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1639428-87-7

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1639428-87-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1639428-87-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,9,4,2 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1639428-87:
(9*1)+(8*6)+(7*3)+(6*9)+(5*4)+(4*2)+(3*8)+(2*8)+(1*7)=207
207 % 10 = 7
So 1639428-87-7 is a valid CAS Registry Number.

1639428-87-7Relevant articles and documents

Synthesis and photophysical properties of novel phthalocyanine- perylenediimide-phthalocyanine triad and phthalocyanine-perylenediimide dyads

Sun, Xiaobo,Qiu, Wenfeng,Wei, Donghui,Tang, Mingsheng,Guo, Lin

, p. 25616 - 25624 (2014/07/07)

A series of novel multi-component chromophores, one phthalocyanine- perylenediimide-phthalocyanine triad and two phthalocyanine-perylenediimide dyads, were synthesized by covalent linkage between phthalocyanines and perylene-3,4,9,10-bis(dicarboximide) at the bay position of perylene core in one condensation reaction. The photophysical properties of the dyes were presented with wider light absorption from 300 to 800 nm and discussed by interpretation and correlations with previous dyes. Density functional theory at the B3LYP level with 6-31G(d) was performed for geometry and energy optimization. Furthermore, a substitution and elimination reaction at the perylene bay position by using 1,8-diazabicyclo[5,4,0]undec-7-ene as catalyst was performed and its probable mechanism discussed. the Partner Organisations 2014.

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