Classification Term: 169397
Carbamates (ontology term: 4926eefdbda421499d9c41a0a6b0800b)
found 5 associated metabolites at sub_class metabolite taxonomy ontology rank level.
Ancestor: Carbonyl compounds
Child Taxonomies: There is no child term of current ontology term.
Ethyl carbamate
Ethyl carbamate, also known as aethylurethan or uretan, belongs to the class of organic compounds known as carboximidic acids and derivatives. Carboximidic acids and derivatives are compounds containing a carboximidic group, with the general formula R-C(=NR1)OR2. Ethyl carbamate has been detected, but not quantified, in alcoholic beverages. This could make ethyl carbamate a potential biomarker for the consumption of these foods. Ethyl carbamate is formally rated as a probable carcinogen (by IARC 2A) and is also a potentially toxic compound. It is readily absorbed from the gastrointestinal tract and the skin. It also tends to induce specific mutations in the Kras oncogene in codon 61 of exon 2 including A:T transversions and A-->G transitions in the second base and A-->T transversions in the third base. Urethane, formerly marketed as an inactive ingredient in Profenil injection, was determined to be carcinogenic and was removed from the Canadian, US, and UK markets in 1963. If necessary, the person should shower and change contaminated clothing and shoes, and then must seek medical attention. In case of contact with eyes, irrigate opened eyes for several minutes under running water. Metabolism is mediated by cytochrome P450 2E1. D002491 - Central Nervous System Agents > D002492 - Central Nervous System Depressants > D000777 - Anesthetics D009676 - Noxae > D002273 - Carcinogens D000970 - Antineoplastic Agents Urethane (Ethyl carbamate), the ethyl ester of carbamic acid, is a byproduct of fermentation found in various food products. Urethane has the ability to suppress bacterial, protozoal, sea urchin egg, and plant tissue growth in vitro[1]. Urethane (Ethyl carbamate), the ethyl ester of carbamic acid, is a byproduct of fermentation found in various food products. Urethane has the ability to suppress bacterial, protozoal, sea urchin egg, and plant tissue growth in vitro[1].
Carbamic acid
Carbamic acid is occasionally found as carbamate in workers exposed to pesticides. Carbamates, particularly carbofuran, seem to be more associated with exuberant and diversified symptomatology of pesticide exposure than organophosphates. Neurological symptoms occur among farmers occupationally exposed to acetylcholinesterase-inhibiting insecticides such as carbamates. Carbamic acid products of several amines, such as beta-N-methylamino-L-alanine (BMAA), ethylenediamine, and L-cysteine have been implicated in toxicity. Studies suggested that a significant portion of amino-compounds in biological samples (that naturally contain CO2/bicarbonate) can be present as a carbamic acid. The formation of carbamate glucuronide metabolites has been described for numerous pharmaceuticals and they have been identified in all of the species commonly used in drug metabolism studies (rat, dog, mouse, rabbit, guinea pig, and human). There has been no obvious species specificity for their formation and no preference for 1 or 2 degree amines. Many biological reactions have also been described in the literature that involve the reaction of CO2 with amino groups of biomolecules. For example, CO2 generated from cellular respiration is expired in part through the reversible formation of a carbamate between CO2 and the -amino groups of the alpha and beta-chains of hemoglobin. Glucuronidation is an important mechanism used by mammalian systems to clear and eliminate both endogenous and foreign chemicals. Many functional groups are susceptible to conjugation with glucuronic acid, including hydroxyls, phenols, carboxyls, activated carbons, thiols, amines, and selenium. Primary and secondary amines can also react with carbon dioxide (CO2) via a reversible reaction to form a carbamic acid. The carbamic acid is also a substrate for glucuronidation and results in a stable carbamate glucuronide metabolite. The detection and characterization of these products has been facilitated greatly by the advent of soft ionization mass spectrometry techniques and high field NMR instrumentation. (PMID: 16268118, 17168688, 12929145).
Carbachol
S - Sensory organs > S01 - Ophthalmologicals > S01E - Antiglaucoma preparations and miotics > S01EB - Parasympathomimetics N - Nervous system > N07 - Other nervous system drugs > N07A - Parasympathomimetics > N07AB - Choline esters D018377 - Neurotransmitter Agents > D018678 - Cholinergic Agents > D018679 - Cholinergic Agonists D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents > D008916 - Miotics C78283 - Agent Affecting Organs of Special Senses > C29705 - Anti-glaucoma Agent D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000700 - Analgesics D020011 - Protective Agents > D002316 - Cardiotonic Agents D002317 - Cardiovascular Agents
CARBAMIC ACID
A one-carbon compound that is ammonia in which one of the hydrogens is replaced by a carboxy group. Although carbamic acid derivatives are common, carbamic acid itself has never been synthesised.