17421-62-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17421-62-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,4,2 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 17421-62:
(7*1)+(6*7)+(5*4)+(4*2)+(3*1)+(2*6)+(1*2)=94
94 % 10 = 4
So 17421-62-4 is a valid CAS Registry Number.