87139-45-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87139-45-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,1,3 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87139-45:
(7*8)+(6*7)+(5*1)+(4*3)+(3*9)+(2*4)+(1*5)=155
155 % 10 = 5
So 87139-45-5 is a valid CAS Registry Number.