6538-05-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6538-05-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,3 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 6538-05:
(6*6)+(5*5)+(4*3)+(3*8)+(2*0)+(1*5)=102
102 % 10 = 2
So 6538-05-2 is a valid CAS Registry Number.