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1033595-33-3

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1033595-33-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1033595-33-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,3,5,9 and 5 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1033595-33:
(9*1)+(8*0)+(7*3)+(6*3)+(5*5)+(4*9)+(3*5)+(2*3)+(1*3)=133
133 % 10 = 3
So 1033595-33-3 is a valid CAS Registry Number.

1033595-33-3Relevant articles and documents

Facile synthesis of a series of liquid crystalline 2-(4'-alkylphenyl)-5-cyanopyridines

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Page/Page column 2, (2008/12/06)

The invention relates to a facile synthesis of a series of 2-(4′-alkylphenyl)-5-cyanopyridine liquid crystal compounds which are represented by the following formula (I): wherein Cn is a linear alkyl having 1-12 carbon atoms. The synthesis of the liquid crystalline 2-(4′-alkylphenyl)-5-cyanopyridine is completed in a two-step reaction. First, a Grignard reagent (such as 4-alkylphenylmagnesium bromide) is added to a 3-cyanopyridinium salt (such as N-phenyloxycarbonyl-3-cyanopyridinium chloride) to get a 1,2-dihydropyridine. Then the 1,2-dihydropyridine is oxidized with o-chloronil to obtain the 2-(4′-alkylphenyl)-5-cyanopyridine.

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