42175-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42175-56-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,7 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 42175-56:
(7*4)+(6*2)+(5*1)+(4*7)+(3*5)+(2*5)+(1*6)=104
104 % 10 = 4
So 42175-56-4 is a valid CAS Registry Number.