28099-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28099-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,0,9 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 28099-21:
(7*2)+(6*8)+(5*0)+(4*9)+(3*9)+(2*2)+(1*1)=130
130 % 10 = 0
So 28099-21-0 is a valid CAS Registry Number.