31003-33-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31003-33-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,0,0 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 31003-33:
(7*3)+(6*1)+(5*0)+(4*0)+(3*3)+(2*3)+(1*3)=45
45 % 10 = 5
So 31003-33-5 is a valid CAS Registry Number.