42238-43-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42238-43-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,2,3 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 42238-43:
(7*4)+(6*2)+(5*2)+(4*3)+(3*8)+(2*4)+(1*3)=97
97 % 10 = 7
So 42238-43-7 is a valid CAS Registry Number.