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. Author manuscript; available in PMC: 2017 Nov 16.
Published in final edited form as: Toxicol Lett. 2016 Sep 19;262:92–99. doi: 10.1016/j.toxlet.2016.09.011

Table 1.

Inhibition of fatty acid amide hydrolase (FAAH) by parabens and 4-hydroxybenzoate.

pre-incubation (min) 5 60
Compound IC50 (μM)
URB597 0.040 ± 0.011 0.0030 ± 0.0005
4-HO-benzoate >100 >100
Methylparaben >100 >100
Propylparaben 9.4 ± 1.0 17.1 ± 1.8
Butylparaben 1.1 ± 0.2 2.4 ± 0.5
Benzylparaben 0.14 ± 0.03 0.28 ± 0.03