131303-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131303-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,3,0 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 131303-55:
(8*1)+(7*3)+(6*1)+(5*3)+(4*0)+(3*3)+(2*5)+(1*5)=74
74 % 10 = 4
So 131303-55-4 is a valid CAS Registry Number.