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1291090-23-7

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1291090-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1291090-23-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,1,0,9 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1291090-23:
(9*1)+(8*2)+(7*9)+(6*1)+(5*0)+(4*9)+(3*0)+(2*2)+(1*3)=137
137 % 10 = 7
So 1291090-23-7 is a valid CAS Registry Number.

1291090-23-7Downstream Products

1291090-23-7Relevant articles and documents

Syntheses and characterizations of novel pyrrolocoumarin probes for SNAP-tag labeling technology

Mei, De-Sheng,Qu, Yi,He, Jin-Xiang,Chen, Lei,Yao, Zhu-Jun

, p. 2251 - 2259 (2011/04/22)

SNAP-tag technology is a revolutionary protein labeling technology employing in various biological studies. Since low signal/noise ratio and severe overlap between the FRET donors/acceptors often occurred in applying present fluorescent probes and thus limited the further applications, development of new fluorescent probes with excellent fluorescent properties is still of request by today's SNAP-tag technology. In this paper, a number of SNAP-tag protein probes have been developed by incorporating a novel pyrrolocoumarin fluorophore recently developed by our group. Examination of these novel synthetic compounds shows all these materials possess satisfactory fluorescent properties. Among these, probe 7 exhibits the most excellent characters, and its quantum yield, maximum emission wavelength and Stocks shift reach to 0.44, 534 nm and 112 nm, respectively. Further analysis of structure-property relationship indicates that the probes with a longer C3-substituted alkyl (such as pentyl) give stronger fluorescence.

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