420797-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 420797-71-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,0,7,9 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 420797-71:
(8*4)+(7*2)+(6*0)+(5*7)+(4*9)+(3*7)+(2*7)+(1*1)=153
153 % 10 = 3
So 420797-71-3 is a valid CAS Registry Number.