28333-27-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28333-27-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,3,3 and 3 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 28333-27:
(7*2)+(6*8)+(5*3)+(4*3)+(3*3)+(2*2)+(1*7)=109
109 % 10 = 9
So 28333-27-9 is a valid CAS Registry Number.