Folin's reagent
Folin's reagent is 1,2-naphthoquinone-4-sulfonate and is a chemical reagent used to measure levels of amines and amino acids.[1] The reagent produces a bright red color in alkaline solutions and is also fluorescent.[2]
This should not be confused with Folin-Ciocalteu reagent, which is a mixture of sodium tungstate and sodium molybdate that is used to detect phenolic compounds.
References
- ↑ Saurina J, Hernández-Cassou S (1994). "Determination of amino acids by ion-pair liquid chromatography with post-column derivatization using 1,2-naphthoquinone-4-sulfonate". Journal of chromatography. A. 676 (2): 311–9. PMID 7921184.
- ↑ Kobayashi Y, Kubo H, Kinoshita T (1987). "Fluorometric determination of guanidino compounds by new postcolumn derivatization system using reversed-phase ion-pair high-performance liquid chromatography". Anal. Biochem. 160 (2): 392–8. PMID 3578768.
External links
- Sodium 1,2-naphthoquinone-4-sulfonate Sigma-Aldrich datasheet.
- PubChem database