6528-27-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6528-27-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,2 and 8 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6528-27:
(6*6)+(5*5)+(4*2)+(3*8)+(2*2)+(1*7)=104
104 % 10 = 4
So 6528-27-4 is a valid CAS Registry Number.