74203-52-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74203-52-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,0 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 74203-52:
(7*7)+(6*4)+(5*2)+(4*0)+(3*3)+(2*5)+(1*2)=104
104 % 10 = 4
So 74203-52-4 is a valid CAS Registry Number.