7528-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7528-71-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,2 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7528-71:
(6*7)+(5*5)+(4*2)+(3*8)+(2*7)+(1*1)=114
114 % 10 = 4
So 7528-71-4 is a valid CAS Registry Number.