100040-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 100040-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,0,4 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 100040-97:
(8*1)+(7*0)+(6*0)+(5*0)+(4*4)+(3*0)+(2*9)+(1*7)=49
49 % 10 = 9
So 100040-97-9 is a valid CAS Registry Number.