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Nα-dansyl-L-arginine, also known as dansyl-arginine, is a synthetic derivative of the amino acid L-arginine. In Nα-dansyl-L-arginine, the guanidinium group of L-arginine is modified with a dansyl group, which is a fluorescent tag. The dansyl group is a chromophore that emits fluorescence when excited by light, making it useful in various biochemical assays and as a probe in fluorescence spectroscopy. This modification allows for the detection and quantification of enzymes that cleave the peptide bond adjacent to the arginine residue, such as proteases. The dansyl group's fluorescence is quenched when it is part of the peptide bond, but upon cleavage by an enzyme, the dansyl group is released and its fluorescence is restored, which can be measured to determine enzyme activity. This property makes Nα-dansyl-L-arginine a valuable tool in research and diagnostics, particularly in the study of proteolytic enzymes and their inhibitors.

4307-78-2

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4307-78-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4307-78-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,3,0 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4307-78:
(6*4)+(5*3)+(4*0)+(3*7)+(2*7)+(1*8)=82
82 % 10 = 2
So 4307-78-2 is a valid CAS Registry Number.

4307-78-2Downstream Products

4307-78-2Relevant academic research and scientific papers

Thrombin inhibitors. I. Ester derivatives of N(α)-(arylsulfonyl)-L-arginine

Okamoto,Kinjo,Hijikata,et al.

, p. 827 - 830 (2007/10/02)

A series of N(α)(arylsulfonyl)-L-arginine esters was prepared and tested as inhibitors of the clotting activity of thrombin. N (α)Dansyl-L-arginine methyl ester was the most inhibitory of the N (α)(arylsulfonyl)-L-arginine methyl esters. The most potent inhibitors were the n-propyl and n-propyl esters of N(α)-dansyl-L-arginine with an I(50) of 2 x 10(-6) M. Esters of unsaturated straight-chain alcohols with a chain length of four carbons were also as inhibitory as the n-butyl ester. The inhibitors were hydrolyzed by thrombin and trypsin more slowly than N (α)-tosyl-L-arginine methyl ester.

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