40339-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40339-97-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,3,3 and 9 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 40339-97:
(7*4)+(6*0)+(5*3)+(4*3)+(3*9)+(2*9)+(1*7)=107
107 % 10 = 7
So 40339-97-7 is a valid CAS Registry Number.