Chemical Formula: C6H12O3
Chemical Formula C6H12O3
Found 153 metabolite its formula value is C6H12O3
6-Hydroxyhexanoic acid
6-Hydroxyhexanoate was identified as the immediate product of hexanoate w-hydroxylation by whole cells and was further oxidized into adipic acid and an unexpected metabolite identified as 2-tetrahydrofuranacetic acid. This same metabolite, together with adipic acid, was also detected when similarly induced cells were incubated with hexanoate or 1,6-hexanediol, but not with 6-oxohexanoate (adipic semialdehyde).Cells grown on hexanoate and incubated with 6-hydroxyhexanoate were also found to accumulate 2-tetrahydrofuranacetic acid, which was not further degraded. Utilization of 6-hydroxyhexanoate for growth was restricted to those organisms also able to utilize adipate. Similar observations were made with 1,6-hexanediol serving as the carbon source and cells obtained from one organism,Pseudomonas aeruginosa PAO, grown either on 1,6-hexanediol or 6-hydroxyhexanoate,were found to be well induced for both 6-oxohexanoate and adipate oxidation. The results indicate that 6-hydroxyhexanoate and 1,6-hexanediol are susceptible to both 1B- and w-oxidative attack; however, the former pathway appears to be of no physiological significance since it generates 2-tetrahydrofuranacetic acid as a nonmetabolizable intermediate, making w-oxidation via adipate the exclusive pathway for degradation. [HMDB] 6-Hydroxyhexanoate was identified as the immediate product of hexanoate w-hydroxylation by whole cells and was further oxidized into adipic acid and an unexpected metabolite identified as 2-tetrahydrofuranacetic acid. This same metabolite, together with adipic acid, was also detected when similarly induced cells were incubated with hexanoate or 1,6-hexanediol, but not with 6-oxohexanoate (adipic semialdehyde).Cells grown on hexanoate and incubated with 6-hydroxyhexanoate were also found to accumulate 2-tetrahydrofuranacetic acid, which was not further degraded. Utilization of 6-hydroxyhexanoate for growth was restricted to those organisms also able to utilize adipate. Similar observations were made with 1,6-hexanediol serving as the carbon source and cells obtained from one organism,Pseudomonas aeruginosa PAO, grown either on 1,6-hexanediol or 6-hydroxyhexanoate,were found to be well induced for both 6-oxohexanoate and adipate oxidation. The results indicate that 6-hydroxyhexanoate and 1,6-hexanediol are susceptible to both 1B- and w-oxidative attack; however, the former pathway appears to be of no physiological significance since it generates 2-tetrahydrofuranacetic acid as a nonmetabolizable intermediate, making w-oxidation via adipate the exclusive pathway for degradation. KEIO_ID H061
Ethyl (±)-3-hydroxybutyrate
Ethyl (±)-3-hydroxybutyrate is a flavouring ingredient. Flavouring ingredient Ethyl 3-hydroxybutyrate is a fragrance found in wine and Tribolium castaneum[1][2]. Ethyl 3-hydroxybutyrate is a fragrance found in wine and Tribolium castaneum[1][2].
D-Leucic acid
D-Leucic acid is an alpha-hydroxycarboxylic acid present in patients affected with Short-bowel syndrome (an Inborn errors of metabolism, OMIM 175200) (PMID 9766851), and in Maple Syrup Urine Disease (MSUD, an autosomal recessive inherited metabolic disorder of branched-chain amino acid) (PMID 9766851). [HMDB] D-Leucic acid is an alpha-hydroxycarboxylic acid present in patients affected with Short-bowel syndrome (an Inborn errors of metabolism, OMIM 175200) (PMID 9766851), and in Maple Syrup Urine Disease (MSUD, an autosomal recessive inherited metabolic disorder of branched-chain amino acid) (PMID 9766851). Acquisition and generation of the data is financially supported in part by CREST/JST. KEIO_ID H091 (R)-Leucic acid is an amino acid metabolite[1].
