249917-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 249917-31-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,9,1 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 249917-31:
(8*2)+(7*4)+(6*9)+(5*9)+(4*1)+(3*7)+(2*3)+(1*1)=175
175 % 10 = 5
So 249917-31-5 is a valid CAS Registry Number.