8-dihydro-6-methoxy-5,8-dioxo-2-quinolyl)-4-(2-hydroxy-3,4-dimethoxyphenyl)-3-methyl-, methyl ester STREPTONIGRIN METHYL ESTER