289709-75-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 289709-75-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,7,0 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 289709-75:
(8*2)+(7*8)+(6*9)+(5*7)+(4*0)+(3*9)+(2*7)+(1*5)=207
207 % 10 = 7
So 289709-75-7 is a valid CAS Registry Number.