Classification Term: 169670
Oxepanes (ontology term: 09d8164caa922c3d4dc83442620dc58f)
found 7 associated metabolites at sub_class metabolite taxonomy ontology rank level.
Ancestor: Oxepanes
Child Taxonomies: There is no child term of current ontology term.
Succinic anhydride
Succinic anhydride, also called dihydro-2,5-furandione, is an organic compound with the molecular formula C4H4O3. It is the acid anhydride of succinic acid
Tetrahydrofuran
Tetrahydrofuran (THF) is a cyclic ether. It is a colorless, water-miscible organic liquid with low viscosity and a smell similar to diethyl ether. At low concentrations it has a faint, fruity aroma. It is one of the most polar ethers. THF is naturally present in coffee aroma, floured chickpeas, and cooked chicken. It is used in the manufacture of polymers as well as agricultural, pharmaceutical, and commodity chemicals. Because of its widespread use (industrially) and its presence in many foods, THF is a contaminant of exposure and can appear in human biofluids. THF oxidizes readily, which can lead to instability and result in cytotoxicity. In chemical synthesis applications, THF is often used for hydroborations used to synthesize primary alcohols. THF is frequently used as a solvent for Grignard reagents because of the oxygen atoms ability to coordinate to the magnesium ion component of the Grignard reagent (an organometallic chemical reaction involving alkyl- or aryl-magnesium halides). THF is often used in polymer science. For example, it can be used to dissolve rubber prior to determining its molecular mass using gel permeation chromatography. THF tends to form peroxides on storage in air. (PMID: 16999122, 12742700, 14619948). THF can be degraded by certain strains of Rhodococcus bacteria (PMID: 19230656). Tetrahydrofuran (THF) is a contaminant of exposure and appears in human biofluids. The Food and Drug Administration (FDA) has announced recommendations to revise the permitted daily exposures for THF, and so has the International Conference on Harmonisation. THF oxidizes readily, which can lead to instability and result in cytotoxicity. It is a colourless low-viscosity liquid with a smell similar to diethyl ether and is one of the most polar ethers. Tetrahydrofuran is essentially considered in occupational toxicology, and acute poisoning cases are extremely rare. THF is often used for hydroborations used to synthesize primary alcohols. THF is often used as a solvent for Grignard reagents because of the oxygen atoms ability to coordinate to the magnesium ion component of the Grignard reagent (an organometallic chemical reaction involving alkyl- or aryl-magnesium halides). THF is often used in polymer science. For example, it can be used to dissolve rubber prior to determining its molecular mass using gel permeation chromatography. THF tends to form peroxides on storage in air. (wikipedia, PMID: 16999122, 12742700, 14619948) [HMDB]
Dinotefuran
D010575 - Pesticides > D007306 - Insecticides > D000073943 - Neonicotinoids D016573 - Agrochemicals CONFIDENCE standard compound; EAWAG_UCHEM_ID 3108 Dinotefuran is an insecticide of the neonicotinoid class, its mechanism of action involves disruption of the insect's nervous system by inhibiting nicotinic acetylcholine receptors. Target: nAChR, Antiparasitic
Glucosan
Glucosan is a monosaccharide anhydride compound present in biomass combustion smoke, and is a tracer for biomass burning sources in atmospheric aerosol particles. A product of cellulose combustion; when cellulose is heated to over 300 degree centigrade, it undergoes various pyrolytic processes, yielding a highly combustible tar, a major constituent of which is glucosan, a dehydrated glucose containing a ketal functional group.; Glucosan is a saccharide constituent of human urine, detected with one-dimensional thin-layer chromatography, and further studied by gas chromatography-mass spectrometry. It was identified in approximately 20\\\% of all urine samples investigated. Excretory levels varied widely from zero up to 5.3 mmol/l. (PMID: 3757263, 16448658, 16317539). Glucosan is found in sweet orange. Levoglucosan (1,6-Anhydro-β-D-glucopyranose) is an anhydrosugar produced through glucan pyrolysis and is widely found in nature[1].
