228711-45-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 228711-45-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,8,7,1 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 228711-45:
(8*2)+(7*2)+(6*8)+(5*7)+(4*1)+(3*1)+(2*4)+(1*5)=133
133 % 10 = 3
So 228711-45-3 is a valid CAS Registry Number.