. 2017 Aug 11;22(8):1323. doi: 10.3390/molecules22081323

Table 1.

Characterization of the Phosphate-Linked Silibinin dimers 6–8.

Compound	MALDI	t_R (min) ^a	DPPH IC₅₀ (mM)	t_1/2 (h)
6	Calcd. for C₅₀H₄₃O₂₂P = 1026.20 found [M − H]⁻ = 1025.12; [MNa − H]⁻ = 1047.09	13.6	0.58 ± 0.04	86.7
7	Calcd. for C₅₀H₄₃O₂₂P = 1026.20 found [M − H]⁻ = 1025.28; [MNa − H]⁻ = 1047.09	13.4	0.55 ± 0.05	85.6
8	Calcd. for C₅₀H₄₃O₂₂P = 1026.20 found [M − H]⁻ = 1025.11; [MNa − H]⁻ = 1048.99	14.7	0.34 ± 0.07	81.2
Silibinin (1)	–	–	1.40 ± 0.06	–
Quercetin	–	–	0.18 ± 0.01	–

^a For analysis conditions see Section 3.8.