139730-55-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139730-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,3 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 139730-55:
(8*1)+(7*3)+(6*9)+(5*7)+(4*3)+(3*0)+(2*5)+(1*5)=145
145 % 10 = 5
So 139730-55-5 is a valid CAS Registry Number.