5,7,8,4''-Tetramethoxyflavone

Pale yellow crystalline powder, soluble in organic solvents such as methanol, ethanol, and DMSO, derived from Citrus aurantium.

6-Demethoxytangeretin is a flavonoid compound that can be isolated from Citrus reticulata. 6-Demethoxytangeretin has anti-inflammatory and anti-allergic activities and can inhibit the production of IL-6 and the expression of related genes in human mast cells through the ALK and MAPK pathways. 6-Demethoxytangeretin can promote CRE-mediated transcription in hippocampal neurons[1][2].

[1] Kim YM, et al. A citrus flavonoid, 6-demethoxytangeretin, suppresses production and gene expression of interleukin-6 in human mast cell-1 via anaplastic lymphoma kinase and mitogen-activated protein kinase pathways. Biol Pharm Bull. 2014;37(5):871-6. Epub 2014 Feb 5. DOI:10.1248/bpb.b13-00875
[2] Kawahata I, et al. Potent activity of nobiletin-rich Citrus reticulata peel extract to facilitate cAMP/PKA/ERK/CREB signaling associated with learning and memory in cultured hippocampal neurons: identification of the substances responsible for the pharmacological action. J Neural Transm (Vienna). 2013 Oct;120(10):1397-409. DOI:10.1007/s00702-013-1025-x