857816-86-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857816-86-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,8,1 and 6 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 857816-86:
(8*8)+(7*5)+(6*7)+(5*8)+(4*1)+(3*6)+(2*8)+(1*6)=225
225 % 10 = 5
So 857816-86-5 is a valid CAS Registry Number.