Paraldehyde
Paraldehyde is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]") D002491 - Central Nervous System Agents > D002492 - Central Nervous System Depressants > D006993 - Hypnotics and Sedatives N - Nervous system > N05 - Psycholeptics > N05C - Hypnotics and sedatives > N05CC - Aldehydes and derivatives D002491 - Central Nervous System Agents > D000927 - Anticonvulsants
2-Hydroxyhexanoic acid
A hydroxy fatty acid that is caproic (hexanoic) acid substituted by a hydroxy group at position 2. 2-Hydroxyhexanoic acid is an endogenous metabolite.
2-Hydroxycaproic acid
2-hydroxycaproic acid, also known as 2-hydroxyhexanoic acid is a hydroxy fatty acid that is caproic (hexanoic) acid substituted by a hydroxy group at position 2. It has a role as an animal metabolite. It derives from a hexanoic acid. It is a conjugate acid of a 2-hydroxyhexanoate. 2-hydroxycaproic acid is a branched-chain alpha-keto acid that have been reported in normal human blood (PMID:7130306) and in normal amniotic fluid (PMID:7076774). It has been found that 2-hydroxycaproic acid is the most significant metabolite found in the CSF of patients infected with Nocardia. Nocardia sp. is an uncommon cause of meningitis, and Nocardia meningitis has a clinical picture similar to that of tuberculous meningitis (PMID:3818936; PMID:20615997). 2-Hydroxycaproic acid is a branched-chain alpha-keto acid that have been reported in normal human blood (PMID: 7130306) and in normal amniotic fluid. (PMID: 7076774) 2-Hydroxyhexanoic acid is an endogenous metabolite.
Butoxyacetic acid
Butoxyacetic acid belongs to the family of Carboxylic Acids. These are compounds containing a carboxylic acid group with the formula -C(=O)OH.
(5R)-5-Hydroxyhexanoic acid
5-hydroxyhexanoic acid is produced during omega-oxidation of fatty acids in people unable to beta-oxidize fatty acids properly. Excessive excretion of 5-hydroxyhexanoic acid appears to be a part of Reyes syndrome. [HMDB] 5-hydroxyhexanoic acid is produced during omega-oxidation of fatty acids in people unable to beta-oxidize fatty acids properly. Excessive excretion of 5-hydroxyhexanoic acid appears to be a part of Reyes syndrome.
Threo-3-Hydroxy-2-methylbutyric acid
Threo-3-Hydroxy-2-methylbutyric acid belongs to the family of Beta Hydroxy Acids and Derivatives. These are compounds containing a carboxylic acid substituted with a hydroxyl group on the C3 carbon atom
2-Ethyl-2-Hydroxybutyric acid
2-Ethyl-2-Hydroxybutyric acid, also known as 2-ethyl-2-hydroxybutanoate or 2-et-2-hba, 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-Ethyl-2-Hydroxybutyric acid is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. 2-Ethyl-2-Hydroxybutyric acid is found in small amounts in the urine after intake of therapeutic doses of carbromal. Larger quantities are found in poisoning, hence its significance (PMID 13348692) [HMDB]
2-hydroxy-3-methylvalerate
2-Hydroxy-3-methylpentanoic acid or 2-hydroxy-3-methylvaleric acid (HMVA) is an organic acid generated by L-isoleucine metabolism. It is derived from the reduction of 2-Keto-3-methylvaleric acid (KMVA), possibly through the action of a lactate dehydrogenase (PMID: 1429566). There are 4 stereoisomers of HMVA (2S,3S-HMVA, 2R,3R-HMVA, 2S,3R-HMVA and 2R,3S-HMVA), of which the 2S,3S and 2S,3R derivatives are generally separable. HMVA is found in the urine and blood of normal individuals but in very elevated levels in patients with maple syrup urine disease (MSUD) (PMID: 1429566). Maple syrup urine disease (MSUD) is an inherited metabolic disease predominantly characterized by neurological dysfunction including psychomotor/delay/mental retardation. [HMDB] 2-Hydroxy-3-methylpentanoic acid or 2-hydroxy-3-methylvaleric acid (HMVA) is an organic acid generated by L-isoleucine metabolism. It is derived from the reduction of 2-Keto-3-methylvaleric acid (KMVA), possibly through the action of a lactate dehydrogenase (PMID: 1429566). There are 4 stereoisomers of HMVA (2S,3S-HMVA, 2R,3R-HMVA, 2S,3R-HMVA and 2R,3S-HMVA), of which the 2S,3S and 2S,3R derivatives are generally separable. HMVA is found in the urine and blood of normal individuals but in very elevated levels in patients with maple syrup urine disease (MSUD) (PMID: 1429566). Maple syrup urine disease (MSUD) is an inherited metabolic disease predominantly characterized by neurological dysfunction including psychomotor/delay/mental retardation.
