251922-71-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251922-71-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,2 and 2 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 251922-71:
(8*2)+(7*5)+(6*1)+(5*9)+(4*2)+(3*2)+(2*7)+(1*1)=131
131 % 10 = 1
So 251922-71-1 is a valid CAS Registry Number.