129420-92-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129420-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,4,2 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 129420-92:
(8*1)+(7*2)+(6*9)+(5*4)+(4*2)+(3*0)+(2*9)+(1*2)=124
124 % 10 = 4
So 129420-92-4 is a valid CAS Registry Number.