Empirical Formula |
Name | Isotopic Species |
CA Number | Reference |
---|---|---|---|---|
AlCN | Aluminum isocyanide | AlCN a | [61192-70-9] | Ziu02 |
AlCl | Aluminum monochloride | Al35Cl a | [13595-81-8] | Cer87c |
Al37Cl a | ||||
AlF | Aluminum monofluoride | AlF a | [13595-82-9] | Cer87c |
CF+ | Flouromethyliumylidene | CF+ | [33412-11-2] | Neu06 |
CH | Methylidyne | CH | [3315-37-5] | Ryd74, McK40 b |
CHN | Hydrocyanic acid (hydrogen cyanide) | HCN | [74-90-8] | Sny71a |
H13CN | ||||
HC15N | ||||
DCN | ||||
CHN | Hydroisocyanic acid (hydrogen isocyanide) | HNC | [6914-07-4] | Sny71 |
H15NC | ||||
HN13C | ||||
DNC | ||||
D15NC | ||||
CHNO | Isocyanic acid | HNCO | [75-13-8] | Sny71 |
DNCO | ||||
CHNS | Isothiocyanic acid | HNCS | [3129-90-6] | Fre79 |
CHO | Oxomethyl (formyl) | HCO | [2597-44-6] | Sny76 |
CHO+ | Oxomethylium (formylium) | HCO+ | [17030-74-9] | Buh70 |
H13CO+ | ||||
HC17O+ | ||||
HC18O+ | ||||
DCO+ | ||||
D13CO+ | ||||
CHO+ | Hydroxymethylidyne | HOC+ | [60528-75-8] | Woo83, Ziu95a |
CHO2+ | Hydroxyoxomethylium | HOCO+ | [638-71-1] | Tha81 |
CHP | Phosphaethyne | HCP | [6829-52-3] | Agú07 |
CHS+ | Thiooxomethylium | HCS+ | [59348-25-3] | Tha81 |
CH2 | Methylene | CH2 | [2465-56-7] | Hol89, Hol95 |
CH2N+ | Iminomethylium | HCNH+ | [38263-97-7] | Ziu86a |
CH2N | Methylene amidogen | CH2N | [15845-29-1] | Ohi94 |
CH2N2 | Cyanamide | NH2CN | [420-04-2] | Tur75a |
CH2O | Formaldehyde (methanal) | H2CO | [50-00-0] | Sny69 |
H213CO | ||||
H2C18O | ||||
HDCO | ||||
D2CO | ||||
CH2O2 | Formic acid | HCOOH | [64-18-6] | Zuc71, Win75 |
H13COOH | ||||
HCOOD | ||||
DCOOH | ||||
CH2S | Methanethial (thioformaldehyde) | H2CS | [865-36-1] | Sin73 |
H213CS | ||||
H2C34S | ||||
HDCS | ||||
D2CS | ||||
CH3 | Methyl | CH3a | [2229-07-4] | Feu00 |
CH3N | Methanimine | CH2NH | [2053-29-4] | God73 |
13CH2NH | ||||
CH3NO | Formamide | NH2CHO | [75-12-7] | Rub71 |
NH213CHO | ||||
CH3O+ | Hydroxy methylium ion | H2COH+ | [17691-31-5] | Ohi96 |
(protonated formaldehyde) | ||||
CH4O | Methanol (methyl alcohol) | CH3OH | [67-56-1] | Bal70 |
13CH3OH | ||||
CH318OH | ||||
CH2DOH | ||||
CH3OD | ||||
CHD2OH | ||||
CH4S | Methanethiol (methyl mercaptan) | CH3SH | [74-93-1] | Lin79 |
CH5N | Methanamine (methylamine) | CH3NH2 | [74-89-5] | Fou74a, Kai74 |
CMgN | Magnesium cyanide | MgCN a | [74758-76-2] | Ziu95 |
CMgN | Magnesium isocyanide | 24MgNC a | [96491-22-4] | Gue86, Gue93 |
25MgNC a | ||||
26MgNC a | ||||
CN | Cyanogen | CN | [2074-87-5] | Jef70, McK40 b |
13CN | ||||
C15N | ||||
CNNa | Sodium cyanide | NaCN a | [143-33-9] | Tur94 |
CNSi | Silicon cyanide | SiCN a | [29210-66-0] | Gué00 |
