39180-46-6 5,6-Dihydro-5-methyl-6-oxophenanthridine-3-carboxylic acid 5-22-06-00430 (Beilstein Handbook Reference) Acido 5-metil-6-fenantridon-3-carbossilico [Italian] BRN 0482976 Phenanthridine-3-carboxylic acid, 5,6-dihydro-5-methyl-6-oxo-