13604-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13604-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,6,0 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 13604-31:
(7*1)+(6*3)+(5*6)+(4*0)+(3*4)+(2*3)+(1*1)=74
74 % 10 = 4
So 13604-31-4 is a valid CAS Registry Number.