Methane
PubChem CID: 297
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| Compound Synonyms | methane, Methyl hydride, Marsh gas, Biogas, Fire Damp, 74-82-8, R 50 (refrigerant), metano, methan, tetrahydridocarbon, Methane in gaseus state, HSDB 167, 150036-83-2, BRN 1718732, UNII-OP0UW79H66, UN1971, UN1972, OP0UW79H66, CH4, CHEBI:16183, R 50, Methane-12C, AC1L18XA, CHEMBL17564, CTK2H7747, AC1Q2825, AKOS005166816, C01438, 0CB689EE-132E-4559-A597-C79A40192203, C5M, 02329_FLUKA, 14493-06-2, 295477_ALDRICH, 3B4-2254, 463035_ALDRICH, 490210_ALDRICH, 8006-14-2, AG-E-08601, AR-1A0383, AR-1A0497, Biodiesels, KST-1A1445, KST-1A1563, MolPort-018-618-244, Natural gas, EINECS 200-812-7, DTXSID8025545, EC 200-812-7, 4-01-00-00003 (Beilstein Handbook Reference), MFCD00133992, MFCD00144065, METHANE (EP MONOGRAPH), METHANE [EP MONOGRAPH], MFCD00146977, MFCD00211867, MFCD31654066, Methylidyne radical, a methyl group, GO quantum dots, Gas, natural, N-doped Grpahene, high purity SWNTs, N-doped MWCNTs, 74C, MWCNTs water paste, Flash-ignited MWNTs, Electrode pole pieces, Liquified natural gas, Synthetic natural gas, Methane [WHO-DD], rGO-NH-Carboimidazole, MWNTs water suspension, GO quantum dots powder, Nitrogen doped CMK-3, MWNTs DMSO suspension, PEG@GO, PEI@GO, MWCNTs water suspension, METHANE [HSDB], GO quantum dots(Powder), METHANE [MI], MWCNTs(long) 4-6nm, MWNTs(short) 4-6 nm, NanoIntegris Dielectic ink, GrapheitizedMWNT 8-15nm, MWCNTs(long) 5-15nm, GO quantum dots (solvent), Grapheitized MWNTs >50nm, Methane, >=99.0%, Customized MWNTs dispersion, GO quantum dots(20mg/ml), Methane, analytical standard, MWNTs(short) 5-15 nm, MWNTs(short) 8-15 nm, 4QQN74LH4O, CH2H2, CMK-3, CMK-8, MWCNTs(long) 20-30nm, MWCNTs(long) 8-15 nm, UNII-6GRV67N0U2, MWNTs(short) 20-30 nm, MWNTs(short) 30-50 nm, Nanointegris ultrapure SWCNTs, UN 1971 (Salt/Mix), UN 1972 (Salt/Mix), Graphitized MWNTs 10-20nm, Low Purity Carboxylic SWCNTs, GO quantum dots(C: 1mg/ml), Grapheitized MWNTs 20-30nm, Grapheitized MWNTs 30-50nm, Low purity Hydroxylate SWCNTs, MWNTs ethyl acetate suspension, MWNTs Butyl acetate suspension, 4XYU5U00C4, 6GRV67N0U2, Carboxyl MWCNTs(long) <8 nm, Carboxyl MWCNTs(long) 4-6nm, DTXCID705545, GO quantum dots yellow(Powder), Graphene nanopowder (6-8 nm), Industrial grade MWNTs 50 nm, MWNTs (long) 10-20 nm, Carboxyl MWCNTs(short) 4-6nm, CHEMBL2106049, Diamond nanopowder (3-4 nm), Diamond nanopowder (4-15 nm), Conductive Flexible TPU Filament, GO quantum dots yellow(1mg/ml), Graphene nanopowder (1-5 nm), High Purified Carboxylic SWCNTS, Ultrapure SWCNTs NMP dispersion, DTXSID50179391, High Purified Hydroxylate SWCNTS, Lowpurity hydroxy SWCNTs (long), NanoIntegris metallic SWCNTs70%, NanoIntegris metallic SWCNTs90%, NanoIntegris metallic SWCNTs95%, Lowpurity carboxyl SWCNTs (long), Carbon powder (20~50 micron), Graphene nanopowder (11-15 nm), Industrial grade MWNTs 10-20nm, Industrial grade MWNTs 20-30nm, Industrial grade MWNTs 50-60nm, Industrial grade MWNTs 8-15 nm, Industrial grade MWNTs 