1,2-Naphthoquinone-4-sulfonic acid sodium salt by Research-Lab Fine Chem Industries is a high grade chemical reagent. Also known as Folins reagent, This is a chemical reagent used as a derivatizing agent to measure levels of amines and amino acids. The reagent is available as a powder that is soluble in water and various organic solvents, however insoluble in chloroform. The reagent reacts with amines and amino acids in alkaline conditions to produce a fluorescent material that can be easily detected. CAS No.: 521-24-4 Formula: C10H5NaO3S Quantity Provided: 5 gm per bottle Molecular weight: 260.20 Assay: Min. 97 %1,2-Naphthoquinone-4-sulfonic acid sodium salt is used for the colorimetric determination of amino acids, amines and procaine hydrochloride in pharmaceutical preparations. The Folin reagent can be used along with an acidic secondary reagent to distinguish MDMA and related compounds from PMMA and related compounds. It is also used in the characterization of the fungus, Phanerochaete chrysosporium. Furthemore, it acts as an intermediate in the synthesis of carbohydrate based napthoquinones, which acts as anticancer agents.