# List of compounds with carbon number 1

This is a partial list of molecules that contain 1 carbon atom.
| Chemical formula | Synonyms | CAS number |
| CAgN | silver cyanide | 506-64-9 |
| CAlH$_2$N | aluminium monocyanide | 19401-01-5 |
| CB | boron carbide | 12011-54-0 |
| CBSi | carbon monoboride monosilicide | 12628-09-0 |
| CB$_2$ | diboron carbide | 12537-86-9 |
| CB$_4$ | boron carbide | 12069-32-8 |
| CBe$_2$ | beryllium carbide | 506-66-1 |
| CBr | bromomethylidyne | 3889-77-8 |
| CBrF$_2$ | bromodifluoromethyl radical | 28882-09-9 |
| CBrN | cyanogen bromide | 506-68-3 |
| CBrNO | bromine isocyanate | 3644-72-2 |
| CBrNO | bromoformonitrile oxide | 74213-25-5 |
| CBrNS | bromine thiocyanate | 29284-59-1 |
| CBrNSe | selenium bromide cyanide | 80039-77-6 |
| CBr$_2$ | dibromomethylene | 4371-77-1 |
| CBr$_2$ClF | chloro dibromo fluoro methane | 353-55-9 |
| CBr$_2$O | carbonyl bromide | 593-95-3 |
| CBr$_3$ | tribromomethyl radical | 4471-18-5 |
| CBr$_3$Cl | tribromochloromethane | 594-15-0 |
| CBr$_4$ | carbon tetrabromide | 558-13-4 |
| CCe | cerium monocarbide | 12011-58-4 |
| CCeRh | monocerium monorhodium monocarbide | 70378-91-5 |
| CCeRu | monocerium monoruthenium monocarbide | 70378-92-6 |
| CCeSi | cerium monocarbide monosilicide | 51257-45-5 |
| CCl | chloromethylidyne | 3889-76-7 |
| CClF | chlorofluoromethylene | 1691-88-9 |
| CClFO | carbonic chloride fluoride | 353-49-1 |
| CClFS | carbonothioic chloride fluoride | 1495-18-7 |
| CClF$_2$ | chlorodifluoromethyl radical | 1691-89-0 |
| CClF$_3$O$_2$S | trifluoromethanesulfonyl chloride | 421-83-0 |
| CClF$_3$S | trifluoromethanesulfenyl chloride | 421-17-0 |
| CClN | cyanogen chloride | 506-77-4 |
| CClNO | chlorine isocyanate | 13858-09-8 |
| CClNS | chlorine thiocyanate | 5961-98-8 |
| CClNSe | selenium chloride cyanide | 80039-76-5 |
| CClO | carbonyl chloride | 2602-42-8 |
| CCl$_2$ | dichloromethylene | 1605-72-7 |
| CCl$_2$F | dichlorofluoromethyl radical | 1691-90-3 |
| CCl$_2$F$_2$ | dichlorodifluoromethane | 75-71-8 |
| CCl$_2$O | phosgene | 75-44-5 |
| CCl$_2$OS | chlorocarbonylsulfenyl chloride | 2757-23-5 |
| CCl$_2$S | carbonothioic dichloride | 463-71-8 |
| CCl$_2$S$_2$ | chlorothioformylsulfenylchloride | 72087-91-3 |
| CCl$_3$ | trichloromethyl radical | 3170-80-7 |
| CCl$_3$F | trichloromonofluoromethane | 75-69-4 |
| CCl$_3$NO$_2$ | chloropicrin | 76-06-2 |
| CCl$_4$ | carbon tetrachloride | 56-23-5 |
| CCs$_2$O$_3$ | dicesium carbonate | 29703-01-3 |
| CCuN | copper cyanide | 544-92-3 |
| CEuN | europium cyanide | 50647-38-6 |
| CF | fluoromethylidyne | 3889-75-6 |
| CFN | cyanogen fluoride | 1495-50-7 |
| CFO | fluoroformyl radical | 1871-24-5 |
| CF$_2$ | difluoromethylene | 2154-59-8 |
| CF$_2$NOP | phosphorisocyanatidous difluoride | 461-59-6 |
