138958-09-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138958-09-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,9,5 and 8 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138958-09:
(8*1)+(7*3)+(6*8)+(5*9)+(4*5)+(3*8)+(2*0)+(1*9)=175
175 % 10 = 5
So 138958-09-5 is a valid CAS Registry Number.