C18H28O
45 compounds have this formula on CompoundList.
- Molar mass
- 260.42g/mol
- Monoisotopic mass
- 262.2266Da
- Atoms
- 47
- Elements
- 3
- Rings plus double bonds
- 5
The formula C18H28O describes a molecule made of 18 carbon atoms, 28 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 × 1883.02%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 2810.84%1.008 × 28 = 28.224 g/mol
- O Oxygen × 16.14%15.999 × 1 = 15.999 g/mol
Compounds with the formula C18H28O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 45 of 45 compounds
![(8R,9S,10R,13S,14S,17S)-13-Methyl-1,2,3,6,7,8,9,10,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-ol chemical structure, C18H28O, CAS 3646-30-8](/s/CAFOMEFFALHXPZ-IZPLOLCNSA-N.svg)
![[4-(4-Pentylcyclohexyl)phenyl]methanol chemical structure, C18H28O, CAS 82380-25-4](/s/DZUHFSSAWKOKHE-UHFFFAOYSA-N.svg)
![Benzene, [(10-undecenyloxy)methyl]- chemical structure, C18H28O, CAS 81518-75-4](/s/LMWYHLXLBPELFF-UHFFFAOYSA-N.svg)
![1-Cyclohexyl-2-tricyclo[3.3.1.13,7]dec-1-ylethanone chemical structure, C18H28O, CAS 76308-70-8](/s/UQWJLXJHCNQEBA-UHFFFAOYSA-N.svg)
- (4aS,8aR,10aR)-1,1,4a,8a-TetraMethyl-1,4,4a,6,7,8,8a,9,10,10a-decahydrophenanthren-2(3H)-one670246-59-0C18H28O
- 1-(3-(tert-Butyl)phenyl)-4,4-dimethylcyclohexanol2918917-56-1C18H28O
- alpha-Cyclopropyl-3,5-bis(1,1-dimethylethyl)benZenemethanol2801693-51-4C18H28O
- 3,4-Heptadien-2-one, 3,5-dicyclopentyl-6-methyl-63922-51-0C18H28O
- {[(2-Methylidenedecyl)oxy]methyl}benzene256657-25-7C18H28O
- Farnesylideneacetone64762-20-5C18H28O
- (8R,9R,10S,13S,14S)-Hexadecahydrospiro[cyclopenta[a]phenanthrene-17,2'-oxirane]66173-06-6C18H28O
- 2,6-Di-tert-butyl-4-methyl-4-(prop-2-en-1-yl)cyclohexa-2,5-dien-1-one2756-79-8C18H28O
- 2,5-Cyclohexadien-1-one, 2,6-bis(1,1-dimethylethyl)-4-methyl-4-(2-propenyl-3,3-d2)-29777-56-8C18H28O
- 4-(4-Octylphenyl)butanal183129-88-6C18H28O
- 2,3-Dibutyl-2,3,3a,4,7,7a-hexahydro-1H-4,7-methanoinden-1-one500784-64-5C18H28O
- (3R)-2,2,3-Trimethyl-1-phenylnonan-1-one87640-37-7C18H28O
- 1,1,4a,8a-Tetramethyl-3,4,6,7,8,9,10,10a-octahydrophenanthren-2-oneC18H28O
- 3-(2-Methylprop-2-EN-1-yl)-2-octylphenol138392-62-8C18H28O
- 1-Ethyl-4-[4-(3-methoxypropyl)cyclohexyl]benzene143098-09-3C18H28O
- 2,6-Di-tert-butyl-4-butylidenecyclohexa-2,5-dien-1-one62130-85-2C18H28O
- (3-Methoxyundec-1-EN-1-yl)benzene917836-72-7C18H28O
- {[(Undec-1-en-3-yl)oxy]methyl}benzene917836-69-2C18H28O
- (3S,3aR,8aR)-1,2,3,3a,6,7,8,8a-Octahydro-8a-methyl-3-(1-methylethyl)-8-(1-methylethylidene)-5-azulenecarboxaldehyde288401-49-0C18H28O
- 4-Methoxy-2-methyl-1-(3,3,5,5-tetramethylcyclohexyl)benzene1058160-27-2C18H28O
- (4aS,8aR)-1,1,4a,8a-Tetramethyl-3,4,6,7,8,9,10,10a-octahydrophenanthren-2-oneC18H28O
Frequently asked questions
What is the molar mass of C18H28O?
The molar mass of C18H28O is 260.42 g/mol, calculated from standard atomic weights for 18 carbon atoms, 28 hydrogen atoms and 1 oxygen atom. The monoisotopic mass is 262.2266 Da.
How many compounds have the formula C18H28O?
CompoundList lists 45 compounds with the molecular formula C18H28O, including 1-Phenyl-1-dodecanone, 6-Ethyl-7-methoxymethyl-1,2,3,4-tetrahydro-1,1,4,4-tetramethylnaphthalene, 15,16-Dinor-8(17),11-labdadien-13-one. 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 C18H28O?
C18H28O has a degree of unsaturation of 5. 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.