9-16 nm, MWNTs isopropyl alcohol suspension, Carboxyl MWCNTs(short) 5-15 nm, Carboxyl MWCNTs(short) 8-15 nm, Industrial grade MWCNTs 8-15 nm, NanoIntegris metallic SWCNTs 98%, NanoIntegris metallic SWCNTs 99%, High purity SWNTs 0.7-2.5 nm, Highpurity carboxyl SWCNTs (short), Industrial grade MWNTs 13-17 nm, Industrial Grade MWNTs 20-40 nm, Largeinner diameter thin-wall MWNTs, Ultrapure SWCNTs aqueous dispersion, EINECS 232-343-9, EINECS 240-383-3, High purity carboxyl SWCNTs (long), Grapheitized Carboxyl MWNTs >50 nm, Grapheitized Carboxyl MWNTs 8-15nm, GrapheitizedCarboxyl MWNTs 10-20nm, GrapheitizedCarboxyl MWNTs 20-30nm, GrapheitizedCarboxyl MWNTs 30-50nm, MFCD06411993, MFCD07370731, NA1361, NanoIntegris SWCNTs with high purity, Hydroxylate MWNTs(short) 30-50 nm, Grapheitized Hydroxylate MWNT 8-15nm, GrapheitizedHydroxylate MWNTs >50 nm, Industrial Carboxylic SWCNTs 1-2 nm, DB09278, FC31972, GrapheitizedHydroxylate MWNTs 10-20nm, GrapheitizedHydroxylate MWNTs 30-50nm, HIPCO pure Metallic Hipco SWNTs solid, Industrial Hydroxylate SWCNTs 1-2 nm, N-doped MWCNTs (N Content2.98wt%), NanoIntegris metallic SWCNTs70% solid, NanoIntegris metallic SWCNTs90% solid, NanoIntegris metallic SWCNTs95% solid, HIPCO Semiconducting Hipco SWNTs solid, N-doped MWCNTS (N Content3.00wt%), NanoIntegris semiconductive SWCNTs 90%, NanoIntegris semiconductive SWCNTs 95%, NanoIntegris semiconductive SWCNTs 98%, NanoIntegris semiconductive SWCNTs 99%, Carboxyl MWCNTs water paste (~10wt%), Grapheitized Hydroxylate MWNTs 20-30nm, High Purified Large Surface Area SWCNTS, NanoIntegris metallic SWCNTs 98% solid, NanoIntegris metallic SWCNTs 99% solid, 4H-Pyrrolo[1,2-d][1,4]oxazocine-9-carboxaldehyde,1,2,5,6-tetrahydro-6-hydroxy-4,5-dimethyl-2-oxo-, (4R,5R,6S)-rel-, Carboxyl MWCNTs water paste (~2.7wt%), DA-51585, FG157042, High-Ni Calibration series, O 38x15 mm, HIPCO pure Metallic Hipco SWNTs Aqueous, HIPCO Semiconducting Hipco SWNTs Aqueous, Methane, electronic grade, >=99.998%, PD053877, Short ultrapure SWCNTs aqueous dispersion, Ultrapure Short SWCNTs aqueous dispersion, Industrial grade carboxylation MWNTs 50nm, Methane, Messer(R) CANGas, 99.999%, NanoIntegris semiconductive SWCNTs 99.9%, Single Layer H-BN Film on SIO2 substrate, Graphite powder (Natural flakes) (1 micron), NS00004509, NS00081852, NS00093167, Carboxylic ultrapure SWCNTs aqueous dispersion, NanoIntegris semiconductive SWCNTs 90% solid, NanoIntegris semiconductive SWCNTs 95% solid, Super activated carbon nanopowder (<100 nm), EC 231-953-2, EC 231-955-3, EC 240-383-3, High concentration MWCNTs water paste(~14wt%), High purity Carboxyl SWCNTs aqueous dispersion, Industrial grade carboxylation MWNTs 20-40 nm, Industrial grade hydroxylation MWCNTs 10-30nm, Industrial grade hydroxylation MWCNTs 20-40nm, Q37129, Activated Charcoal Norit(R) , powder, from peat, NanoIntegris semiconductive SWCNTs 99.9% solid, Methane-12C, 13C-depleted, 99.9 atom % 12C, Q866179, IsoSol-S100 Pure SemiconductingSWNT+Dielectric ink, Q3333711, Q6823951, Graphitized