257862-66-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257862-66-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,8,6 and 2 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 257862-66:
(8*2)+(7*5)+(6*7)+(5*8)+(4*6)+(3*2)+(2*6)+(1*6)=181
181 % 10 = 1
So 257862-66-1 is a valid CAS Registry Number.