CNSi | Silicon isocyanide | SiNC a | [116430-49-0] | Gué04 |
CO | Carbon monoxide | CO | [630-08-0] | Wil70 |
13CO | ||||
C17O | ||||
C18O | ||||
13C18O | ||||
13C17O | ||||
CO+ | Carbon monoxide ion | CO+ | [12144-04-6] | Eri81, Lat93 |
COS | Carbon oxide sulfide (carbonyl sulfide) | OCS | [463-58-1] | Jef71 |
OC34S | ||||
O13CS | ||||
18OCS | ||||
CO2 | Carbon dioxide | CO2 | [124-38-9] | Jus96 |
CP | Carbon monophosphide | CP a | [12326-85-1] | Sai89, Gue90 |
CS | Carbon monosulfide | CS | [2944-05-0] | Lis75 |
C33S | ||||
C34S | ||||
C36S | ||||
13CS | ||||
13CS34S | ||||
CSi | Silicon monocarbide | SiC a | [409-21-2] | Cer89 |
C2H | Ethynyl | C2H | [2122-48-7] | Tuc78 |
13CCH | ||||
C13CH | ||||
C2D | ||||
C2HN | Cyanomethylene | HCCN | [2612-62-6] | Gue91 |
C2HNO | Cyanoformaldehyde | CNCHO | Rem08 | |
C2H2N | Cyanomethyl | CH2CN | [2932-82-3] | Irv88a |
C2H2O | Ethanone (ketene) | CH2CO | [463-51-4] | Tur77 |
C2H3N | Acetonitrile (methyl cyanide) | CH3CN | [75-05-8] | Sol71 |
13CH3CN | ||||
CH313CN | ||||
CH3C15N | ||||
CH2DCN | ||||
C2H3N | Isocyanomethane (methyl isocyanide) | CH3NC | [593-75-9] | Cer88 |
C2H3N | Keteneimine (ethenimine) | CH2CNH | [17619-22-6] | Lov06a |
C2H4O | Acetaldehyde (ethanal) | CH3CHO | [75-07-0] | Got73 |
C2H4O | Oxirane (ethylene oxide) | c-C2H4O c | [75-21-8] | Dic97 |
C2H4O | Ethenol (vinyl alcohol) | a-CH2CHOH | [557-75-5] | Tur01 |
s-CH2CHOH | ||||
C2H4O2 | Methyl ester formic acid (methyl formate) | CH3OCHO | [107-31-3] | Bro75 |
C2H4O2 | Acetic acid | CH3COOH | [64-19-7] | Meh97 |
C2H4O2 | Hydroxy acetaldehyde (glycolaldehyde) | CH2OHCHO | [141-46-8] | Hol00 |
C2H5NO | Acetamide | CH3CONH2 | [60-35-5] | Hol06a |
C2H6O | trans-Ethanol (ethyl alcohol) | t-CH3CH2OH | [64-17-5] | Zuc75 |
gauche-Ethanol | g-CH3CH2OH | Pea96 | ||
C2H6O | Dimethyl ether (oxybismethane) | CH3OCH3 | [115-10-6] | Sny74 |
C2H6O2 | Ethylene glycol | HOCH2CH2OH | [107-21-1] | Hol02 |
C2O | Oxoethenylidene | CCO | [119754-08-4] | Ohi91 |
C2P | Phosphaethenylidene | CCP | [154474-31-4] | Hal08 |
C2S | Thioxoethenylidene | CCS | [109545-32-6] | Yam90 |
CC34S | ||||
C2Si | Silicon carbide (silacyclopropyne) | SiC2 | [12071-27-1] | Tha84 |
29SiC2 | ||||
30SiC2 | ||||
Si13CC | ||||
C3 | Tricarbon | C3 | [175780-10-6] | Gie01 |
C3H | Cyclopropenylidyne | c-C3H b | [16165-40-5] | Yam87a |
c-CC13CH | ||||
C3H | Propenylidyne | l-C3H d | [53590-28-6] | Tha85 |
C3HN | 2-Propynenitrile (cyanoacetylene) | HCCCN | [1070-71-9] | Tur71 |
H13CCCN | ||||
HC13CCN | ||||
HCC13CN | ||||
HCCC15N | ||||
DCCCN | ||||
C3HN | Ethyne, isocyanide | HCCNC | [66723-45-3] | Kaw92 |
