Table 1.

Chemical properties of heterocyclic amines tested. Log P values are from PubChem Compound Database.

Full chemical name	Abbreviation	Log P	Exposed functional groups	Estimated consumption (ng/kg/day)	References
2-amino-3-methylimidazo[4,5-f]quinoline	IQ	1.5	1 Amine 1 Methyl	0.23 – 0.28	(Keating and Bogen, 2004; Layton et al., 1995; PubChem, 2017b)
2-amino-3,4-dimethylimidazo[4,5-f]quinoline	MeIQ	2.0	1 Amine 2 Methyl	ND	(PubChem, 2017c)
2-amino-3,8-dimethylmidazo[4,5-f]quinoxaline	MeIQx	1.0	1 Amine 2 Methyl	1.10 – 2.61	(Bogen and Keating, 2001; Keating and Bogen, 2004; Layton et al., 1995; PubChem, 2017d)
2-amino-3,4,8-trimethylimidazo[4,5-f]quinoxaline	4,8-DiMeIQx	1.4	1 Amine 3 Methyl	0.20 – 0.81	(Bogen and Keating, 2001; Keating and Bogen, 2004; PubChem, 2017g)
2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine	PhIP	2.2	1 Amine 1 Methyl	6.00 – 16.64	(Bogen and Keating, 2001; Keating and Bogen, 2004; Layton et al., 1995; PubChem, 2017a)
1-methyl-9H-pyrido[3,4-b]indole	Harmane	3.6	1 Methyl	NQ	(PubChem, 2017h)
9H-Pyrido[3,4-B]indole	Norharmane	3.2	None	NQ	(PubChem, 2017f)
2-amino-9H-pyrido[2,3-b]indole	AαC	2.6	1 Hydrogen 1 Amine	1.50 – 5.17	(Bogen and Keating, 2001; Layton et al., 1995; PubChem, 2017e)

ND: not detected, NQ: not quantified.