129942-64-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129942-64-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,9,4 and 2 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 129942-64:
(8*1)+(7*2)+(6*9)+(5*9)+(4*4)+(3*2)+(2*6)+(1*4)=159
159 % 10 = 9
So 129942-64-9 is a valid CAS Registry Number.