Home2-(tert-Butylcarbonyl)-1,2,3,4-tetrahydrobenzo[b][1,6]naphthyridine-10-carboxylic acid2-(tert-Butylcarbonyl)-1,2,3,4-tetrahydrobenzo[b][1,6]naphthyridine-10-carboxylic acid 95+%
