181515-49-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181515-49-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,5,1 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 181515-49:
(8*1)+(7*8)+(6*1)+(5*5)+(4*1)+(3*5)+(2*4)+(1*9)=131
131 % 10 = 1
So 181515-49-1 is a valid CAS Registry Number.