123984-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123984-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,9,8 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 123984-18:
(8*1)+(7*2)+(6*3)+(5*9)+(4*8)+(3*4)+(2*1)+(1*8)=139
139 % 10 = 9
So 123984-18-9 is a valid CAS Registry Number.