171803-98-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171803-98-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,8,0 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 171803-98:
(8*1)+(7*7)+(6*1)+(5*8)+(4*0)+(3*3)+(2*9)+(1*8)=138
138 % 10 = 8
So 171803-98-8 is a valid CAS Registry Number.