42531-52-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42531-52-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,3 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42531-52:
(7*4)+(6*2)+(5*5)+(4*3)+(3*1)+(2*5)+(1*2)=92
92 % 10 = 2
So 42531-52-2 is a valid CAS Registry Number.