166240-55-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166240-55-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,2,4 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 166240-55:
(8*1)+(7*6)+(6*6)+(5*2)+(4*4)+(3*0)+(2*5)+(1*5)=127
127 % 10 = 7
So 166240-55-7 is a valid CAS Registry Number.