129429-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129429-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,4,2 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 129429-20:
(8*1)+(7*2)+(6*9)+(5*4)+(4*2)+(3*9)+(2*2)+(1*0)=135
135 % 10 = 5
So 129429-20-5 is a valid CAS Registry Number.