19104-20-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19104-20-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,1,0 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19104-20:
(7*1)+(6*9)+(5*1)+(4*0)+(3*4)+(2*2)+(1*0)=82
82 % 10 = 2
So 19104-20-2 is a valid CAS Registry Number.