| CF$_2$NP | phosphorocyanidous difluoride | 14118-40-2 |
| CF$_2$N$_2$ | difluorocyanamide | 7127-18-6 |
| CF$_2$N$_2$O$_4$ | difluorodinitromethane | 1185-11-1 |
| CF$_2$O | carbonyl fluoride | 353-50-4 |
| CF$_2$S | thiocarbonyl fluoride | 420-32-6 |
| CF$_3$ | trifluoromethyl radical | 2264-21-3 |
| CF$_3$NO | trifluoronitrosomethane | 334-99-6 |
| CF$_3$NO$_4$ | trifluoromethyl peroxynitrate | 50311-48-3 |
| CF$_4$ | carbon tetrafluoride | 75-73-0 |
| CF$_4$O | trifluoromethyl hypofluorite | 373-91-1 |
| CF$_5$N | pentafluoromethylamine | 335-01-3 |
| CF$_5$N$_3$ | pentafluoroguanidine | 10051-06-6 |
| CF$_6$N$_2$ | hexafluoromethanediamine | 4394-93-8 |
| CF$_7$N$_3$ | heptafluoromethanetriamine | 14362-68-6 |
| CF$_8$N$_4$ | octafluoromethanetetramine | 17125-65-4 |
| CGaN | gallium monocyanide | 51750-59-5 |
| CGe | germanium monocarbide | 12334-26-8 |
| CGeSi | germanium carbide silicide | 12011-72-2 |
| CGe$_3$ | trigermanium monocarbide | 61349-30-2 |
| CH | methylidyne radical | 3315-37-5 |
| CHBrClF | bromochlorofluoromethane | 593-98-6 |
| CHBr$_2$ | dibromomethyl radical | 14362-13-1 |
| CHCl | chloromethylene | 2108-20-5 |
| CHClF | chlorofluoromethyl radical | 33272-71-8 |
| CHClO | formyl chloride | 2565-30-2 |
| CHCl$_2$ | dichloromethyl radical | 3474-12-2 |
| CHCl$_3$ | chloroform | 67-66-3 |
| CHCl$_3$O$_2$S | dichloromethanesulfonyl chloride | 41197-29-9 |
| CHCl$_5$Si | dichloromethyl trichloro silane | 1558-24-3 |
| CHF | fluoromethylene | 13453-52-6 |
| CHFN$_2$O$_4$ | fluorodinitromethane | 7182-87-8 |
| CHFO | formyl fluoride | 1493-02-3 |
| CHF$_2$ | difluoromethyl radical | 2670-13-5 |
| CHF$_3$ | trifluoromethane | 75-46-7 |
| CHF$_3$S | trifluoromethanethiol | 1493-15-8 |
| CHLiO$_2$ | lithium formate | 556-63-8 |
| CHLiO$_2$ | lithium formate | 6108-23-2 |
| CHN | hydrogen cyanide | 74-90-8 |
| CHN | hydrogen isocyanide | 6914-07-4 |
| CHNO | cyanic acid | 420-05-3 |
| CHNO | fulminic acid | 506-85-4 |
| CHNO | isocyanic acid | 75-13-8 |
| CHNS | isothiocyanic acid | 3129-90-6 |
| CHNaO$_2$ | sodium formate | 141-53-7 |
| CHO | formyl radical | 2597-44-6 |
| CHO$_2$ | hydrocarboxyl radical | 2564-86-5 |
| CHO$_2$Rb | rubidium formate | 3495-35-0 |
| CHO$_2$Tl | thallium formate | 992-98-3 |
| CHP | methinophosphide | 6829-52-3 |
| CHS | thioformyl radical | 36058-28-3 |
| CH$_2$ | methylene | 2465-56-7 |
| CH$_2$Br | bromomethyl radical | 16519-97-4 |
| CH$_2$BrI | bromoiodomethane | 557-68-6 |
| CH$_2$BrNO$_2$ | bromonitromethane | 563-70-2 |
| CH$_2$Cl | chloromethyl radical | 6806-86-6 |
| CH$_2$ClI | chloroiodomethane | 593-71-5 |
| CH$_2$ClNO$_2$ | chloronitromethane | 1794-84-9 |
| CH$_2$Cl$_2$ | methylene chloride | 75-09-2 |
| CH$_2$Cl$_2$O$_2$S | chloromethanesulfonyl chloride | 3518-65-8 |
| CH$_2$F | fluoromethyl radical | 3744-29-4 |
