Cas 721915-55-5,OTAVA-BB BB7020300451

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Check Digit Verification of cas no

The CAS Registry Mumber 721915-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,9,1 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 721915-55:
(8*7)+(7*2)+(6*1)+(5*9)+(4*1)+(3*5)+(2*5)+(1*5)=155
155 % 10 = 5
So 721915-55-5 is a valid CAS Registry Number.

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721915-55-5Relevant academic research and scientific papers

A rapid and convenient synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2- ones and thiones

Fang, Zhanxiong,Lam, Yulin

experimental part, p. 1294 - 1297 (2011/04/12)

A rapid and convenient synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2- ones and thiones was developed. The reaction involves a one-pot reaction between oxalacetic acid, thiourea/urea, and aldehyde under microwave irradiation and provides the products

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