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Benzoic acid appears as a white crystalline solid. Slightly soluble in water. The primary hazard is the potential for environmental damage if released. Immediate steps should be taken to limit spread to the environment. Used to make other chemicals, as a food preservative, and for other uses. Benzoic acid is a compound comprising a benzene ring core carrying a carboxylic acid substituent. It has a role as an antimicrobial food preservative, an EC 3.1.1.3 (triacylglycerol lipase) inhibitor, an EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor, a plant metabolite, a human xenobiotic metabolite, an algal metabolite and a drug allergen. It is a conjugate acid of a benzoate. A fungistatic compound that is widely used as a food preservative. It is conjugated to GLYCINE in the liver and excreted as hippuric acid. As the sodium salt form, sodium benzoate is used as a treatment for urea cycle disorders due to its ability to bind amino acids. This leads to excretion of these amino acids and a decrease in ammonia levels. Recent research shows that sodium benzoate may be beneficial as an add-on therapy (1 gram/day) in schizophrenia. Total Positive and Negative Syndrome Scale scores dropped by 21% compared to placebo. Benzoic acid is a Nitrogen Binding Agent. The mechanism of action of benzoic acid is as an Ammonium Ion Binding Activity. Benzoic Acid is a natural product found in Desmos chinensis, Paeonia emodi, and other organisms with data available. Benzoic acid, C6H5COOH, is a colourless crystalline solid and the simplest aromatic carboxylic acid. Benzoic acid occurs naturally free and bound as benzoic acid esters in many plant and animal species. Appreciable amounts have been found in most berries (around 0.05%). Cranberries contain as much as 300-1300 mg free benzoic acid per kg fruit. Benzoic acid is a fungistatic compound that is widely used as a food preservative. It often is conjugated to glycine in the liver and excreted as hippuric acid. Benzoic acid is a byproduct of phenylalanine metabolism in bacteria. It is also produced when gut bacteria process polyphenols (from ingested fruits or beverages). A fungistatic compound that is widely used as a food preservative. It is conjugated to GLYCINE in the liver and excreted as hippuric acid. See also: Salicylic Acid (active moiety of); Benzoyl Peroxide (active moiety of); Sodium Benzoate (active moiety of) ... View More ...

4-Hydroxybenzaldehyde, also known as 4-formylphenol or 4-hydroxybenzenecarbonal, belongs to the class of organic compounds known as hydroxybenzaldehydes. These are organic aromatic compounds containing a benzene ring carrying an aldehyde group and a hydroxyl group. A hydroxybenzaldehyde that is benzaldehyde substituted with a hydroxy group at position C-4. 4-Hydroxybenzaldehyde exists in all living organisms, ranging from bacteria to humans. 4-Hydroxybenzaldehyde is a sweet, almond, and balsam tasting compound. 4-Hydroxybenzaldehyde is found, on average, in the highest concentration within vinegars and oats. 4-Hydroxybenzaldehyde has also been detected, but not quantified, in several different foods, such as cardoons, colorado pinyons, oyster mushrooms, common chokecherries, and potato. This could make 4-hydroxybenzaldehyde a potential biomarker for the consumption of these foods.

A cyclic ketone that is cyclohepta-2,4,6-trien-1-one substituted by a hydroxy group at position 2. It is a toxin produced by the agricultural pathogen Burkholderia plantarii." []

2-Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma (PMID 16351159), and is normally found with increased levels after consumption of many nutrients and drugs, i.e.: cranberry juice (PMID 14733499), aspirin ingestion. (PMID 3342084) It has been found associated with idiopathic oro-facial pain due to stress (oxidative stress might enhance the production of free radicals); it has been suggested that OH radicals are responsible for the production of many systemic and local tissue injury diseases which may initially manifest as pain syndrome, and 2-Pyrocatechuic acid is a biological marker for the detection and quantification of OH radicals, and patients had significantly increased circulating levels of 2-Pyrocatechuic acid after aspirin ingestion than control subjects. (PMID 7748148).

Phenyl hydrogen sulfate is an aryl sulfate that is phenol bearing an O-sulfo substituent. It has a role as a human xenobiotic metabolite. It is functionally related to a phenol. It is a conjugate acid of a phenyl sulfate. Aryl sulfate is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Phenyl hydrogen sulfate is a natural product found in Trypanosoma brucei with data available.

