28129-07-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28129-07-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,1,2 and 9 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 28129-07:
(7*2)+(6*8)+(5*1)+(4*2)+(3*9)+(2*0)+(1*7)=109
109 % 10 = 9
So 28129-07-9 is a valid CAS Registry Number.