1191-73-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1191-73-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,9 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1191-73:
(6*1)+(5*1)+(4*9)+(3*1)+(2*7)+(1*3)=67
67 % 10 = 7
So 1191-73-7 is a valid CAS Registry Number.