251566-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251566-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,5,6 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 251566-20:
(8*2)+(7*5)+(6*1)+(5*5)+(4*6)+(3*6)+(2*2)+(1*0)=128
128 % 10 = 8
So 251566-20-8 is a valid CAS Registry Number.