5224-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5224-21-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,2 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5224-21:
(6*5)+(5*2)+(4*2)+(3*4)+(2*2)+(1*1)=65
65 % 10 = 5
So 5224-21-5 is a valid CAS Registry Number.