Cas 125849-46-9,3,4-Bis-(4-oxo-4H-pyridin-1-yl)-1-phenyl-pyrrole-2,5-dione

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Check Digit Verification of cas no

The CAS Registry Mumber 125849-46-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,8,4 and 9 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 125849-46:
(8*1)+(7*2)+(6*5)+(5*8)+(4*4)+(3*9)+(2*4)+(1*6)=149
149 % 10 = 9
So 125849-46-9 is a valid CAS Registry Number.

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125849-46-9Relevant academic research and scientific papers

Novel Chromophoric Heterocycles Based on Maleimide and Naphthoquinone

Katritzky, Alan R.,Fan, Wei-Qiang,Li, Qiao-Ling,Bayyuk, Shibli

, p. 885 - 892 (2007/10/02)

1-Phenyl-3,4-dichloromaleimide, 1-n-propyl-3-bromomaleimide, and 2,3-dichloro-1,4-naphthoquinone have been condensed with various mono- and bis-nucleophiles to yield a range of novel dyes and pigments.Their visible absorption spectra are discussed.

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