Folin's reagent

Folin's reagent
IUPAC name

Sodium 3,4-dioxo-3,4-dihydronaphthalene-1-sulfonate
Identifiers
CAS number 521-24-4
PubChem 516996
Jmol-3D images Image 1
Properties
Molecular formula C10H5NaO5S
Molar mass 260.20 g/mol
Hazards
MSDS Oxford MSDS
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Folin's reagent or sodium 1,2-naphthoquinone-4-sulfonate 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

  1. ^ 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. doi:10.1016/0021-9673(94)80431-1. PMID 7921184. 
  2. ^ 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. doi:10.1016/0003-2697(87)90066-2. PMID 3578768.