4243-78-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4243-78-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,4 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4243-78:
(6*4)+(5*2)+(4*4)+(3*3)+(2*7)+(1*8)=81
81 % 10 = 1
So 4243-78-1 is a valid CAS Registry Number.