carbon black - Partical size 100-300um, Q11172462, Graphene powder, 99% C, Nanoparticle diameter 3-10nm, High concentration carboxyl MWCNTs water paste(~13wt%), Nanointegris SWCNTs with small diameter Fe Catalyst 35%, Nanointegris SWCNTs with small diameter Fe Catalyst 5%, Nanointegris SWCNTs with small diameter Fe Catalyst15%, Methane, compressed or natural gas, compressed (with high methane content), Charcoal briquettes, shell, screenings, wood, etc. [NA1361] [Spontaneously combustible], Graphene nanoplatelets aggregates - (sub-micron particles, surface area 500m2/g, 200-812-7, MeH, Methane, compressed or natural gas, compressed (with high methane content) [UN1971] [Flammable gas], Methane, refrigerated liquid (cryogenic liquid) or natural gas, refrigerated liquid (cryogenic liquid) (with high methane content), Methane, refrigerated liquid (cryogenic liquid) or natural gas, refrigerated liquid (cryogenic liquid) (with high methane content) [UN1972] [Flammable gas] |
|---|---|
| Topological Polar Surface Area | 0.0 |
| Hydrogen Bond Donor Count | 0.0 |
| Heavy Atom Count | 1.0 |
| Description | Methane (CH4), is a gas produced by a group of colonic anaerobes, absorbed from the colon and excreted in expired air. As a result, breath CH4 excretion can be used as an indicator of the in situ activity of the methanogenic flora. All CH4 produced in human beings is a metabolic product of intestinal bacteria, and about 50% of CH4 produced in the gut is absorbed and excreted in expired air. Because there appears to be no catabolism of this gas by other colonic organisms or host cells, breath CH4 measurements provide a rapid, simple means of semi quantitatively assessing the ongoing in situ metabolism of the methanogenic flora. It could seem likely that the intracolonic activity of a variety of bacteria similarly might be assessed quantitatively via analysis of expired air. However, the application of this methodology has been confounded by the rapid catabolism of many volatile bacterial products by other bacteria or human tissue. A striking aspect of the studies of breath CH4 measurements is the enormous individual variations in the excretion of this gas. Virtually all children under 5 years of age and 66% of the adult population do not exhale appreciable quantities of CH4. The remaining 34% of the adult population has appreciable breath methane concentrations of up to 80 ppm (mean, 15.2 ppm, median, 11.8 ppm). On this basis the population can be divided into CH4 producers or nonproducers, although a more accurate term would be to define subjects as being low or high CH4 producers. The primary methanogen present in the human colon, Methanobrevibacter smithii, produces methane via a reaction that relies entirely on H2 produced by other organisms to reduce CO2 to CH4. Thus, breath CH4 concentrations might be expected to mirror breath H2 concentrations, however, the high levels of CH4 observed in the fasting state may result from H2 derived from endogenous rather