Table 1. Equol Metabolites Detected in Plasma of Ovarectiomized Rats Fed a Single Oral Dose of Dietary Daidzein (n = 4 Pairs, 10 mg/mL) or Equol (n = 5 Pairs, 2 mg/mL).

metabolite	retention time (min)	m/z transition
equol	10.8	241/119
equol disulfate	8.83	401/321
equol glucuronide	8.72	417/241
equol monosulfate	9.76	321/121