221534-24-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221534-24-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,5,3 and 4 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 221534-24:
(8*2)+(7*2)+(6*1)+(5*5)+(4*3)+(3*4)+(2*2)+(1*4)=93
93 % 10 = 3
So 221534-24-3 is a valid CAS Registry Number.