42389-52-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42389-52-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,3,8 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42389-52:
(7*4)+(6*2)+(5*3)+(4*8)+(3*9)+(2*5)+(1*2)=126
126 % 10 = 6
So 42389-52-6 is a valid CAS Registry Number.