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1417158-14-5

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1417158-14-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1417158-14-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,1,7,1,5 and 8 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1417158-14:
(9*1)+(8*4)+(7*1)+(6*7)+(5*1)+(4*5)+(3*8)+(2*1)+(1*4)=145
145 % 10 = 5
So 1417158-14-5 is a valid CAS Registry Number.

1417158-14-5Relevant articles and documents

Photochromism of a merocyanine dye bound to sulfonatocalixarenes: Effect of ph and the size of macrocycle on the kinetics

Miskolczy, Zsombor,Biczók, László

, p. 648 - 653 (2013/03/14)

The effect of 1:1 complex formation on the photochromic behavior of the merocyanine isomer of a nitro-substituted spirobenzopyran dye was studied in aqueous solution using 4-sulfonatocalixarene (SCXn) cavitands possessing four or eight phenol units. The binding constants were independent of the size of the macrocycle, and about 7-fold more stable associates were produced at pH 2.3 than in slightly alkaline solution. The complexation with SCXn diminished the acidity of protonated merocyanine (trans-MCH+) and precluded its photoinitiated transition to spirobenzopyran form, but did not affect the reactions in basic media. Upon exposure to light, the complexed trans-MCH + was converted to cis isomer. The association with 4-sulfonatocalix[4]arene slowed down the thermal back reaction in the dark to a larger extent than the confinement to 4-sulfonatocalix[8]arene. Both the activation energy and the Arrhenius A factor were significantly larger when the smaller, more rigid macrocycle served as a host.

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