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143634-89-3

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143634-89-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143634-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,6,3 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 143634-89:
(8*1)+(7*4)+(6*3)+(5*6)+(4*3)+(3*4)+(2*8)+(1*9)=133
133 % 10 = 3
So 143634-89-3 is a valid CAS Registry Number.

143634-89-3Relevant articles and documents

Pyridinium N-Phenoxide Betaines and Their Application to the Characterization of Solvent Polarities, XX Synthesis, Solvatochromism, and Halochromism of Chromoionophoric Crown Ether-Substituted Pyridinium N-Phenolate Betaine Dyes

Reichardt, Christian,Asharin-Fard, Siamak,Schaefer, Gerhard

, p. 23 - 34 (2007/10/02)

Synthesis, negative solvatochromism (Table 1, Figure 1), and negative halochromism (Tables 2-3, Figures 2-3) of the new crown ether-substituted pyridinium N-phenolate betaine dyes 3-6 are described.In contrast to other known chromoionophores, 3-5 exhibit

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