7711-93-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7711-93-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,1 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7711-93:
(6*7)+(5*7)+(4*1)+(3*1)+(2*9)+(1*3)=105
105 % 10 = 5
So 7711-93-5 is a valid CAS Registry Number.