20947-79-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20947-79-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,4 and 7 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20947-79:
(7*2)+(6*0)+(5*9)+(4*4)+(3*7)+(2*7)+(1*9)=119
119 % 10 = 9
So 20947-79-9 is a valid CAS Registry Number.