12004-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12004-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,0 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 12004-20:
(7*1)+(6*2)+(5*0)+(4*0)+(3*4)+(2*2)+(1*0)=35
35 % 10 = 5
So 12004-20-5 is a valid CAS Registry Number.