289616-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 289616-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,6,1 and 6 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 289616-89:
(8*2)+(7*8)+(6*9)+(5*6)+(4*1)+(3*6)+(2*8)+(1*9)=203
203 % 10 = 3
So 289616-89-3 is a valid CAS Registry Number.