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57427-81-3

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57427-81-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57427-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,2 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57427-81:
(7*5)+(6*7)+(5*4)+(4*2)+(3*7)+(2*8)+(1*1)=143
143 % 10 = 3
So 57427-81-3 is a valid CAS Registry Number.

57427-81-3Relevant articles and documents

An efficient synthesis of new class of pyrazolo[3,4-b]pyridine-6-one derivatives by a novel cascade reaction

Shi, Feng,Zhang, Junyong,Tu, Shujiang,Jia, Runhong,Zhang, Yan,Jiang, Bo,Jiang, Hong

, p. 1013 - 1017 (2007)

(Chemical Equation Presented) A novel cascade reaction of 4-arylidene-2-phenyl-1,3-oxazol-5(4H)-one with 3-methyl-l-phenyl-1H-pyrazol-5- amine was described and a number of new pyrazolo[3,4-b]pyridine-6-one derivatives were synthesized. This new protocol has the advantages of shorter time, higher yields, and lower cost as well as easier operation.

Utilization of 2-substituted 3, 1-benzoxazin-4-ones in synthesis of some quinazoline annulated derivatives

Abd-Alaziz, Asmaa M.,El-Naggar, Abeer M.,Sallam, Hanan A.,Youssef, Ahmed S. A.

, (2020/02/20)

In this study, a new series of quinazoline and their annulated derivatives have been synthesized. A number of quiazolinone derivatives substituted at position-3 were prepared from 3, 1-benzoxazinone by the treatment of 3,1-benzoxazinone with different nit

Sulfanilic acid-catalyzed green synthesis of 4-Arylidene-2-phenyl-5(4H)-Oxazolones

Kiyani, Hamzeh,Aslanpour, Shiva

, p. 297 - 303 (2018/02/22)

This study is focused on the catalytic activity of sulfanilic acid (SA) in the straightforward synthesis of 4-Arylidene-2-phenyl-5(4H)-oxazolones via condensation of aromatic aldehydes, hippuric acid, and acetic anhydride under green experimental conditio

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