17841-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17841-97-3 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 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 17841-97:
(7*1)+(6*7)+(5*8)+(4*4)+(3*1)+(2*9)+(1*7)=133
133 % 10 = 3
So 17841-97-3 is a valid CAS Registry Number.