Phenol sulphate, also known as phenylsulfate or aryl sulphate, belongs to the class of organic compounds known as phenylsulfates. Phenylsulfates are compounds containing a sulfate group conjugated to a phenyl group. In normal humans, phenol sulphate is primarily a gut-derived metabolite that arises from the activity of the bacterial enzyme tyrosine phenol-lyase, which is responsible for the synthesis of phenol from dietary tyrosine (PMID: 31015435). Phenol sulphate can also arise from the consumption of phenol or from phenol poisoning (PMID: 473790). Phenol sulphate is produced from the conjugation of phenol with sulphate in the liver. In particular, phenol sulphate can be biosynthesized from phenol and phosphoadenosine phosphosulfate through the action of the enzyme sulfotransferase 1A1 in the liver. Phenol sulphate can be found in most mammals (mice, rats, sheep, dogs, humans) and likely most animals. Phenol sulphate is a uremic toxin (PMID: 30068866). It is a protein-bound uremic solute that induces reactive oxygen species (ROS) production and decreases glutathione levels, rendering cells vulnerable to oxidative stress (PMID: 29474405). In experimental models of diabetes, phenol sulphate administration has been shown to induce albuminuria and podocyte damage. In a diabetic patient cohort, phenol sulphate levels were found to significantly correlate with basal and predicted 2-year progression of albuminuria in patients with microalbuminuria (PMID: 31015435).

Protocatechuic acid, also known as protocatechuate or 3,4-dihydroxybenzoate, belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups. The enzyme protocatechuate 3,4-dioxygenase uses 3,4-dihydroxybenzoate and O2 to produce 3-carboxy-cis,cis-muconate. Protocatechuic acid is a drug. In the analogous hardening of the cockroach ootheca, the phenolic substance concerned is protocatechuic acid. Protocatechuic acid is a mild, balsamic, and phenolic tasting compound. Outside of the human body, protocatechuic acid is found, on average, in the highest concentration in a few different foods, such as garden onions, cocoa powders, and star anises and in a lower concentration in lentils, liquors, and red raspberries. Protocatechuic acid has also been detected, but not quantified in several different foods, such as cloud ear fungus, american pokeweeds, common mushrooms, fruits, and feijoa. This could make protocatechuic acid a potential biomarker for the consumption of these foods. It is also found in Allium cepa (17,540 ppm). It is a major metabolite of antioxidant polyphenols found in green tea. Similarly, PCA was reported to increase proliferation and inhibit apoptosis of neural stem cells. In vitro testing documented antioxidant and anti-inflammatory activity of PCA, while liver protection in vivo was measured by chemical markers and histological assessment.

A hydroxybenzaldehyde carrying a hydroxy substituent at position 3." []

Gentisic acid, also known as gentisate or 2,5-dioxybenzoate, belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups. Gentisic acid is also classified as a dihydroxybenzoic acid. It is a derivative of benzoic acid and a minor (1%) product of the metabolic break down of aspirin, which is excreted by the kidneys. Gentisic acid is found in essentially all organisms ranging from bacteria to fungi to plants to animals. Gentisic acid has been associated with a number of useful effects on human health and exhibits anti-inflammatory, antigenotoxic, hepatoprotective, neuroprotective, antimicrobial, and especially antioxidant activities (PMID: 31825145). It is widely distributed in plants as a secondary plant product such as Gentiana spp., Citrus spp., Vitis vinifera, Pterocarpus santalinus, Helianthus tuberosus, Hibiscus rosa-sinensis, Olea europaea, and Sesamum indicum and in fruits such as avocados, batoko plum, kiwi fruits, apple, bitter melon, black berries, pears, and some mushrooms (PMID: 31825145). Gentisic acid is found in higher concentrations in a number of foods such as tarragons, common thymes, and common sages and in a lower concentration in grape wines, rosemaries, and sweet marjorams. Gentisic acid has also been shown to act as a pathogen-inducible signal for the activation of plant defenses in tomato plants and cucumbers (PMID: 16321412; https://doi.org/10.1094/MPMI.1999.12.3.227).

4,6-Dihydroxyquinoline is the product of the conversion of 5-hydroxykynurenamine by the enzyme monoamine oxidase, both metabolites from the 5-hydroxytryptophan metabolism. (PMIDs 7160021, 312499).

p-Toluquinone is a natural product found in Hydropisphaera erubescens, Penicillium solitum, and Uloma tenebrionoides with data available.

