. Author manuscript; available in PMC: 2010 Aug 31.

Published in final edited form as: Environ Sci Technol. 2010 Aug 1;44(15):5979–5985. doi: 10.1021/es102150z

Table 2.

Results of ER assays on NPs and NPEs.

Chemical	Assay	EC50 (μM)	R²	EMax	p-value
Nonylphenol (linear) 104–40–5	trans -ERα	11	0.77	8.3	0.29
Nonylphenol (linear) 104–40–5	cis-ERE	4.3	0.55	2.7	0.096
Nonylphenol (branched) 84852–15–3	trans -ERα	0.68	0.91	12	0.0049
Nonylphenol (branched) 84852–15–3	cis-ERE	0.61	0.092	5.4	4.9E-5
Tergitol NP-9 127087–87–0	trans -ERα	5.7	0.86	4.8	0.18
Tergitol NP-9 127087–87–0	cis-ERE	5.6	0.96	2.1	0.042
Igepal CO–210 68412–54–4	trans -ERα	2.5	0.89	8.5	0.19
Igepal CO–210 68412–54–4	cis-ERE	14	0.96	6.5	2.1E-11