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37173-04-9

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37173-04-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 37173-04-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,1,7 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 37173-04:
(7*3)+(6*7)+(5*1)+(4*7)+(3*3)+(2*0)+(1*4)=109
109 % 10 = 9
So 37173-04-9 is a valid CAS Registry Number.

37173-04-9Relevant articles and documents

Sterically congested ester formation from α-substituted malononitrile and alcohol by an oxidative method using molecular oxygen

Hayashi, Yujiro,Li, Jing,Asano, Hirotaka,Sakamoto, Daisuke

, p. 675 - 677 (2018/11/23)

A metal-free oxidative esterification or thio-esterifica-tion of readily available substituted malononitrile and alcohol or thiol has been developed by simply mixing α-substituted malononitrile and alcohol or thiol in the presence of base under a molecular oxygen atmosphere. Sterically hindered ester or thioester can be prepared efficiently.

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