28833-20-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28833-20-7 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, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28833-20:
(7*2)+(6*8)+(5*8)+(4*3)+(3*3)+(2*2)+(1*0)=127
127 % 10 = 7
So 28833-20-7 is a valid CAS Registry Number.