1158438-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1158438-31-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,5,8,4,3 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1158438-31:
(9*1)+(8*1)+(7*5)+(6*8)+(5*4)+(4*3)+(3*8)+(2*3)+(1*1)=163
163 % 10 = 3
So 1158438-31-3 is a valid CAS Registry Number.