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97942-47-7

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97942-47-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97942-47-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,4 and 2 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 97942-47:
(7*9)+(6*7)+(5*9)+(4*4)+(3*2)+(2*4)+(1*7)=187
187 % 10 = 7
So 97942-47-7 is a valid CAS Registry Number.

97942-47-7Relevant articles and documents

Syntheses with Cyclobutadienes, 7. An Approach to the 2-Oxabicyclohexene/3-Oxatricyclo2,6>hexane System by Thermal Cycloaddition of Carbonyl Compounds onto a Stable Cyclobutadiene

Fink, Juergen,Regitz, Manfred

, p. 2255 - 2265 (2007/10/02)

Carboxylic acid chlorides (2a,b) undergo 1,4-addition with 1 to the cyclobutenes 3a and b, whereas for aldehydes and ketones cycloaddition-behaviour is observed.Aldehydes (4a - c) react smoothly with 1 under formation of the oxabicycles 5a - c, activated

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