Dansyl amide

Dansyl amide
Names
	Preferred IUPAC name 5-(Dimethylamino)naphthalene-1-sulfonamide
	Other names Dansyl amide
Identifiers
CAS Number	1431-39-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	58587 ;
ECHA InfoCard	100.014.413
PubChem CID	65077;
UNII	ZUZ5S5875E ;
CompTox Dashboard (EPA)	DTXSID70162306 ;
	InChI InChI=1S/C12H14N2O2S/c1-14(2)11-7-3-6-10-9(11)5-4-8-12(10)17(13,15)16/h3-8H,1-2H3,(H2,13,15,16) Key: TYNBFJJKZPTRKS-UHFFFAOYSA-N ; InChI=1/C12H14N2O2S/c1-14(2)11-7-3-6-10-9(11)5-4-8-12(10)17(13,15)16/h3-8H,1-2H3,(H2,13,15,16) Key: TYNBFJJKZPTRKS-UHFFFAOYAD;
	SMILES O=S(=O)(c1cccc2c1cccc2N(C)C)N;
Properties
Chemical formula	C12H14N2O2S
Molar mass	250.31676
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Dansyl amide is a fluorescent dye that forms in a reaction between dansyl chloride and ammonia. It is the simplest representative of the class of dansyl derivatized amines, which are widely used in biochemistry and chemistry as fluorescent labels.^[1] The dansyl amide moiety is also called a dansyl group, and it can be introduced into amino acids or other amines in a reaction with dansyl chloride.^[2] The dansyl group is highly fluorescent, and it has a very high Stokes shift. The excitation maximum (ca 350 nm) is essentially independent on the medium, whereas the emission maximum strongly depends on the solvent and varies from 520 to 550 nm.^[3]

References

^ Misra A, Tripathi S, Misra K (2000). "Fluorescent labelling of ribonucleosides at 2'-terminus; comparative fluorescence studies". Nucleic Acids Symp. Ser. 44 (44): 291–2. doi:10.1093/nass/44.1.291. PMID 12903383.
^ Tapuhi Y, Schmidt DE, Lindner W, Karger BL (July 1981). "Dansylation of amino acids for high-performance liquid chromatography analysis". Anal. Biochem. 115 (1): 123–9. doi:10.1016/0003-2697(81)90534-0. PMID 7304940.
^ Makoto Asano, Frangoise M.Winnik, Takashi Yamashita, and Kazuyuki Horief. Fluorescence Studies of Dansyl-Labeled Poly(iV-isopropylacrylamide)Gels and Polymers in Mixed Water/Methanol Solutions. Macromolecules, 1995, 28, 5861—5866.

[1] Misra A, Tripathi S, Misra K (2000). "Fluorescent labelling of ribonucleosides at 2'-terminus; comparative fluorescence studies". Nucleic Acids Symp. Ser. 44 (44): 291–2. doi:10.1093/nass/44.1.291. PMID 12903383.

[2] Tapuhi Y, Schmidt DE, Lindner W, Karger BL (July 1981). "Dansylation of amino acids for high-performance liquid chromatography analysis". Anal. Biochem. 115 (1): 123–9. doi:10.1016/0003-2697(81)90534-0. PMID 7304940.

[3] Makoto Asano, Frangoise M.Winnik, Takashi Yamashita, and Kazuyuki Horief. Fluorescence Studies of Dansyl-Labeled Poly(iV-isopropylacrylamide)Gels and Polymers in Mixed Water/Methanol Solutions. Macromolecules, 1995, 28, 5861—5866.

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