2,6-dihydroxybenzoic acid is a secondary metabolite of salicylic acid which has been hydrolyzed by liver enzymes during phase I metabolism.

Zwitterionic form of D-tryptophan having an anionic carboxy group and a protonated alpha-amino group; major species at pH 7.3." []

3,4-Methylenedioxybenzoic acid is found in herbs and spices. 3,4-Methylenedioxybenzoic acid is isolated from Piper longum (long pepper

|FRAME: PHENOL Phenol| is an organic compound consisting of a phenyl group (-C₆H₅) bonded to a hydroxyl group.The word phenol is also used to refer to any compound that contains a six-membered aromatic ring, bonded directly to a hydroxyl group (-OH). Thus, |FRAME: Phenols phenols| are a class of organic compounds of which the phenol compound is the simplest member.

A benzenedicarboxylic acid that is benzene substituted by carboxy groups at position 1 and 3. One of three possible isomers of benzenedicarboxylic acid, the others being phthalic and terephthalic acids." []

An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-tryptophan; major species at pH 7.3." []

Coumarinic acid, also known as cis-o-coumaric acid or cis-o-hydroxycinnamic acid, is a hydroxy derivative of cinnamic acid. Cinnamic acid and its derivatives are used as important components in flavours, perfumes, synthetic indigo, and pharmaceuticals. There are three isomers of coumaric acid: o-coumaric acid, m-coumaric acid, and p-coumaric acid. These isomers differ by the position of the hydroxy substitution. p-Coumaric acid is the most abundant isomer in nature (Wikipedia). Coumarinic acid is found in pomegranate.

Gliomasolide C

Gallicynoic acid F

A dicarboxylic acid that is malic acid (2-hydroxysuccinic acid) in which the hydrogen at position 2 is substituted by an isopropyl group." []

3-trifluoromethylaniline appears as a colorless liquid with a fishlike odor. Insoluble in water and denser than water. Toxic by ingestion and inhalation. Used to make dyes and pharmaceuticals.

2-Isopropylmalic acid (CAS: 3237-44-3), also known as 3-carboxy-3-hydroxyisocaproic acid, belongs to the class of organic compounds known as hydroxy fatty acids. These are fatty acids in which the chain bears a hydroxyl group. 2-Isopropylmalic acid is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. 2-Isopropylmalic acid is an alpha-hydroxy organic acid regularly occurring in the urine of healthy individuals (PMID: 2338430, 544608), and in hemofiltrates (PMID: 7251751). 2-Isopropylmalic acid is elevated during fasting and diabetic ketoacidosis (PMID: 1591279). It is also a metabolite found in Acetobacter (PMID: 6035258).

Phenol, is a toxic, colourless crystalline solid with a sweet tarry odor that resembles a hospital smell. It is commonly used as an antiseptic and disinfectant. It is active against a wide range of micro-organisms including some fungi and viruses, but is only slowly effective against spores. It has been used to disinfect skin and to relieve itching. Phenol is also used in the preparation of cosmetics including sunscreens, hair dyes, and skin lightening preparations. It is also used in the production of drugs (it is the starting material in the industrial production of aspirin), weedkillers, and synthetic resins. Phenol can be found in areas with high levels of motor traffic, therefore, people living in crowded urban areas are frequently exposed to traffic-derived phenol vapor. The average (mean +/- SD) phenol concentration in urine among normal individuals living in urban areas is 7.4 +/- 2.2 mg/g of creatinine. Exposure of the skin to concentrated phenol solutions causes chemical burns which may be severe; in laboratories where it is used, it is usually recommended that polyethylene glycol solution is kept available for washing off splashes. Notwithstanding the effects of concentrated solutions, it is also used in cosmetic surgery as an exfoliant, to remove layers of dead skin (Wikipedia). In some bacteria phenol can be directly synthesized from tyrosine via the enzyme tyrosine phenol-lyase [EC:4.1.99.2]. It can be produced by Escherichia and Pseudomonas. Phenol has been identified as a uremic toxin according to the European Uremic Toxin Working Group (PMID: 22626821).

[4]-Gingerdiol 3,5-diacetate is found in herbs and spices. [4]-Gingerdiol 3,5-diacetate is a constituent of ginger (Zingiber officinale).