2281-07-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2281-07-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,8 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 2281-07:
(6*2)+(5*2)+(4*8)+(3*1)+(2*0)+(1*7)=64
64 % 10 = 4
So 2281-07-4 is a valid CAS Registry Number.