857809-45-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857809-45-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,8,0 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 857809-45:
(8*8)+(7*5)+(6*7)+(5*8)+(4*0)+(3*9)+(2*4)+(1*5)=221
221 % 10 = 1
So 857809-45-1 is a valid CAS Registry Number.