Characteristic components in TCM Standards

Tamarixetin (Standard) is the analytical standard of Tamarixetin. This product is intended for research and analytical applications. Tamarixetin (4'-O-Methyl Quercetin) is an orally active natural flavonoid derivative of quercetin and caseinolytic protease p (ClpP) inhibitor with anti-inflammatory, antioxidant and antitumor effects. Tamarixetin inhibits the hydrolytic activity of ClpP to the fluorescent substrate Suc-LY-AMC with an IC₅₀ of 49.73 μM, which can be used for the study of Staphylococcus aureus infection. Tamarixetin inhibits tumor cell growth, induces apoptosis, and cell cycle arrest. Tamarixetin prevents cardiac hypertrophy by inhibiting the NFAT and AKT pathways.

Dihydrokavain (Standard) (7,8-Dihydrokawain (Standard)) is the analytical standard of Dihydrokavain (HY-N0920). This product is intended for research and analytical applications. Dihydrokavain is a natural kavalactone compound. Dihydrokavain inhibits COX-1, COX-2, CYP2C9 (IC₅₀ = 130.95 μM), CYP2C19 (IC₅₀ = 10.05 μM) and CYP3A4 (IC₅₀ = 78.59 μM). Dihydrokavain reduces TNFα secretion. Dihydrokavain shows analgesic and anxiolytic effects.

Yangonin (Standard) is the analytical standard of Yangonin. This product is intended for research and analytical applications. Yangonin exhibits affinity for the human recombinant cannabinoid CB1 receptor with an IC50 and a Ki of 1.79 μM and 0.72 μM, respectively.

Desmethoxyyangonin (Standard) is one of the six major kavalactones found in the Piper methysticum (kava) plant. Desmethoxyyangonin (Standard) is a selective inhibitor of monoamine oxidase-B (MAO-B) (IC₅₀: 0.123  µM). Desmethoxyyangonin (Standard) exerts anti-inflammatory effects by inhibiting Jak2/STAT3 and IKK signaling pathways. Desmethoxyyangonin (Standard) induces CYP3A23 expression and leads to skeletal muscle relaxation.

Silybin (Standard) is the analytical standard of Silybin. This product is intended for research and analytical applications. Silybin is a flavonolignan isolated from milk thistle (Silybum marianum) seeds. Silybin induces apoptosis and exhibits hepatoprotective, antioxidant, anti-inflammatory, anti-cancer activity.

Isovitexin (Standard) is the analytical standard of Isovitexin. This product is intended for research and analytical applications. Isovitexin is a flavonoid isolated from passion flower, Cannabis and, and the palm, possesses anti-inflammatory and anti-oxidant activities; Isovitexin acts like a JNK1/2 inhibitor and inhibits the activation of NF-κB.

(-)-Bornyl acetate (Standard) is the analytical standard of (-)-Bornyl acetate. This product is intended for research and analytical applications. (-)-Bornyl acetate (L-(-)-Bornyl acetate), isolated from hyssop oil, is a less active enantiomer of (+)-Bornyl acetate. (-)-Bornyl acetate possesses antifungal activity.

Jatrorrhizine chloride (Standard) is the analytical standard of Jatrorrhizine chloride. This product is intended for research and analytical applications. Jatrorrhizine chloride is an alkaloid isolated from Coptis chinensis with neuroprotective, antimicrobial, antiplasmodial and antioxidant activities. Jatrorrhizine chloride is a potent and orally active inhibitor of AChE (IC₅₀=872 nM) over >115-fold selectivity for BuChE. Jatrorrhizine chloride reduces uptake of serotonin (5-HT) and norepinephrine (NE) via inhibition of uptake-2 transporters.

Aristolochic acid A (Standard) is the analytical standard of Aristolochic acid A. This product is intended for research and analytical applications. Aristolochic acid A (Aristolochic acid I; TR 1736) is the main component of plant extract Aristolochic acids, which are found in various herbal plants of genus Aristolochia and Asarum. Aristolochic acid A significantly reduces both activator protein 1 (AP-1) and NF-κB activities. Aristolochic acid A reduces BLCAP gene expression in human cell lines.

