17840-26-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17840-26-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,8,4 and 0 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 17840-26:
(7*1)+(6*7)+(5*8)+(4*4)+(3*0)+(2*2)+(1*6)=115
115 % 10 = 5
So 17840-26-5 is a valid CAS Registry Number.