83187-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83187-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,1,8 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83187-81:
(7*8)+(6*3)+(5*1)+(4*8)+(3*7)+(2*8)+(1*1)=149
149 % 10 = 9
So 83187-81-9 is a valid CAS Registry Number.