856-69-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 856-69-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,5 and 6 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 856-69:
(5*8)+(4*5)+(3*6)+(2*6)+(1*9)=99
99 % 10 = 9
So 856-69-9 is a valid CAS Registry Number.