28833-72-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28833-72-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,8,3 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 28833-72:
(7*2)+(6*8)+(5*8)+(4*3)+(3*3)+(2*7)+(1*2)=139
139 % 10 = 9
So 28833-72-9 is a valid CAS Registry Number.