857816-19-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857816-19-4 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, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 857816-19:
(8*8)+(7*5)+(6*7)+(5*8)+(4*1)+(3*6)+(2*1)+(1*9)=214
214 % 10 = 4
So 857816-19-4 is a valid CAS Registry Number.