than dietary substrates. A diverse assortment of conditions has been associated with a high prevalence of methane producers including diverticulosis, cystic fibrosis, high fasting serum cholesterol levels, encopresis in children, and aorto-iliac vascular disease, whereas obesity (measured as skin-fold thickness) was related inversely to methane production. The challenge that remains is to determine to what extent methanogens actively influence body physiology vs. simply serve as passive indicators of colonic function. (PMID: 16469670, Clinical Gastroenterology and Hepatology Volume 4, Issue 2, February 2006, Pages 123-129) [HMDB] |
| Isotope Atom Count | 0.0 |
| Molecular Complexity | 0.0 |
| Database Name | cmaup_ingredients;fooddb_chem_all;hmdb_chem_all;pubchem |
| Defined Atom Stereocenter Count | 0.0 |
| Iupac Name | methane |
| Prediction Hob | 1.0 |
| Class | Saturated hydrocarbons |
| Xlogp | 0.6 |
| Superclass | Hydrocarbons |
| Subclass | Alkanes |
| Molecular Formula | CH4 |
| Prediction Swissadme | 0.0 |
| Inchi Key | VNWKTOKETHGBQD-UHFFFAOYSA-N |
| Fcsp3 | 1.0 |
| Rotatable Bond Count | 0.0 |
| State | Liquid |
| Synonyms | Adsorbit, Anthrasorb, Aquadag, Aroflow, Arogen, Arotone, Arovel, Arrow, Atlantic, Biogas, Cancarb, Canesorb, Canlub, Carbene, Carbodis, Carbolac, Carbomet, Carbone, carbonium, carbono, Carbosieve, Cecarbon, CH4, Collocarb, Conductex, Continex, Croflex, Crolac, Darco, Degussa, Electrographite, Elftex, Essex, Excelsior, Farbruss, Fecto, Filtrasorb, Fire Damp, Flamruss, Furnal, Furnex, Gastex, Grafoil, Grosafe, Huber, Humenegro, Hydrodarco, Kohlenstoff, Korobon, Kosmink, Kosmobil, Kosmolak, Kosmos, Kosmotherm, Kosmovar, Lampblack, Magecol, Marsh gas, Metanex, Metano, methan, Methane in gaseus state, Methyl hydride, Methylene, methylidyne, Micronex, Modulex, Molacco, Neotex, Nuchar, Papyex, Pelletex, Philblack, Plumbago, Printex, R 50, Rebonex, Regent, Schungite, Sevacarb, Shungite, Spheron, Statex, Superba, Thermatomic, Thermax, Thermblack, Tinolite, Watercarb, Acticarbone, Activated charcoal, Charcoal activated, Methan, Carbonium, Carbono, Fire dAMP, Methane in gaseus STate, Methylidyne |
| Compound Name | Methane |
| Kingdom | Organic compounds |
| Prediction Hob Swissadme | 0.0 |
| Exact Mass | 16.0313 |
| Formal Charge | 0.0 |
| Monoisotopic Mass | 16.0313 |
| Hydrogen Bond Acceptor Count | 0.0 |
| Molecular Weight | 16.043 |
| Covalent Unit Count | 1.0 |
| Total Atom Stereocenter Count | 0.0 |
| Total Bond Stereocenter Count | 0.0 |
| Molecular Framework | Aliphatic acyclic compounds |
| Esol | -0.3489666 |
| Inchi | InChI=1S/CH4/h1H4 |
| Smiles | C |
| Defined Bond Stereocenter Count | 0.0 |
| Taxonomy Direct Parent | Alkanes |
- 1. Outgoing r'ship
FOUND_INto/from Ardisia Pusilla (Plant) Rel Props:Source_db:cmaup_ingredients - 2. Outgoing r'ship
FOUND_INto/from Polygala Tenuifolia (Plant) Rel Props:Source_db:cmaup_ingredients - 3. Outgoing r'ship
FOUND_INto/from Scopolia Japonica (Plant) Rel Props:Source_db:cmaup_ingredients