90344-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90344-31-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,3,4 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90344-31:
(7*9)+(6*0)+(5*3)+(4*4)+(3*4)+(2*3)+(1*1)=113
113 % 10 = 3
So 90344-31-3 is a valid CAS Registry Number.