543730-31-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 543730-31-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,3,7,3 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 543730-31:
(8*5)+(7*4)+(6*3)+(5*7)+(4*3)+(3*0)+(2*3)+(1*1)=140
140 % 10 = 0
So 543730-31-0 is a valid CAS Registry Number.
543730-31-0Relevant articles and documents
Process for the preparation of Z-5-carboxymethylene-1,3-dioxolan-4-ones
-
Page/Page column 8, (2008/06/13)
A process for preparing Z-5-carboxymethylene-1,3-dioxolan-4-ones is provided which includes the steps of reacting a bis-ketal or bis-acetal of tartaric acid with a potassium containing base to form the carboxymethylene-1,3-dioxolan-4-one. A process for pr