138039-05-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138039-05-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,0,3 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138039-05:
(8*1)+(7*3)+(6*8)+(5*0)+(4*3)+(3*9)+(2*0)+(1*5)=121
121 % 10 = 1
So 138039-05-1 is a valid CAS Registry Number.