31124-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31124-99-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,1,2 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 31124-99:
(7*3)+(6*1)+(5*1)+(4*2)+(3*4)+(2*9)+(1*9)=79
79 % 10 = 9
So 31124-99-9 is a valid CAS Registry Number.