129505-16-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129505-16-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,5,0 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 129505-16:
(8*1)+(7*2)+(6*9)+(5*5)+(4*0)+(3*5)+(2*1)+(1*6)=124
124 % 10 = 4
So 129505-16-4 is a valid CAS Registry Number.