9028-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 9028-77-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,2 and 8 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 9028-77:
(6*9)+(5*0)+(4*2)+(3*8)+(2*7)+(1*7)=107
107 % 10 = 7
So 9028-77-7 is a valid CAS Registry Number.