Cas 134293-59-7,5-(2,4,6-triphenyl-N-pyridinio)tropolonate

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Check Digit Verification of cas no

The CAS Registry Mumber 134293-59-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,2,9 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 134293-59:
(8*1)+(7*3)+(6*4)+(5*2)+(4*9)+(3*3)+(2*5)+(1*9)=127
127 % 10 = 7
So 134293-59-7 is a valid CAS Registry Number.

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134293-59-7Relevant academic research and scientific papers

Novel Negative Solvatochromic Betaine Dyes, 5-(2,4,6-Triphenyl-N-pyridinio)tropolonates. Synthesis and Chracterization

Takeshita, Hitoshi,Mori, Akira,Kato, Nobuo,Wada, Eiji,Kanemasa, Shuji,et al.

, p. 721 - 724 (2007/10/02)

5-(2,4,6-Triphenyl-N-pyridinio)tropolonates, troponoid betaine dyes, were prepared.These dyes were negatively solvatochromic and more blue-shifted than ET30 in all of the solvents.The dihedral angle between the pyridinium and the tropolonate rings was larger than that of ET30.

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