2-Methyl-3-hydroxyvaleric acid
2-Methyl-3-hydroxyvaleric acid might be a urine target compound in maple syrup urine disease.
5-Hydroxyhexanoic acid
5-Hydroxyhexanoic acid is a normal dicarboxylic acid degradation product of fatty acids; however, it has been found in patients with non-ketotic dicarboxylic aciduria and one patient on a diet containing excessive amounts of medium-chain triglycerides. Increased amounts of dicarboxylic acids are excreted in human urine under conditions of medium-chain triglyceride (MCT) feeding, abnormal fatty acid oxidation (FAO) and fasting. Criteria to distinguish dicarboxylic aciduria originating from MCT feeding and other conditions are needed in urinary organic acid profiling for detecting inborn errors of metabolism. Medium-chain triglycerides (MCTs) are absorbed and metabolized differently from long-chain triglycerides (LCTs). MCTs may be useful as a dietary substitute in a variety of clinical disorders. Urinary excretion of 5-hydroxyhexanoic acid, the (omega-1) hydroxylation product, was increased during MCT feeding as compared with LCT feeding in patients with non-insulin-dependent diabetes mellitus (PMID: 6897376, 2239769, 8596483). Moreover, 5-hydroxyhexanoic acid is also found to be associated with Medium chain acyl-CoA dehydrogenase deficiency (MCADD), which is also an inborn error of metabolism. 5-Hydroxyhexanoic acid has be found to be a microbial metabolite (PMID: 20615997). 5-Hydroxyhexanoic acid is a normal dicarboxylic acid degradation product of fatty acids; however, it has been found in patients with non-ketotic dicarboxylic aciduria and one patient on a diet containing excessive amounts of medium-chain triglycerides. Increased amounts of dicarboxylic acids are excreted in human urine under conditions of medium-chain triglyceride (MCT) feeding, abnormal fatty acid oxidation (FAO) and fasting. Criteria to distinguish dicarboxylic aciduria originating from MCT feeding and other conditions are needed in urinary organic acid profiling for detecting inborn errors of metabolism. Medium-chain triglycerides (MCTs) are absorbed and metabolized differently from long-chain triglycerides (LCTs). MCTs may be useful as a dietary substitute in a variety of clinical disorders. Urinary excretion of 5-hydroxyhexanoic acid, the (omega-1) hydroxylation product, was increased during MCT feeding as compared with LCT feeding in patients with non-insulin-dependent diabetes mellitus. (PMID: 6897376, 2239769, 8596483) [HMDB]
Leucinic acid
Leucinic acid, also known as leucic acid, 2-hydroxyisocaproic acid or 2-hydroxy-4-methylvaleric 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. Leucinic acid is a valeric acid derivative having a hydroxy substituent at the 2-position and a methyl substituent at the 4-position. It is an alpha-hydroxy analogue of leucine and a metabolite of the branched-chain amino acid leucine. Leucinic acid is found in all organisms ranging from bacteria to plants to animals. Leucinic acid has been found in a patient with dihydrolipoyl dehydrogenase (DLD) deficiency (PMID: 6688766). DLD deficiency is caused by mutations in the DLD gene and is inherited in an autosomal recessive manner. A common feature of dihydrolipoamide dehydrogenase deficiency is a potentially life-threatening buildup of lactic acid in tissues (lactic acidosis), which can cause nausea, vomiting, severe breathing problems, and an abnormal heartbeat. Neurological problems are also common in this condition; the first symptoms in affected infants are often decreased muscle tone (hypotonia) and extreme tiredness (lethargy). As the problems worsen, affected infants can have difficulty feeding, decreased alertness, and seizures. Liver problems can also occur in dihydrolipoamide dehydrogenase deficiency, ranging from an enlarged liver (hepatomegaly) to life-threatening liver failure. In some affected people, liver disease, which can begin anytime from infancy to adulthood, is the primary symptom. Leucinic acid is also present in the urine of patients with short bowel syndrome (PMID: 4018104) Leucinic acid has been isolated from amniotic fluid (PMID: 6467607), and have been found in a patient with dihydrolipoyl dehydrogenase deficiency (PMID 6688766).
