3444-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3444-31-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,4,4 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 3444-31:
(6*3)+(5*4)+(4*4)+(3*4)+(2*3)+(1*1)=73
73 % 10 = 3
So 3444-31-3 is a valid CAS Registry Number.