| CH$_2$F$_2$O$_4$S$_2$ | methanedisulfonyl fluoride | 42148-23-2 |
| CH$_2$N$_2$ | cyanamide | 420-04-2 |
| CH$_2$N$_2$O$_4$ | dinitromethane | 625-76-3 |
| CH$_2$N$_6$O$_2$ | nitroguanylazide | 62154-79-4 |
| CH$_2$O | formaldehyde | 50-00-0 |
| CH$_2$O | hydroxymethylene | 19710-56-6 |
| CH$_2$O | polyoxymethylene | 9002-81-7 |
| CH$_2$OS | sulfine | 40100-16-1 |
| CH$_2$O$_2$ | dioxirane | 157-26-6 |
| CH$_2$O$_2$ | formic acid | 64-18-6 |
| CH$_2$O$_3$ | carbonic acid | 463-79-6 |
| CH$_2$S | thioformaldehyde | 865-36-1 |
| CH$_3$ | methyl radical | 2229-07-4 |
| CH$_3$AsCl$_2$ | methyldichloroarsine | 593-89-5 |
| CH$_3$BBrClO | methoxybromochloroborane | 38481-11-7 |
| CH$_3$BBrFO | methoxybromofluoroborane | 38481-08-2 |
| CH$_3$BBr$_2$ | methylboron dibromide | 17933-16-3 |
| CH$_3$BBr$_2$S | methylthiodibromoborane | 30009-65-5 |
| CH$_3$BClFO | methoxychlorofluoroborane | 38481-06-0 |
| CH$_3$BCl$_2$ | methyldichloroborane | 7318-78-7 |
| CH$_3$BCl$_2$O | methoxydichloroborane | 867-46-9 |
| CH$_3$BCl$_2$S | methylthiothichlroborane | 29878-05-5 |
| CH$_3$BFIO | fluoroiodomethoxyborane | 38481-10-6 |
| CH$_3$BF$_2$O | methoxydifluoroborane | 381-59-9 |
| CH$_3$BF$_2$S | methylthiodifluoroborane | 381-60-2 |
| CH$_3$BI$_2$O | methoxydiiodoborane | 29878-00-0 |
| CH$_3$BI$_2$S | methylthiodiiodoborane | 27545-34-2 |
| CH$_3$Br | methyl bromide | 74-83-9 |
| CH$_3$Cl | methyl chloride | 74-87-3 |
| CH$_3$ClFOP | methylphosphonyl chlorofluoride | 753-71-9 |
| CH$_3$ClO | methyl hypochlorite | 593-78-2 |
| CH$_3$ClO$_2$S | methanesulfonyl chloride | 124-63-0 |
| CH$_3$ClS | methanesulfenylchloride | 5813-48-9 |
| CH$_3$Cl$_2$OP | methoxy dichloro phosphine | 3279-26-3 |
| CH$_3$Cl$_2$OP | methyl phosphonic dichloride | 676-97-1 |
| CH$_3$Cl$_2$OPS | methylthiophosphorylchloride | 18281-76-0 |
| CH$_3$Cl$_2$O$_2$P | methyl dichlorophosphate | 677-24-7 |
| CH$_3$Cl$_2$P | methyldichlorophosphine | 676-83-5 |
| CH$_3$Cl$_2$PS | methylphosphonothioic dichloride | 676-98-2 |
| CH$_3$Cl$_3$Ge | methylgermanium trichloride | 993-10-2 |
| CH$_3$D | deuteriomethane 1 | 676-49-3 |
| CH$_3$F | methyl fluoride | 593-53-3 |
| CH$_3$FO | methyl hypofluorite | 36336-08-0 |
| CH$_3$FO$_2$S | methanesulfonyl fluoride | 558-25-8 |
| CH$_3$F$_2$OP | methylphosphonyl difluoride | 676-99-3 |
| CH$_3$I | methyl iodide | 74-88-4 |
| CH$_3$IS | methylsulfenyliodide | 86381-89-7 |
| CH$_3$N | methanimine | 2053-29-4 |
| CH$_3$NO | formamide | 75-12-7 |
| CH$_3$NO$_2$ | methyl nitrite | 624-91-9 |
| CH$_3$NO$_3$ | methyl nitrate | 598-58-3 |
| CH$_3$NS | methanethioamide | 115-08-2 |
| CH$_3$NSi | isocyano silane | 18081-38-4 |
| CH$_3$N$_3$ | methyl azide | 624-90-8 |
| CH$_3$N$_3$O$_3$ | nitrourea | 556-89-8 |
| CH$_3$N$_3$O$_4$ | methyldinitramine | 25346-05-8 |
