Molecular formula
C11H18O
667 compounds have this formula on CompoundList.
- Molar mass
- 166.26g/mol
- Monoisotopic mass
- 166.1358Da
- Atoms
- 30
- Elements
- 3
- Rings plus double bonds
- 3
The formula C11H18O describes a molecule made of 11 carbon atoms, 18 hydrogen atoms and 1 oxygen atom. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 1179.46%12.011 × 11 = 132.121 g/mol
- H Hydrogen × 1810.91%1.008 × 18 = 18.144 g/mol
- O Oxygen × 19.62%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C11H18O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 201 to 300 of 667 compounds
![1-Oxaspiro[5.5]undecane, 4-methylene- chemical structure, C11H18O, CAS 62062-84-4](/s/VHKRNRCRNSQLTA-UHFFFAOYSA-N.svg)
1-Oxaspiro[5.5]undecane, 4-methylene-
CAS 62062-84-4C11H18O
rel-(4aR,8aS)-Octahydro-8a-methyl-1(2H)-naphthalenone
CAS 937-77-9C11H18O
Oxirane, 2-(1-heptynyl)-2,3-dimethyl-, (2R,3R)-
CAS 647862-68-8C11H18O
2H-Pyran, 2-cyclohexyl-5,6-dihydro-
CAS 158070-12-3C11H18O
2-Butyl-3-methylcyclohex-2-en-1-one
CAS 13679-29-3C11H18O
(3E,5Z)-3,5-Undecadien-2-one
CAS 113388-24-2C11H18O
1-(2,3-Dipropylcycloprop-2-en-1-yl)ethan-1-one
CAS 15143-70-1C11H18O
2,4-Dimethyl-3-pentylfuran
CAS 77547-20-7C11H18O
2,8-Dimethylnona-2,7-dien-4-one
CAS 2520-61-8C11H18O
2,4,4-Trimethyl-2-(prop-2-en-1-yl)cyclopentan-1-one
CAS 118075-31-3C11H18O
![Ethanone, 1-[2-methyl-5-(1-methylethylidene)cyclopentyl]-, (1R-trans)- chemical structure, C11H18O, CAS 127798-42-9](/s/SYOCDJIHPBNMRB-KWQFWETISA-N.svg)
Ethanone, 1-[2-methyl-5-(1-methylethylidene)cyclopentyl]-, (1R-trans)-
CAS 127798-42-9C11H18O
1-(Oct-1-yn-1-yl)cyclopropan-1-ol
CAS 140840-81-9C11H18O
2,2,3,6-Tetramethylcyclohex-3-ene-1-carbaldehyde
CAS 102878-62-6C11H18O
1-(1,4,6-Trimethylcyclohex-3-en-1-yl)ethan-1-one
CAS 106265-48-9C11H18O
1-(2,4,4-Trimethylcyclohex-2-en-1-yl)ethan-1-one
CAS 68826-42-6C11H18O
1-(4,6,6-Trimethylcyclohex-3-en-1-yl)ethan-1-one
CAS 55695-34-6C11H18O
4-Cyclohexyl-2-methylbut-3-yn-2-ol
CAS 20411-75-0C11H18O
1,2-Dimethyl-5-(prop-1-en-2-yl)cyclopentane-1-carbaldehyde
CAS 94454-55-4C11H18O
2,4,6-Trimethyl-2,6-octadienal
CAS 35906-83-3C11H18O
2-(But-2-yn-1-yl)cycloheptan-1-ol
CAS 1457716-55-0C11H18O
2-(But-3-yn-1-yl)cycloheptan-1-ol
CAS 1341929-22-3C11H18O
2,2-Dimethyl-6-(prop-2-en-1-yl)cyclohexan-1-one
CAS 89328-75-6C11H18O
3-Methyl-5-isobutyl-2-cyclohexenone
CAS 104116-12-3C11H18O
4a-Methyl-2,3,4,4a,5,6,7,8-octahydronaphthalen-2-ol
CAS 26675-10-5C11H18O
- 6-tert-Butylcyclohept-2-en-1-one71837-40-6C11H18O
- 5-tert-Butylcyclohept-2-en-1-one71837-43-9C11H18O
