42039-72-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42039-72-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,3 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42039-72:
(7*4)+(6*2)+(5*0)+(4*3)+(3*9)+(2*7)+(1*2)=95
95 % 10 = 5
So 42039-72-5 is a valid CAS Registry Number.