31045-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31045-19-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,0,4 and 5 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 31045-19:
(7*3)+(6*1)+(5*0)+(4*4)+(3*5)+(2*1)+(1*9)=69
69 % 10 = 9
So 31045-19-9 is a valid CAS Registry Number.