. 2016 Sep 15;13(9):917. doi: 10.3390/ijerph13090917

Table 1.

General properties of the tested estrogens.

Compound	E3	BPA	DES	E2	EE2
Molecular structure
Molecular formula	C₁₈H₂₄O₃	C₁₅H₁₆O₂	C₁₈H₂₀O₂	C₁₈H₂₄O₂	C₂₀H₂₄O₂
Molar mass (g/M)	288.4	228.3	268.36	272.38	296.4
Melting point (°C)	280~282	176~180	170~172	178~179	182~183
Solubility in water (mg/L)	13	13	10	1.51 ± 0.04	9.2 ± 0.09
pK_a	10.4	10.7	10.3	10.5	11.3
logK_ow	2.6	3.94	5.07	3.1	3.9