138820-03-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138820-03-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,2 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138820-03:
(8*1)+(7*3)+(6*8)+(5*8)+(4*2)+(3*0)+(2*0)+(1*3)=128
128 % 10 = 8
So 138820-03-8 is a valid CAS Registry Number.