228704-16-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 228704-16-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,8,7,0 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 228704-16:
(8*2)+(7*2)+(6*8)+(5*7)+(4*0)+(3*4)+(2*1)+(1*6)=133
133 % 10 = 3
So 228704-16-3 is a valid CAS Registry Number.