1438399-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1438399-43-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,8,3,9 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1438399-43:
(9*1)+(8*4)+(7*3)+(6*8)+(5*3)+(4*9)+(3*9)+(2*4)+(1*3)=199
199 % 10 = 9
So 1438399-43-9 is a valid CAS Registry Number.