859820-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 859820-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,9,8,2 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 859820-20:
(8*8)+(7*5)+(6*9)+(5*8)+(4*2)+(3*0)+(2*2)+(1*0)=205
205 % 10 = 5
So 859820-20-5 is a valid CAS Registry Number.