439917-15-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439917-15-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,9,1 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 439917-15:
(8*4)+(7*3)+(6*9)+(5*9)+(4*1)+(3*7)+(2*1)+(1*5)=184
184 % 10 = 4
So 439917-15-4 is a valid CAS Registry Number.