21943-79-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21943-79-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,4 and 3 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21943-79:
(7*2)+(6*1)+(5*9)+(4*4)+(3*3)+(2*7)+(1*9)=113
113 % 10 = 3
So 21943-79-3 is a valid CAS Registry Number.