100523-19-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 100523-19-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,5,2 and 3 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 100523-19:
(8*1)+(7*0)+(6*0)+(5*5)+(4*2)+(3*3)+(2*1)+(1*9)=61
61 % 10 = 1
So 100523-19-1 is a valid CAS Registry Number.