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77791-15-2

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77791-15-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77791-15-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,9 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77791-15:
(7*7)+(6*7)+(5*7)+(4*9)+(3*1)+(2*1)+(1*5)=172
172 % 10 = 2
So 77791-15-2 is a valid CAS Registry Number.

77791-15-2Downstream Products

77791-15-2Relevant articles and documents

Investigation of the Synthesis of Benzoxazole via Aryne Reaction

El-Sheikh, Mustafa I.,Marks, Alan,Biehl, Edward R.

, p. 3256 - 3259 (2007/10/02)

The reaction of o- and m-halobenzamides under aryne-forming conditions yielded the corresponding o-hydroxyphenyl amidines instead of the expected benzoxazole derivatives.The amidines, however, were converted to the corresponding benzoxazole either by sublimation or acidic hydrolysis.Evidence is presented that benzoxazoles are initially formed in these reactions but are readily aminated to the corresponding hydroxyphenyl amidines under the highly basic reaction conditions used in these aryne-forming reactions.

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