166406-74-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166406-74-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,4,0 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 166406-74:
(8*1)+(7*6)+(6*6)+(5*4)+(4*0)+(3*6)+(2*7)+(1*4)=142
142 % 10 = 2
So 166406-74-2 is a valid CAS Registry Number.