181531-16-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181531-16-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,5,3 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 181531-16:
(8*1)+(7*8)+(6*1)+(5*5)+(4*3)+(3*1)+(2*1)+(1*6)=118
118 % 10 = 8
So 181531-16-8 is a valid CAS Registry Number.