Answer:
2,4-Dinitrophenylhydrazine
Step-by-step explanation:
Brady's reagent or Borche's reagent is prepared by dissolving DNPH in a solution containing methanol and some concentrated sulfuric acid. This solution is used to detect ketones and aldehydes. A positive test is signaled by the formation of a yellow, orange, or red precipitate of the dinitrophenylhydrazone