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42216-23-9

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42216-23-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42216-23-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,2,1 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 42216-23:
(7*4)+(6*2)+(5*2)+(4*1)+(3*6)+(2*2)+(1*3)=79
79 % 10 = 9
So 42216-23-9 is a valid CAS Registry Number.

42216-23-9Relevant articles and documents

Method for the Production of 1,3-Dioxolane-2-Ones and Carboxylic Acid Esters by Means of Transacylation in Basic Reaction Conditions

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Page/Page column 11, (2010/12/29)

The invention relates to a method for producing 1,3-dioxolane-2-ones of general formula (3) in basic reaction conditions by reesterifying the respective ester of general formula (1) in which R1 to R5 have the meanings indicated in the claims and the descr

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