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-, 2-(aminocarbonyl)hydrazide 99520-40-8 AIDS-000091 AIDS000091 STN-NHNHCONH2 Streptonigrin amidohydrazide Streptonigrin analog