Cas 1649-78-1,4-fluoro-N-(2,4,7-trinitrofluorenylidene)aniline

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Check Digit Verification of cas no

The CAS Registry Mumber 1649-78-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,4 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1649-78:
(6*1)+(5*6)+(4*4)+(3*9)+(2*7)+(1*8)=101
101 % 10 = 1
So 1649-78-1 is a valid CAS Registry Number.

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1649-78-1Relevant articles and documents

Synthesis of N-(Nitrofluorenylidene)anilines and their Application as Electron Transport Materials in Positive Charge Electrophotography

Matsui, Masaki,Fukuyasu, Katsuyuki,Shibata, Katsuyoshi,Muramatsu, Hiroshige

, p. 1107 - 1110 (1993)

N-(Nitrofluorenylidene)anilines were synthesized by the condensation of nitrofluorenones with substituted anilines in the presence of zinc chloride. 2-Methyl, 2-ethyl, 2-isopropyl and 2-trifluoromethyl derivatives from 2,4,7-trinitrofluorenone showed high

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1649-78-1