721-94-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721-94-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,2 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 721-94:
(5*7)+(4*2)+(3*1)+(2*9)+(1*4)=68
68 % 10 = 8
So 721-94-8 is a valid CAS Registry Number.