171663-86-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171663-86-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,6,6 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 171663-86:
(8*1)+(7*7)+(6*1)+(5*6)+(4*6)+(3*3)+(2*8)+(1*6)=148
148 % 10 = 8
So 171663-86-8 is a valid CAS Registry Number.