17881-26-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17881-26-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,8,8 and 1 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 17881-26:
(7*1)+(6*7)+(5*8)+(4*8)+(3*1)+(2*2)+(1*6)=134
134 % 10 = 4
So 17881-26-4 is a valid CAS Registry Number.