129398-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129398-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,3,9 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 129398-18:
(8*1)+(7*2)+(6*9)+(5*3)+(4*9)+(3*8)+(2*1)+(1*8)=161
161 % 10 = 1
So 129398-18-1 is a valid CAS Registry Number.