Monophenols

3-Hydroxyanthranilic acid is a tryptophan metabolite in the kynurenine pathway.3-hydroxyanthranilic acid has anti-inflammatory, neuroprotective, and lipid-lowering effects. 3-hydroxyanthranilic acid can be used for researches of cardiovascular diseases, tumors, and metabolic diseases.

[Leu5]-Enkephalin is a pentapeptide with morphine like properties. [Leu5]-Enkephalin is a five amino acid endogenous peptide that acts as an agonist at opioid receptors.

Erianin, often used as an antipyretic and analgesic agent, could inhibit IDO-induced tumor angiogenesis.

Sinomenine, an alkaloid extracted from Sinomenium acutum, is a blocker of the NF-κB activation. Sinomenine also is an activator of μ-opioid receptor.

Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation. Salicylic acid has blood-brain barrier permeability.

p-Coumaric acid (trans-4-Hydroxycinnamic acid) is an isomer of cinnamic acid with oral activity. p-Coumaric acid inhibits cell proliferation and promotes apoptosis. p-Coumaric acid has antibacterial, anti-inflammatory, antioxidant and anti-tumor activities.

Carvacrol is an orally active and blood-brain barrier-permeable monoterpenic phenol that can be extract from an abundant number of aromatic plants, including thyme and oregano, possessing antioxidant, antibacterial, antifungal, anticancer, anti-inflammatory, hepatoprotective, spasmolytic, and vasorelaxant properties. Carvacrol also causes cell cycle arrest in G0/G1, downregulates Notch-1, and Jagged-1, and induces apoptosis. Carvacrol is used in low concentrations as a food flavoring ingredient and preservative, as well as a fragrance ingredient in cosmetic formulations.

Neferine is a major bisbenzylisoquinline alkaloid. Neferine strongly inhibits NF-κB activation.

Shogaol ([6]-Shogaol), an active compound isolated from Ginger (Zingiber officinale Rosc), exhibits a variety of biological activities including anticancer, anti-inflammation, and anti-oxidation.

4-hydroxyphenylacetic acid, a major microbiota-derived metabolite of polyphenols, is involved in the antioxidative action. 4-hydroxyphenylacetic acid induces expression of Nrf2.

Ginkgolic Acid is a natural compound that inhibits SUMOylation with an IC₅₀ of 3.0 μM in in vitro assay.

Paeonol is an active extraction from the root of Paeonia suffruticosa, Paeonol inhibits MAO-A and MAO-B with IC₅₀ of 54.6 μM and 42.5 μM, respectively.

DL-alpha-Tocopherol is a synthetic vitamin E, with antioxidation effect. DL-alpha-Tocopherol protects human skin fibroblasts against the cytotoxic effect of UVB.

Homovanillic acid (Vanilacetic acid) is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency.

Vanillin (p-Vanillin) is a single molecule extracted from vanilla beans and also a popular odor used widely in perfume, food and medicine.

Thymol is a TRPA1 agonist. Thymol induces cancer cell apoptosis. Thymol is the main monoterpene phenol occurring in essential oils isolated from plants belonging to the Lamiaceae family, and other plants such as those belonging to the Verbenaceae, Scrophulariaceae, Ranunculaceae and Apiaceae families. Thymol has antioxidant, anti-inflammatory, antibacterial and antifungal effects.

Umbelliferone (7-Hydroxycoumarin), a natural orally active product of the coumarin family, is a fluorescing compound which can be used as a sunscreen agent. Umbelliferone induces cell cycle arrest, apoptosis and DNA fragmentation in HepG2 cells. Umbelliferone exhibits significant anticancer effects. Umbelliferone attenuates the alteration characteristics of allergic airway inflammation. Umbelliferone displays the neuroprotective effects and cross the blood-brain barrier. Umbelliferone exhibits anti-inflammatory and antioxidant effects in chronic alcohol-fed rats.

4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC₅₀ of 160 μg/mL.

Tyramine is an amino acid that helps regulate blood pressure. Tyramine occurs naturally in the body, and it's found in certain foods.

Leonurine is an alkaloid isolated from Leonurus artemisia, with anti-oxidative and anti-inflammatory.