857781-28-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857781-28-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,7,8 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 857781-28:
(8*8)+(7*5)+(6*7)+(5*7)+(4*8)+(3*1)+(2*2)+(1*8)=223
223 % 10 = 3
So 857781-28-3 is a valid CAS Registry Number.