- 3-Methyl-6-(prop-1-EN-2-yl)cycloheptan-1-one71837-50-8C11H18O
- 2,2,5,5-Tetramethyl-3-methylenecyclohexanone35505-97-6C11H18O
- 6-Isopropyl-3-methyl-2-methylenecyclohexanone91280-38-5C11H18O
- 5,5,7-Trimethyl-3,7-octadien-2-one94021-45-1C11H18O
- 3-Ethyl-2-propan-2-ylcyclohex-2-en-1-one164266-57-3C11H18O
- 2-Naphthalenol, 2,3,4,4a,5,6,7,8-octahydro-4a-methyl-, cis-31654-83-8C11H18O
- 3-Butyl-2-methylcyclohex-2-en-1-one56745-19-8C11H18O
- 1-Oxaspiro(5.6)dodec-3-ene219903-89-6C11H18O
- 2-(3-Methylbut-2-en-1-yl)cyclohexan-1-one704-99-4C11H18O
- Undec-9-yn-5-one79681-48-4C11H18O
- Undec-4-yn-2-one135645-94-2C11H18O
- 2-(Pent-4-yn-1-yl)cyclohexan-1-ol88854-26-6C11H18O
- 1-Cyclohexyl-3-methylbut-2-en-1-one14618-93-0C11H18O
- 2-Cyclohexen-1-one, 2,3-dimethyl-5-(1-methylethyl)-, (5S)-1072085-43-8C11H18O
- 3-Cyclopentylcyclohexan-1-one27608-11-3C11H18O
- 5-Methylcyclodec-5-en-1-one84292-10-4C11H18O
- 8-[(Prop-2-en-1-yl)oxy]octa-1,6-diene25016-95-9C11H18O
- 1-(3-Methylbut-1-en-2-yl)cyclopentane-1-carbaldehyde2228-95-7C11H18O
- 3-Methylidene-4-(pent-4-en-1-yl)tetrahydro-2H-pyran1287250-17-2C11H18O
- 4-Methylidene-3-(pent-4-en-1-yl)tetrahydro-2H-pyran1287250-42-3C11H18O
- Decahydro-1,4-methanonaphthalen-2-ol155820-90-9C11H18O
- 4-{Bicyclo[2.2.1]heptan-2-yl}butan-2-one33624-09-8C11H18O
- 4-Ethyl-2-(2-methylprop-1-en-1-yl)-3,6-dihydro-2H-pyran143913-60-4C11H18O
- 1-(Pent-3-yn-1-yl)cyclohexan-1-ol184906-57-8C11H18O
- 3-Ethynyl-2-methyloct-1-en-3-ol62055-66-7C11H18O
- 4,7-Dimethyl-3,4,4a,5,6,8a-hexahydro-2H-1-benzopyran62048-17-3C11H18O
- 2-Methylidenedec-9-enal832688-86-5C11H18O
- (2,2,6-Trimethylcyclohexylidene)acetaldehyde4544-31-4C11H18O
- 1-{Bicyclo[2.2.1]heptan-2-yl}but-3-en-2-ol1603534-19-5C11H18O
- 4-{Bicyclo[2.2.1]heptan-2-yl}butanal1559987-14-2C11H18O
- 1-Cyclopentylcyclopentane-1-carbaldehyde1506839-23-1C11H18O
- 2-(1,1-Dimethylethyl)-4-(1-methylethylidene)cyclobutanone4579-32-2C11H18O
- 1-Cyclohexylcyclobutane-1-carbaldehyde1935343-27-3C11H18O
- (1R,2S)-2-(3,3-Dimethylbut-1-yn-1-yl)cyclopentan-1-ol2166180-84-1C11H18O
- 1-(Prop-2-en-1-yl)cycloheptane-1-carbaldehyde1114060-64-8C11H18O
- 1,3,3,7-Tetramethyl-2-oxobicyclo(2.2.1)heptane15404-57-6C11H18O
- Dimethylvinylethynylmethanol butyl ether819-41-0C11H18O
- 2H-Inden-2-one, 1-ethyloctahydro-74895-96-8C11H18O
- 1H-Inden-1-one, 7a-ethyloctahydro-74895-97-9C11H18O
- 2-(3-Pentoxy)-1,3-cyclohexadiene98677-92-0C11H18O
- 1-(3-Pentoxy)-1,4-cyclohexadiene98677-93-1C11H18O
- trans-8-Methoxy-1,2,3,4,4a,5,6,8a-octahydronaphthalene101555-40-2C11H18O