C3HN | 3-Imino-1,2-propadienylidene | HNCCC | [76092-41-6] | Kaw92a |
C3H2 | Cyclopropenylidene | c-C3H2c | [16165-40-5] | Mat85a |
c-H13CCCH | ||||
c-HC13CCH | ||||
c-C3HD | ||||
C3H2 | 1,2-Propadienylidene | H2CCC c | [60731-10-4] | Cer91 |
C3H2N+ | Protonated 2-propynenitrile | CCCNH+ | [76092-42-7] | Kaw94 |
C3H2O | 2-Propynal | HCCCHO | [624-67-9] | Irv88 |
C3H2O | Cyclopropenone | c-C2H2O | [2966080-0] | Hol06 |
C3H3N | 2-Propenenitrile (vinyl cyanide) | CH2CHCN | [107-13-1] | Gar75 |
13CH2CHCN | ||||
CH213CHCN | ||||
C3H4 | 1-Propyne (methyl acetylene) | CH3CCH | [74-99-7] | Sny71 |
CH3C13CH | ||||
13CH3CCH | ||||
CH2DCCH | ||||
CH3CCD | ||||
C3H4O | 2-Propenal (acrolein) | CH2CHCHO | [107-02-8] | Hol04 |
C3H5N | Propanenitrile (ethyl cyanide) | CH3CH2CN | [107-12-0] | Joh77 |
CH3CH213CN | ||||
CH313CH2CN | ||||
13CH3CH2CN | ||||
C3H6 | 1-Propene (propylene) | CH2CHCH3 | [115-07-1] | Mar07 |
C3H6O | 2-Propanone (acetone) | (CH3)2CO | [67-64-1] | Com87, Sny02 |
C3H6O | 2-Propanal | CH3CH2CHO | [123-38-6] | Hol04 |
C3N | Cyanoethynyl | CCCN | [62435-43-2] | Gue77 |
C3N- | Cyanoethynyl anion | CCCN- | [12373-53-4] | Tha08 |
C3O | 3-Oxo-1,2-propadienylidene | CCCO | [11127-17-6] | Mat84 |
C3S | 3-Thioxo-1,2-propadienylidene | CCCS | [109545-35-9] | Yam87 |
C3Si | 3-Silanetetrayl-1,2-propadienylidene (rhomboidal SiC3) | SiC3 | [184291-25-1] | App99 |
C4H | 1,3-Butadiynyl radical | C4H | [53561-65-2] | Gue77 |
13CCCCH | ||||
C13CCCH | ||||
CC13CCH | ||||
CCC13CH | ||||
C4D | ||||
C4H- | 1,3-Butadiynyl anion | C4H- | [59012-21-4] | Cer07 |
C4HN | 3-Cyano-1,2-propadienylidene | HCCCCN | [847643-26-9] | Bro84 |
C4H2 | Butatrienylidene | H2CCCC | [70571-89-0] | Bro84 |
C4H3N | 2-Butynenitrile | CH3CCCN | [13752-78-8] | Bro84 |
C4H3N | Cyanoallene (2,3-butadienenitrile) | CH2CCHCN | [1001-56-5] | Lov06 |
C4Si | Silicon tetracarbide | SiC4a | [144920-67-2] | Ohi89 |
SiCCC13C | ||||
C5H | 2,4-Pentadiynylidyne | HCCCCC | [104602-63-3] | Cer86 |
C5HN | 2,4-Pentadiynenitrile (cyanobutadiyne) | HCCCCCN | [59866-32-9] | Ave76 |
H13CCCCCN | ||||
HC13CCCCN | ||||
HCC13CCCN | ||||
HCCC13CCN | ||||
HCCCC13CN | ||||
DCCCCCN | ||||
C5H4 | 1,3-Pentadiyne (methyl diacetylene) | CH3C4H | [4911-55-1] | Wal84 |
C5N | 4-cyano-1,3-Butadiynylium | C5N | [129066-48-4] | Gue98 |
C6H | 1,3,5-hexatriynyl | HCCCCCC | [88053-50-3] | Suz86 |
C6H- | 1,3,5-hexatriynyl anion | H-CCCCCC | [169141-81-1] | McC06 |
C6H2 | 1,3,5-Hexatriyne | HCCCCCCH a | [3161-99-7] | Cer01a |
C6H2 | 1,2,3,4,5-hexapentaenylidene | H2CCCCCC | [129066-05-3] | Lan97 |
C6H3N | 2,4-Hexadiynenitrile | CH3C4CN | [66486-69-9] | Sny06 |
