259859-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 259859-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,8,5 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 259859-91:
(8*2)+(7*5)+(6*9)+(5*8)+(4*5)+(3*9)+(2*9)+(1*1)=211
211 % 10 = 1
So 259859-91-1 is a valid CAS Registry Number.