129168-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129168-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,1,6 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 129168-55:
(8*1)+(7*2)+(6*9)+(5*1)+(4*6)+(3*8)+(2*5)+(1*5)=144
144 % 10 = 4
So 129168-55-4 is a valid CAS Registry Number.