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229308-48-9

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229308-48-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 229308-48-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,9,3,0 and 8 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 229308-48:
(8*2)+(7*2)+(6*9)+(5*3)+(4*0)+(3*8)+(2*4)+(1*8)=139
139 % 10 = 9
So 229308-48-9 is a valid CAS Registry Number.

229308-48-9Relevant articles and documents

A second-generation cycloaddition approach to 3-acyl-4-hydroxypyridin- 2-ones

Jones, Raymond C. F.,Dawson, Claire E.,O'Mahony, Mary J.,Patel, Pravin

, p. 4085 - 4088 (1999)

The 1,3-dipolar cycloaddition of the β-aminonitrile oxide, formed from β-alanine, to the enamine of a β-ketoester affords a 3-(2- aminoalkyl)isoxazole-4-carboxylic ester that is converted via isoxazolo[4,5- c]pyridin-4-ones into 3-acetyl-4-hydroxypyridin-2-ones.

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