856097-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 856097-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,6,0,9 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 856097-91:
(8*8)+(7*5)+(6*6)+(5*0)+(4*9)+(3*7)+(2*9)+(1*1)=211
211 % 10 = 1
So 856097-91-1 is a valid CAS Registry Number.