1993-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1993-81-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,9 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1993-81:
(6*1)+(5*9)+(4*9)+(3*3)+(2*8)+(1*1)=113
113 % 10 = 3
So 1993-81-3 is a valid CAS Registry Number.