18673-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18673-49-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,7 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 18673-49:
(7*1)+(6*8)+(5*6)+(4*7)+(3*3)+(2*4)+(1*9)=139
139 % 10 = 9
So 18673-49-9 is a valid CAS Registry Number.