103904-72-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 103904-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,9,0 and 4 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 103904-72:
(8*1)+(7*0)+(6*3)+(5*9)+(4*0)+(3*4)+(2*7)+(1*2)=99
99 % 10 = 9
So 103904-72-9 is a valid CAS Registry Number.