28669-25-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28669-25-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,6,6 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 28669-25:
(7*2)+(6*8)+(5*6)+(4*6)+(3*9)+(2*2)+(1*5)=152
152 % 10 = 2
So 28669-25-2 is a valid CAS Registry Number.