289665-66-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 289665-66-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,6,6 and 5 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 289665-66:
(8*2)+(7*8)+(6*9)+(5*6)+(4*6)+(3*5)+(2*6)+(1*6)=213
213 % 10 = 3
So 289665-66-3 is a valid CAS Registry Number.