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496839-75-9

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496839-75-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 496839-75-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,6,8,3 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 496839-75:
(8*4)+(7*9)+(6*6)+(5*8)+(4*3)+(3*9)+(2*7)+(1*5)=229
229 % 10 = 9
So 496839-75-9 is a valid CAS Registry Number.

496839-75-9Relevant articles and documents

Intramolecular photocycloaddition of anthracene and benzene ring systems

Cao, Derong,Dobis, Silvia,Meier, Herbert

, p. 6853 - 6855 (2002)

The anthracenes 3a-c, substituted in the 9-position with 3,5-dialkoxybenzyloxymethyl groups exhibit, in diluted solutions, intramolecular [4π+4π] photocycloaddition reactions to the polycyclic compounds 4a-c. The quantitative processes are completely reversible by heating, unless acid-catalyzed cleavages lead to thermally stable mono- and diketones: 4a-c→5a-c→6.

Optical switching and antenna effect of dendrimers with an anthracene core

Cao, Derong,Dobis, Silvia,Gao, Chunmei,Hillmann, Sabine,Meier, Herbert

, p. 9317 - 9323 (2008/12/20)

Dendrimers 6Gi (i=1-4) consisting of an anthracene core and Frechet dendrons which are attached via a CH2OCH2 chain in the 9-position undergo quantitative and completely reversible intramolecular [4π+4π] cycloaddition. The

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