18243-38-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18243-38-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,2,4 and 3 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 18243-38:
(7*1)+(6*8)+(5*2)+(4*4)+(3*3)+(2*3)+(1*8)=104
104 % 10 = 4
So 18243-38-4 is a valid CAS Registry Number.