31581-58-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31581-58-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,5,8 and 1 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 31581-58:
(7*3)+(6*1)+(5*5)+(4*8)+(3*1)+(2*5)+(1*8)=105
105 % 10 = 5
So 31581-58-5 is a valid CAS Registry Number.