Hydroxyisocaproic acid
Hydroxyisocaproic acid is an end product of leucine metabolism in human tissues such as muscle and connective tissue. It belongs to 2-hydroxycarboxylic acid group of amino acid metabolites (PMID 6434570). Hydroxyisocaproic acid functions as an “anti-catabolite” and is widely used in the body building community. Chronic alpha-hydroxyisocaproic acid treatment of rats has been shown to improve muscle recovery after immobilization-induced atrophy (PMID: 23757407). Additionally, a 4-week hydroxyisocaproic acid supplementation of 1.5 g a day was shown to lead to increases in muscle mass during an intensive training period among soccer athletes (PMID: 20051111). Hydroxyisocaproic acid has also shown some potential as a topical antibiotic (PMID: 22483561). Elevated levels of 2-hydroxyisocaproic acid have been found in the urine of patients with dihydrolipoyl dehydrogenase (E3) deficiency (PMID: 6688766). Hydroxyisocaproic acid is also elevated in maple syrup urine disease, a genetic disorder, and has been shown to accelerate lipid peroxidation. It may also be an indicator of oxidative stress (PMID: 11894849). Hydroxyisocaproic acid has been found to be a metabolite of Lactobacillus and fungal species (http://jultika.oulu.fi/files/isbn9789526211046.pdf). Hydroxyisocaproic acid is derived from the metabolism of the branched-chain amino acids. It belongs to 2-hydroxycarboxylic acid group of amino acid metabolites (PMID 6434570). [HMDB] (S)-Leucic acid is an amino acid metabolite.
(R)-3-Hydroxyhexanoic acid
==(R)==-3-Hydroxyhexanoic acid is a fatty acid formed by the action of fatty acid synthases from acetyl-CoA and malonyl-CoA precursors. It is involved in the fatty acid biosynthesis. Specifically, it is the product of reaction between 3-Oxohexanoic acid and 2 enzymes; fatty-acid Synthase and 3-oxoacyl- [acyl-carrier-protein] reductase. [HMDB] (R)-3-Hydroxyhexanoic acid is a fatty acid formed by the action of fatty acid synthases from acetyl-CoA and malonyl-CoA precursors. It is involved in fatty acid biosynthesis. Specifically, it is the product of a reaction between 3-oxohexanoic acid and 2 enzymes: fatty-acid synthase and 3-oxoacyl-[acyl-carrier-protein] reductase.
(+/-)-1-Acetoxy-1-ethoxyethane
(+/-)-1-Acetoxy-1-ethoxyethane is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]")
4,4-Dimethoxy-2-butanone
4,4-Dimethoxy-2-butanone is a flavouring ingredient. Flavouring ingredient
3-hydroxyhexanoate
3-Hydroxyhexanoic acid (CAS: 10191-24-9) is a hydroxy fatty acid. In humans, fatty acids are predominantly formed in the liver and adipose tissue, and mammary glands during lactation. 3-Hydroxyhexanoic acid has been identified in the human placenta (PMID: 32033212).
