4527-51-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4527-51-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,2 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4527-51:
(6*4)+(5*5)+(4*2)+(3*7)+(2*5)+(1*1)=89
89 % 10 = 9
So 4527-51-9 is a valid CAS Registry Number.