Table:
0
A
B
C
D
E
1
Molecular formula
IUPAC name
CAS registry number
Common name
Other names
2
CHF 3
trifluoromethane
75-46-7
fluoroform
Freon 23, R-23, HFC-23
3
CHClF 2
chlorodifluoromethane
75-45-6
chlorodifluoromethane
R-22, HCFC-22
4
CHCl 3
trichloromethane
67-66-3
chloroform
methyl trichloride
5
CHBrCl 2
bromodichloromethane
75-27-4
bromodichloromethane
dichlorobromomethane, BDCM
6
CHBr 2 Cl
dibromochloromethane
124-48-1
dibromochloromethane
chlorodibromomethane, CDBM
7
CHBr 3
tribromomethane
75-25-2
bromoform
methyl tribromide
8
CHI 3
triiodomethane
75-47-8
iodoform
methyl triiodide

Questions and formulas:
Question: What is the IUPAC name for chloroform?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="chloroform"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,D2:D8="chloroform"),2))
Level: medium