17743-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17743-80-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,7,4 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 17743-80:
(7*1)+(6*7)+(5*7)+(4*4)+(3*3)+(2*8)+(1*0)=125
125 % 10 = 5
So 17743-80-5 is a valid CAS Registry Number.