166903-87-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166903-87-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,9,0 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 166903-87:
(8*1)+(7*6)+(6*6)+(5*9)+(4*0)+(3*3)+(2*8)+(1*7)=163
163 % 10 = 3
So 166903-87-3 is a valid CAS Registry Number.