Methyl 3-hydroxyisovalerate
Methyl 3-hydroxyisovalerate is a member of the class of compounds known as fatty acid methyl esters. Fatty acid methyl esters are compounds containing a fatty acid that is esterified with a methyl group. They have the general structure RC(=O)OR, where R=fatty aliphatic tail or organyl group and R=methyl group. Methyl 3-hydroxyisovalerate is soluble (in water) and an extremely weak acidic compound (based on its pKa). Methyl 3-hydroxyisovalerate can be found in bilberry and black walnut, which makes methyl 3-hydroxyisovalerate a potential biomarker for the consumption of these food products.
Ethyl (±)-3-hydroxybutyrate
Ethyl 3-hydroxybutyrate is a clear colorless liquid. (NTP, 1992) Ethyl 3-hydroxybutyrate is the fatty acid ethyl ester of 3-hydroxybutyric acid. It has a role as a metabolite. It is functionally related to a 3-hydroxybutyric acid. Ethyl 3-hydroxybutyrate is a natural product found in Opuntia ficus-indica, Camellia sinensis, and Aeromonas veronii with data available. ethyl 3-hydroxybutanoate is a metabolite found in or produced by Saccharomyces cerevisiae. Ethyl (±)-3-hydroxybutyrate is a flavouring ingredient. The fatty acid ethyl ester of 3-hydroxybutyric acid. Flavouring ingredient Ethyl 3-hydroxybutyrate is a fragrance found in wine and Tribolium castaneum[1][2]. Ethyl 3-hydroxybutyrate is a fragrance found in wine and Tribolium castaneum[1][2].
2-Hydroxyhexanoate
KEIO_ID H036 2-Hydroxyhexanoic acid is an endogenous metabolite.
6-HYDROXYCAPROIC ACID
An omega-hydroxy fatty acid comprising hexanoic acid having a hydroxy group at the 6-position.
(5R)-5-Hydroxyhexanoic acid
An (omega-1)-hydroxy fatty acid that is caproic acid in which the 5-pro-R hydrogen is replaced by a hydroxy group.
PARALDEHYDE
D002491 - Central Nervous System Agents > D002492 - Central Nervous System Depressants > D006993 - Hypnotics and Sedatives N - Nervous system > N05 - Psycholeptics > N05C - Hypnotics and sedatives > N05CC - Aldehydes and derivatives D002491 - Central Nervous System Agents > D000927 - Anticonvulsants
(R)-Leucic acid
The (R)-enantiomer of 2-hydroxy-4-methylpentanoic acid. Found in patients with short-bowel syndrome (an inborn error of metabolism), and in maple syrup urine disease, MSUD. (R)-Leucic acid is an amino acid metabolite[1].
(S)-2-hydroxy-4-methylpentanoic acid
The (S)-enantiomer of 2-hydroxy-4-methylpentanoic acid. Derived from the metabolism of the branched-chain amino acids, it belongs to the 2-hydroxycarboxylic acid group of amino acid metabolites.
DL-Leucic Acid
A valeric acid derivative having a hydroxy substituent at the 2-position and a methyl substituent at the 4-position; an alpha-hydroxy analogue of leucine. A bacterial metabolite, it has also been isolated from amniotic fluid, was found in a patient with dihydrolipoyl dehydrogenase deficiency and is present in the urine of patients with short bowel syndrome.
5-Hydroxyhexanoic acid
A medium-chain fatty acid that is hexanoic acid substituted at position 5 by a hydroxy group.
(2R,3S)-2-hydroxy-3-methylpentanoic acid
A valeric acid derivative having an (R)-hydroxy substituent at the 2-position and an (S)-methyl substituent at the 3-position; one of 4 steroisomers of 2-hydroxy-3-methylpentanoic acid, generated by isoleucine metabolism. Found at significantly higher levels than normal in patients with maple syrup urine disease (MSUD).
3-hydroxy-2,2-dimethylbutyric acid
A 3-hydroxy monocarboxylic acid that is 2,2-dimethylbutyric acid carrying a single hydroxy substituent at position 3.
(2S,3R)-3-hydroxy-2-methylpentanoic acid
A diketide with a pentanoic acid structure substituted at the alpha and beta positions by methyl and hydroxy groups respectively.