| CH$_3$NaO | sodium methoxide | 124-41-4 |
| CH$_3$O | hydroxymethyl radical | 2597-43-5 |
| CH$_3$O | methoxy radical | 2143-68-2 |
| CH$_3$P | phosphethene | 61183-53-7 |
| CH$_3$S | mercaptomethyl radical | 17032-46-1 |
| CH$_3$S | methylthio radical | 7175-75-9 |
| CH$_3$S$_2$ | methyldithio radical | 29245-72-5 |
| CH$_3$Sn | monomethyl tin radical | 23001-26-5 |
| CH$_3$Zn | methyl zinc | 42217-98-1 |
| CH$_4$ | methane | 74-82-8 |
| CH$_4$Cl$_2$Si | methyl dichlorosilane | 20156-50-7 |
| CH$_4$N | methyl amino radical | 49784-84-1 |
| CH$_4$N$_2$ | methyl diazene | 26981-93-1 |
| CH$_4$N$_2$O | formic acid hydrazide | 624-84-0 |
| CH$_4$N$_2$O | urea | 57-13-6 |
| CH$_4$N$_2$O$_2$S | aminoiminomethanesulfinic acid | 1758-73-2 |
| CH$_4$N$_2$S | ammonium thiocyanate | 1762-95-4 |
| CH$_4$N$_2$S | thiourea | 62-56-6 |
| CH$_4$N$_2$Se | selenourea | 630-10-4 |
| CH$_4$O | methyl alcohol | 67-56-1 |
| CH$_4$OS | methanesulfenic acid | 62965-22-4 |
| CH$_4$O$_2$ | methanediol | 463-57-0 |
| CH$_4$O$_2$ | methyl peroxide | 3031-73-0 |
| CH$_4$O$_2$S | methanesulfinic acid | 17696-73-0 |
| CH$_4$O$_3$ | Orthoformic acid | 463-78-5 |
| CH$_4$O$_4$ | Orthocarbonic acid | 463-84-3 |
| CH$_4$O$_6$S$_2$ | methane disulfonic acid | 503-40-2 |
| CH$_4$S | methanethiol | 74-93-1 |
| CH$_4$S$_2$ | dimercaptomethane | 6725-64-0 |
| CH$_4$S$_2$ | methyl hydrogen disulfide | 6251-26-9 |
| CH$_5$As | methylarsine | 593-52-2 |
| CH$_5$AsO$_3$ | methyl arsonic acid | 124-58-3 |
| CH$_5$BO$_2$ | dihydroxymethylborane | 13061-96-6 |
| CH$_5$N | methylamine | 74-89-5 |
| CH$_5$NO$_2$S | methane sulfonamide | 3144-09-0 |
| CH$_5$NO$_3$S | aminomethanesulfonic acid | 13881-91-9 |
| CH$_5$N$_3$ | guanidine | 113-00-8 |
| CH$_5$N$_3$O$_3$S | thiourea nitrate | 55011-91-1 |
| CH$_5$N$_3$S | hydrazinecarbothioamide | 79-19-6 |
| CH$_5$N$_4$O$_2$ | guanidine nitrate | 506-93-4 |
| CH$_5$O$_3$P | methylphosphonic acid | 993-13-5 |
| CH$_6$ClN | methylammonium chloride | 593-51-1 |
| CH$_6$ClN$_3$O | semicarbazide hydrochloride | 563-41-7 |
| CH$_6$Ge | methyl germane | 1449-65-6 |
| CH$_6$IN | methylammonium iodide | 14965-49-2 |
| CH$_6$N | methylammonium radical | 17000-00-9 |
| CH$_6$N$_2$ | methylhydrazine | 60-34-4 |
| CH$_6$N$_2$O$_2$ | ammonium carbamate | 1111-78-0 |
| CH$_6$N$_4$ | aminoguanidine | 79-17-4 |
| CH$_6$N$_4$O | carbonic dihydrazide | 497-18-7 |
| CH$_6$N$_4$S | carbonothioic dihydrazide | 2231-57-4 |
| CH$_7$N$_3$O$_3$ | methylhydrazinium nitrate | 29674-96-2 |
| CHf | hafnium(IV) carbide | 506-64-9 |
| CI$_4$ | carbon tetraiodide | 507-25-5 |
| CIN | cyanogen iodide | 506-78-5 |
| CINO | iodine isocyanate | 3607-48-5 |
| CINS | iodine thiocyanate | 105918-65-8 |
| CINSe | iodine selenocyanate | 105918-66-9 |
| CIN$_3$O$_6$ | iodotrinitromethane | 630-70-6 |