- Pinaverium impurity 38149253-41-8C11H18O
- 4-Undecyn-3-one81113-02-2C11H18O
- 2,7-Nonadien-5-one, 4,6-dimethyl-74630-80-1C11H18O
- 2-Undecyn-4-one170935-10-1C11H18O
- Cyclohexanone, 2-(1-ethylpropylidene)-144054-69-3C11H18O
- (6R)-6-Butylcyclohept-2-en-1-one232267-85-5C11H18O
- (2Z)-Cycloundec-2-en-1-one24593-67-7C11H18O
- (4aS,8aR)-4a-Methyl-1,3,4,5,6,7,8,8a-octahydronaphthalen-2-one938-06-7C11H18O
- Bicyclo[4.1.0]heptan-1-ol, 5-(3-butenyl)-147950-48-9C11H18O
- 4-Methyldec-5-ynal823785-33-7C11H18O
- 2-Cyclohexen-1-one, 2,3-dimethyl-5-propyl-765906-81-8C11H18O
- 2-Cyclohexene-1-acetaldehyde, 1,5,5-trimethyl-127826-98-6C11H18O
- 3-Allyl-4,4-dimethylcyclohexanone118088-35-0C11H18O
- (2E,4E)-Undeca-2,4-dien-6-one439812-15-4C11H18O
- 2H-Pyran, 3-cyclohexyl-5,6-dihydro-61639-07-4C11H18O
- 6-Pentylcyclohex-2-EN-1-one63606-79-1C11H18O
- (6E)-4,4-Dimethyl-6,8-nonadien-2-one72952-74-0C11H18O
- 1-Cyclooctylidene-2-propanone55981-44-7C11H18O
- 3,4-Dimethyl-2-pentylfuran71041-47-9C11H18O
- 1-(Bicyclo[3.2.2]nonan-1-yl)ethan-1-one80606-51-5C11H18O
- 5-Butyl-2-methylcyclohex-2-en-1-one84065-66-7C11H18O
- Cyclohexanone, 6-methyl-2-methylene-3-(1-methylethyl)-, (3R-cis)-82467-61-6C11H18O
- 4-Methyl-5-pentylcyclopent-2-EN-1-one70396-81-5C11H18O
- 2,2,4,6,6-Pentamethylcyclohex-3-en-1-one87129-01-9C11H18O
- 5-Undecen-2-yn-1-ol, (5E)-1400645-61-5C11H18O
- 5,5-Dimethyl-2-(prop-1-en-2-yl)cyclohexan-1-one832721-63-8C11H18O
- 5-tert-Butyl-3-methylcyclohex-2-en-1-one112621-64-4C11H18O
- 1,3,3-Trimethylbicyclo[2.2.2]octan-2-one144340-75-0C11H18O
- 2-{Bicyclo[2.2.1]hept-5-en-2-yl}-2-methylpropan-1-ol2228915-59-9C11H18O
- 1-(2,2,6-Trimethylcyclohex-3-en-1-yl)ethanone562091-76-3C11H18O
- Octahydro-1H-4,7-ethanoinden-5-ol63730-67-6C11H18O
- 2-Methyl-5-(propan-2-ylidene)cyclohexane-1-carbaldehyde138117-26-7C11H18O
Frequently asked questions
What is the molar mass of C11H18O?
The molar mass of C11H18O is 166.26 g/mol, calculated from standard atomic weights for 11 carbon atoms, 18 hydrogen atoms and 1 oxygen atom. The monoisotopic mass is 166.1358 Da.
How many compounds have the formula C11H18O?
CompoundList lists 667 compounds with the molecular formula C11H18O, including 1-Oxaspiro[5.5]undecane, 4-methylene-, rel-(4aR,8aS)-Octahydro-8a-methyl-1(2H)-naphthalenone, Oxirane, 2-(1-heptynyl)-2,3-dimethyl-, (2R,3R)-. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C11H18O?
C11H18O has a degree of unsaturation of 3. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.