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91411-69-7

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91411-69-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91411-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,4,1 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91411-69:
(7*9)+(6*1)+(5*4)+(4*1)+(3*1)+(2*6)+(1*9)=117
117 % 10 = 7
So 91411-69-7 is a valid CAS Registry Number.

91411-69-7Relevant articles and documents

Synthesis and Electronic Absorption Spectra of Some Five-Membered Bisheterocyclic Polymethine Cyanine Dyes

El-Aal, Reda Mahmoud Abd

, p. 850 - 865 (2007/10/03)

3,5-Dimethyl-1-phenyl-1H-pyrazolooxazole 5 was prepared and used as starting material in the synthesis of some polymethine cyanine dyes incorporating a biheterocyclic system.The chemical structure of the new polymethine cyanines were identified based on their elemental analysis and spectral data.The electronic absorption spectra of the synthesized cyanine dyes are discussed.

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