Nordihydrocapsaicin (Standard) is the analytical standard of Nordihydrocapsaicin. This product is intended for research and analytical applications. Nordihydrocapsaicin is a capsaicinoid analog and congener of capsaicin in chili peppers.

Anthraquinone (Standard) is the analytical standard of Anthraquinone. This product is intended for research and analytical applications. Anthraquinone is used as a precursor for dye formation.

Acefylline (Theophyllineacetic acid) (Standard) is the analytical standard of Acefylline (HY-B1505). This product is intended for research and analytical applications. Acefylline (Theophyllineacetic acid), a xanthine derivative, is an Adenosine Receptor antagonist. Acefylline is a peptidylarginine deiminase (PAD) activator. Acefylline is also a bronchodilator and cardiac stimulant that inhibits rat lung cAMP phosphodiesterase isoenzymes. Acefylline can be used in asthma research.

Mequinol (Standard) is the analytical standard of Mequinol. This product is intended for research and analytical applications. Mequinol (4-Methoxyphenol)yes MercurialisOne of the bioactive ingredients, mainly used for skin discoloration. MequinolIs an antioxidant that has additive/synergistic effects on carcinogenesis when combined with other phenolic antioxidants. Mequinolalso promote hERαDependent chaperone production with potential estrogenic activity.

Nonivamide (Standard) is the analytical standard of Nonivamide. This product is intended for research and analytical applications. Nonivamide is a

DL-Laudanosine (Standard) is the analytical standard of DL-Laudanosine. This product is intended for research and analytical applications. DL-Laudanosine, an Atracurium and Cisatracurium metabolite, crosses the blood–brain barrier and may cause excitement and seizure activity.

(2R/S)-6-PNG (Standard) is the analytical standard of (2R/S)-6-PNG. This product is intended for research and analytical applications. (2R/S)-6-PNG (6-Prenylnaringenin) is a potent and reversible Cav3.2 T-type Ca2+ channels (T-channels) blocker. (2R/S)-6-PNG can penetrate the blood-brain barrier (BBB). (2R/S)-6-PNG suppresses neuropathic and visceral pain in mice.

Harmol (Standard) is the analytical standard of Harmol (HY-107811). This product is intended for research and analytical applications. Harmol hydrochloride is an orally active β-carboline alkaloid. Harmol hydrochloride is a TFEB activator and monoamine oxidase inhibitor. Harmol can induce cell mitosis, Autophagy and Apoptosis. Harmol promotes the degradation of α-synuclein by regulating the autophagy-lysosomal pathway. Harmol has anti-tumor, anti-depressant and anti-aging activities. Harmol improves motor impairment in a mouse Parkinson's disease model.

Kaempferol 3-neohesperidoside (Kaempferol 3-O-neohesperidoside) Standard is the analytical standard of Kaempferol 3-neohesperidoside (HY-107207). This product is intended for research and analytical applications. Kaempferol 3-neohesperidoside (Kaempferol 3-O-neohesperidoside) is a flavonoid. Kaempferol 3-neohesperidoside mimics insulin action via the PI3K/PKC pathway, significantly promoting glucose uptake and increasing muscle glycogen content in rat soleus muscles. Kaempferol 3-neohesperidoside also exhibits anti-glycation activity. Kaempferol 3-neohesperidoside binds to albumin through hydrogen bonding and hydrophobic interactions, and inhibits the formation of advanced glycation end products. Kaempferol 3-neohesperidoside can be used in studies of diabetes and its related complications.

H-D-Trp-OH (Standard) is the analytical standard of H-D-Trp-OH. This product is intended for research and analytical applications. H-D-Trp-OH is a D-stereoisomer of tryptophan and occasionally found in naturally produced peptides such as the marine venom peptide.

Guaiazulene (Standard) is the analytical standard of Guaiazulene (HY-N6951). This product is intended for research and analytical applications. Guaiazulene is a bicyclic sesquiterpene that can cross the blood-brain barrier. Guaiazulene exhibits various biological activities such as anti-inflammatory, antioxidant, hepatoprotective, antibacterial, and anti-tumor properties. Guaiazulene is also commonly used as a colorant in cosmetics. Guaiazulene shows in vitro cytotoxicity to rat neuronal cells and N2a neuroblastoma cells at high concentrations.