139158-42-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139158-42-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,5 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139158-42:
(8*1)+(7*3)+(6*9)+(5*1)+(4*5)+(3*8)+(2*4)+(1*2)=142
142 % 10 = 2
So 139158-42-2 is a valid CAS Registry Number.