Table 1.

Formulation of artificial cigarette smoke odor^a

Odorant	CAS #	Volume (µl)
Pyridine	110–86-1	5
Nicotinaldehyde	500–22-1	15
5-Ethyl-2-methylpyridine	104–90-5	30
2-Vinylpyridine	100–69-6	5
4-Pyridinecarbonitrile	100–48-1	5 mg
Methyl isonicotinate	2459–09-8	30
2-Ethyl-3-methylpyrazine	15707–23-0	20
2-Methoxy-3,5-methylpyrazine	93905–03-4	4
2-Methoxyphenol	90–05-1	15
o-Cresol	95–48-7	5
5-Methylfurfural	620–02-0	15
2,5-Dimethylpyrrole	625–84-3	30
Phenylacetylene	536–74-3	15
Isoprene	78–79-5	15
1,3-Cyclohexadiene	592–57-4	5
Indene	95–13-6	15
Allylbenzene	300–57-2	15
2,3-Butanedione	431–03-8	10
Thiophene	110–02-1	5
1-Pentanethiol	110–66-7	2.5
Allylamine	107–11-9	2.5
1-Aminopentane	110–58-7	2.5
Butyric acid	107–92-6	10
1-Hexanal	66–25-1	5
Trans,trans-2,4-Hexadienal	142–83-6	5
Indole	120–72-9	5 mg

^aIndole and 4-pyridinecarbonitrile were dissolved at 0.5 mg/µl in DMSO and 10 µl of each added to the mixture.