C7H | 2,4,6-Heptatriynylidyne | HCCCCCCC a | [129066-03-1] | Gue97 |
C7HN | 2,4,6-heptatriynenitrile | HC7N | [65937-22-6] | Kro78 |
C7H4 | Methyltriacetylene | CH3C6H | [66486-68-8] | Rem06 |
C8H | 1,3,5,7-Octatetraynyl | HC8a | [88053-51-4] | Cer96 |
C8H- | 1,3,5,7-Octatetraynyl anion | HC8- | [149673-52-9] | Brü07 |
C9HN | 2,4,6,8-nonatetraynenitrile | HC9N | [67483-72-1] | Bro78 |
C11HN | 2,4,6,8,10-undecapentaynenitrile | HC11N | [78950-25-1] | Bel97 |
ClH | Hydrochloric acid | H35Cl | [7647-01-0] | Sch95 |
H37Cl | ||||
ClK | Potassium chloride | K35Cl a | [7447-40-7] | Cer87c |
K37Cl | ||||
ClNa | Sodium chloride | Na35Cl a | [7647-14-5] | Cer87c |
Na37Cl a | ||||
FH | Hydrogen fluoride | HF | [7664-39-3] | Neu97 |
FeO | Iron monoxide | FeO | [1345-25-1] | Wal02 |
HLi | Lithium Hydride | 7LiH | [7580-67-8] | Com98 |
HNO | Nitrosyl hydride | HNO | [14332-28-6] | Uil77, Sny93 |
HN2+ | Hydrodinitrogen(1+) (diazenylium) | N2H+ | [12357-66-3] | Tur74, Gre74 |
15NNH+ | ||||
N15NH+ | ||||
N2D+ | ||||
HO | Hydroxyl | OH | [3352-57-6] | Wei63 |
17OH | ||||
18OH | ||||
HS | Mercapto (thiohydroxyl) | SH | [13940-21-1] | Yam00 |
H2N | Amidogen | NH2 | [13770-40-6] | vDi93 |
H2O | Water | H2O | [7732-18-5] | Che69 |
H218O | ||||
HDO | ||||
D2O | ||||
H2S | Hydrogen sulfide | H2S | [7783-06-4] | Tha72 |
H234S | ||||
HDS | ||||
H3+ | Hydrogen ion | H2D+ | [28132-48-1] | Sta99 |
HD2+ | ||||
H3N | Ammonia | NH3 | [7664-41-7] | Che68 |
15NH3 | ||||
NH2D | ||||
NHD2 | ||||
ND3 | ||||
H3O+ | Oxonium hydride | H3O+ | [28637-38-9] | Hol86 |
H4Si | Silane | SiH4a | [7803-62-5] | Kea93 |
NO | Nitrogen oxide (nitric oxide) | NO | [10102-43-9] | Lis78a |
NP | Phosphorous nitride | PN | [17739-47-8] | Tur87b |
NS | Nitrogen sulfide (nitric sulfide) | NS | [12033-56-6] | Got75 |
N34S | ||||
NSi | Silicon mononitride | SiN a | [12033-60-2] | Tur92 |
N2O | Nitrogen oxide (nitrous oxide) | N2O | [10024-97-2] | Ziu94 |
OP | Phosphorous oxide | PO | [14452-66-5] | Ten07 |
OS | Sulfur monoxide | SO | [13827-32-2] | Got73b |
33SO | ||||
34SO | ||||
S18O | ||||
OS+ | Sulfur(1+), oxo | SO+ | [54724-05-9] | Tur92a |
OSi | Silicon monoxide | SiO | [113443-18-8] | Wil71 |
29SiO | ||||
30SiO | ||||
O2 | Oxygen | O2 | [7782-44-7] | Lar07 |
O2S | Sulfur dioxide | SO2 | [7446-09-5] | Sny75a |
33SO2 | ||||
34SO2 | ||||
OS18O | ||||
OS17O | ||||
SSi | Silicon monosulfide | SiS | [25423-24-9] | Mor75 |
Si33S | ||||
Si34S | ||||
29SiS | ||||
30SiS |
a Reported only in circumstellar clouds.
b Identification of the optical lines in McK40 were confirmed by W.S. Adams [Ada41].
c The c refers to cyclic form.
d The l refers to linear form.