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1225-22-5

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1225-22-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1225-22-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,2 and 5 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1225-22:
(6*1)+(5*2)+(4*2)+(3*5)+(2*2)+(1*2)=45
45 % 10 = 5
So 1225-22-5 is a valid CAS Registry Number.

1225-22-5Relevant articles and documents

Synthesis of Symmetrical Diaryl 1,2-Diketones from Grignard Reagents and 1,1'-Oxalylimidazole

Mitchell, Reginald H.,Iyer, Vivekanantan S.

, p. 3683 - 3686 (1993)

Symmetrical diaryl 1,2-diketones (α-diketones) are obtained in reasonably good yields when readily accessible 1,1'-oxalylimidazole is treated with two equivalents of an aryl Grignard reagent.

A Direct Access to α-Diones from Oxalyl Chloride

Babudri, Francesco,Fiandanese, Vito,Marchese, Giuseppe,Punzi, Angela

, p. 7305 - 7308 (1995)

Cross-coupling reactions of oxalyl chloride with organocopper reagents, derived from Grignard reagents, cuprous bromide, and lithium bromide, provide a simple and straightforward method for the synthesis of symmetrical α-diones in very good yields.

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