TABLE 3.

Phenolic inhibitors of HQDO

Inhibitor name	Activity (%)	Inhibitor concn (μM)
4-Hydroxybenzoate	12	200
2,4-Dihydroxybenzoate	13	200
	6	400
2,3,4-Trihydroxybenzoate	81	200
2,4,6-Trihydroxybenzoate	40	200
2-Fluoro-4-hydroxybenzoate	12	200
3-Fluoro-4-hydroxybenzoate	19	200
2-Chloro-4-hydroxybenzoate	23	200
4-Methoxybenzoate	76	200
4-Hydroxybenzonitrile	0	200
	0	40
	5	2
4-Hydroxyphenylacetate	3	200
4-Hydroxybenzylalcohol	8	200
4-Hydroxybenzaldehyde	12	200
4-Hydroxybenzylcyanide	24	200
Vanillin	33	200
	61	100
4-Hydroxyphenethylalcohol	76	200
Vanillyl alcohol	78	200
4-Hydroxyacetophenone	83	200
Ferulic acid	24	40
	50	20
4-Hydroxycinnamate	0	200
	0	100
	77	20
Caffeic acid	59	80
	68	40
Tetrafluorohydroquinone	0	200
	9	100
	35	40
	64	20
Hydroxyhydroquinone	9	200
Phenol	83	200
Catechol	86	200
4-Nitrophenol	0	200
	9	100
	32	20
Isoeugenol	74	200
Chavicol	82	200
Eugenol	85	200