91349-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91349-80-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,3,4 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91349-80:
(7*9)+(6*1)+(5*3)+(4*4)+(3*9)+(2*8)+(1*0)=143
143 % 10 = 3
So 91349-80-3 is a valid CAS Registry Number.