181585-31-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181585-31-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,5,8 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 181585-31:
(8*1)+(7*8)+(6*1)+(5*5)+(4*8)+(3*5)+(2*3)+(1*1)=149
149 % 10 = 9
So 181585-31-9 is a valid CAS Registry Number.