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690958-93-1

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690958-93-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 690958-93-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,9,5 and 8 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 690958-93:
(8*6)+(7*9)+(6*0)+(5*9)+(4*5)+(3*8)+(2*9)+(1*3)=221
221 % 10 = 1
So 690958-93-1 is a valid CAS Registry Number.

690958-93-1Relevant articles and documents

Diaroyl(methanato)boron Difluoride Compounds as Medium-Sensitive Two-Photon Fluorescent Probes

Cogne-Laage, Emmanuelle,Allemand, Jean-Francois,Ruel, Odile,Baudin, Jean-Bernard,Croquette, Vincent,Blanchard-Desce, Mireille,Jullien, Ludovic

, p. 1445 - 1455 (2007/10/03)

This paper evaluates the use of diaroyl(methanato)boron difluoride compounds for designing efficient fluorescent probes through two-photon absorption. Three different pathways allowing for the syntheses of symmetrical and dissymmetrical molecules are reported. The stable diaroyl(methanato)-boron difluoride derivatives can be easily obtained in good yields. They exhibit a large one-photon absorption that is easily tuned in the near-UV range. Their strong fluorescence emission covers the whole visible domain. In addition to these attractive linear properties, several diaroyl(methanato)-boron difluoride derivatives possess significant cross sections for two-photon absorption. The derived structure-property relationships are promising for designing new generations of molecules relying on the diaroyl(methanato)boron difluoride backbone.

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