Two new flavonols, including one flavan dimer, from the roots of Indigofera stachyodes

- New flavonols (1-2) were isolated from Indigofera stachyodes.
- Compound 2 was the flavonol characteristic of a 3-nitropropanoyl moiety.
- 2 and 3 exhibited good protective effect on CCl4-induced hepatotoxicity to HL-7702.