859981-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 859981-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,9,9,8 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 859981-56:
(8*8)+(7*5)+(6*9)+(5*9)+(4*8)+(3*1)+(2*5)+(1*6)=249
249 % 10 = 9
So 859981-56-9 is a valid CAS Registry Number.