Cas 254902-82-4,4-[2-(3,4-dicyanophenyl)ethynyl]benzaldehyde

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Check Digit Verification of cas no

The CAS Registry Mumber 254902-82-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,9,0 and 2 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 254902-82:
(8*2)+(7*5)+(6*4)+(5*9)+(4*0)+(3*2)+(2*8)+(1*2)=144
144 % 10 = 4
So 254902-82-4 is a valid CAS Registry Number.

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254902-82-4Relevant articles and documents

Synthesis and properties of star-shaped multiporphyrin-phthalocyanine light-harvesting arrays

Li, Junzhong,Diers, James R.,Seth, Jyoti,Yang, Sung Ik,Bocian, David F.,Holten, Dewey,Lindsey, Jonathan S.

, p. 9090 - 9100 (1999)

Light-harvesting arrays containing four porphyrins covalently linked to a phthalocyanine in a star-shaped architecture have been synthesized. Cyclotetramerization of an ethyne-linked porphyrinphthalonitrile in 1- pentanol in the presence of MgCl2/su

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254902-82-4