| CIr | iridium monocarbide | 12385-37-4 |
| CKN | potassium cyanide | 151-50-8 |
| CKNS | potassium thiocyanate | 333-20-0 |
| CK$_2$O$_3$ | potassium carbonate | 584-08-7 |
| CLi$_2$O$_3$ | lithium carbonate | 554-13-2 |
| CLi$_3$ | trilithium monocarbide | 70378-93-7 |
| CLi$_4$ | carbon tetralithium | 38827-79-1 |
| CMgO$_3$ | magnesium carbonate | 546-93-0 |
| CMo | molybdenum carbide | 12011-97-1 |
| CN | cyano radical | 2074-87-5 |
| CNNa | sodium cyanide | 143-33-9 |
| CNO | isocyanato radical | 22400-26-6 |
| CNOSi | oxosilyl monocyanide | 29210-67-1 |
| CNPr | praseodymium monocyanide | 57137-34-5 |
| CNS | thiocyanato radical | 15941-77-2 |
| CNSi | silicon monocyanide | 29210-66-0 |
| CN$_2$O | nitrosyl cyanide | 4343-68-4 |
| CN$_4$ | cyanogen azide | 764-05-6 |
| CNaHO$_3$ | Sodium bicarbonate | 144-55-8 |
| CNa$_2$O$_3$ | sodium carbonate | 497-19-8 |
| CO | carbon monoxide | 630-08-0 |
| COS | carbonyl sulfide | 463-58-1 |
| COSe | carbonyl selenide | 1603-84-5 |
| CO$_2$ | carbon dioxide | 124-38-9 |
| CO$_3$ | carbon trioxide | 3812-32-6 |
| CP | carbon monophosphide | 12326-85-1 |
| CPSi | silicon monocarbide monophosphide | 37342-74-8 |
| CP$_2$ | carbon diphosphide | 12601-93-3 |
| CRh | rhodium monocarbide | 12127-42-3 |
| CRu | ruthenium carbide | 12012-13-4 |
| CS | carbon monosulfide | 2944-05-0 |
| CSSe | thiocarbonyl selenide | 5951-19-9 |
| CS$_2$ | carbon disulfide cation | 12539-80-9 |
| CS$_2$ | carbon disulfide | 75-15-0 |
| CSe | carbon monoselenide | 16674-18-3 |
| CSe$_2$ | carbon diselenide | 506-80-9 |
| CSi | silicon monocarbide | 409-21-2 |
| CSi$_2$ | disilicon carbide | 12070-04-1 |
| CSi$_3$ | trisilicon carbide | 12326-86-2 |
| CTa | tantalum carbide | 12070-06-3 |
| CTh | thorium monocarbide | 12012-16-7 |
| CTi | titanium carbide | 12070-08-5 |
| CU | uranium monocarbide | 12070-09-6 |
| CW | tungsten carbide | 12070-12-1 |
| CZr | zirconium carbide | 12070-14-3 |

## C+H+O compounds

Each hydrogen added to a molecule can be considered as a proton plus a one-electron reduction of the redox state, while each oxygen counts as a two-electron oxidation. Thus a net addition of H$_2$O is a simple hydration with no net change in redox state and frequently occurs reversibly in aqueous solution. These relationships may be viewed in the following table (peroxides and ions are excluded; unstable or hypothetical compounds are italicized).
| | O$_0$ | O$_1$ | O$_2$ | O$_3$ | O$_4$ |
| H$_4$ | methane | methanol | methanediol | orthoformic acid | orthocarbonic acid |
| H$_3$ | methyl radical | methoxy radical | | | |
| H$_2$ | methylene | formaldehyde | formic acid | carbonic acid | |
| H$_1$ | methylidyne radical | | | | |
| H$_0$ | atomic carbon | carbon monoxide | carbon dioxide | carbon trioxide | carbon tetroxide |