1-(5,8-Dihydro-5,8-dioxo-2-quinolinyl)-9H-pyrido(3,4-b)indole-3-carboxylic acid methyl ester 104145-44-0 9H-Pyrido(3,4-b)indole-3-carboxylic acid, 1-(5,8-dihydro-5,8-dioxo-2-quinolinyl)-, methyl ester BRN 5642096 CCRIS 3207 Desaminodesmethyllavendamycin methyl ester