CAS 51842-70-7 appears in our catalog under these names: 2-(4-Butoxyphenyl)quinoline-4-carboxylic acid, 95%, Cinchocaine Impurity 1, 2-(4-Butoxyphenyl)quinoline-4-carboxylic acid, 97%. Offered by: Combi-blocks, Chemat Brand, AmBeed. Available pack sizes: 1g, 5g, on request.