289666-79-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 289666-79-1 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 6 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 289666-79:
(8*2)+(7*8)+(6*9)+(5*6)+(4*6)+(3*6)+(2*7)+(1*9)=221
221 % 10 = 1
So 289666-79-1 is a valid CAS Registry Number.