2,4-Dichlorobenzoic acid is used as reagent during the synthesis. It is also used as starting reagent during the synthesis of 1-(substituted)-1,4-dihydro-6-nitro-4-oxo-7-(sub-secondary amino)-quinoline-3-carboxylic acids.
D 1505 (OTTO) 2,4-Dichlorobenzoic acid, 98% Cas 50-84-0 - used in solid-phase extraction and gas chromatographic determination of polar acidic herbicides in surface water.