Molecular formula
C18H18O2
292 compounds have this formula on CompoundList.
- Molar mass
- 266.34g/mol
- Monoisotopic mass
- 272.1683Da
- Atoms
- 38
- Elements
- 3
- Rings plus double bonds
- 10
The formula C18H18O2 describes a molecule made of 18 carbon atoms, 18 hydrogen atoms and 2 oxygen atoms. 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 × 1881.17%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 186.81%1.008 × 18 = 18.144 g/mol
- O Oxygen × 212.01%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C18H18O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 201 to 292 of 292 compounds
2-(5,7-Dimethyl-1-benzofuran-3-yl)-4,6-dimethylphenol
CAS 61551-54-0C18H18O2
2-(4,6-Dimethyl-1-benzofuran-3-yl)-3,5-dimethylphenol
CAS 61551-56-2C18H18O2
Ethyl 3-(4-methylphenyl)-3-phenylprop-2-enoate
CAS 126838-29-7C18H18O2
7-(3-Cyclopentylprop-1-yn-1-yl)-2H-chromene-3-carbaldehyde
CAS 1228582-43-1C18H18O2
1-(Diphenylmethyl)cyclobutane-1-carboxylic acid
CAS 1028833-87-5C18H18O2
![[1,1'-Biphenyl]-4-yl(tetrahydro-2H-pyran-4-yl)methanone chemical structure, C18H18O2, CAS 1405702-47-7](/s/KOYBKVGXVUNTFG-UHFFFAOYSA-N.svg)
[1,1'-Biphenyl]-4-yl(tetrahydro-2H-pyran-4-yl)methanone
CAS 1405702-47-7C18H18O2
6-(1-Phenylethoxy)-3,4-dihydronaphthalen-1(2H)-one
CAS 1431384-45-0C18H18O2
![1-(6,7,8,9-Tetramethyldibenzo[b,d]furan-3-yl)ethan-1-one chemical structure, C18H18O2, CAS 91786-88-8](/s/AQKDPXNIVTZZTF-UHFFFAOYSA-N.svg)
1-(6,7,8,9-Tetramethyldibenzo[b,d]furan-3-yl)ethan-1-one
CAS 91786-88-8C18H18O2
tert-Butyl 9H-fluorene-4-carboxylate
CAS 95303-01-8C18H18O2
![1-(4-Methylphenyl)-2-[(3-phenylprop-2-en-1-yl)oxy]ethan-1-one chemical structure, C18H18O2, CAS 603132-14-5](/s/GRUZLEHXMYQARS-UHFFFAOYSA-N.svg)
1-(4-Methylphenyl)-2-[(3-phenylprop-2-en-1-yl)oxy]ethan-1-one
CAS 603132-14-5C18H18O2
2,2-Dimethyl-1-(4-phenylphenyl)cyclopropane-1-carboxylic acid
CAS 1537407-69-4C18H18O2
7-(Benzyloxy)-3-methyl-3,4-dihydronaphthalen-1(2H)-one
CAS 666177-36-2C18H18O2
5-(Benzyloxy)-1,2,3,4-tetrahydronaphthalene-1-carbaldehyde
CAS 848086-70-4C18H18O2
1-(3-(Benzyloxy)phenyl)-3-methylbut-2-en-1-one
CAS 1253905-61-1C18H18O2
3,3-Diphenylpropyl acrylate
CAS 1246752-04-4C18H18O2
methanone chemical structure, C18H18O2, CAS 1878939-92-4](/s/JTUSMSVCTOJSNR-UHFFFAOYSA-N.svg)
[4-(Benzyloxy)phenyl](cyclobutyl)methanone
CAS 1878939-92-4C18H18O2
2-(Benzyloxy)-4-ethynyl-1-isopropoxybenzene
CAS 2801182-15-8C18H18O2
1-(2-(Benzyloxy)phenyl)-2-cyclopropylethan-1-one
CAS 1871181-30-4C18H18O2
![4-[(1E,3E)-4-(4-Hydroxy-3-methylphenyl)buta-1,3-dien-1-yl]-2-methylphenol chemical structure, C18H18O2, CAS 146123-25-3](/s/OFSGMPQEBXAJCI-GGWOSOGESA-N.svg)
4-[(1E,3E)-4-(4-Hydroxy-3-methylphenyl)buta-1,3-dien-1-yl]-2-methylphenol
CAS 146123-25-3C18H18O2
2-(Benzyloxy)-1-ethynyl-3-propoxybenzene
CAS 2808386-00-5C18H18O2
1-(Benzyloxy)-2-(pent-4-yn-1-yloxy)benzene
CAS 2989371-83-5C18H18O2
![(3E)-5-[4-(Benzyloxy)phenyl]pent-3-en-2-one chemical structure, C18H18O2, CAS 75676-92-5](/s/JIQQQBXUBMOKMD-AATRIKPKSA-N.svg)
(3E)-5-[4-(Benzyloxy)phenyl]pent-3-en-2-one
CAS 75676-92-5C18H18O2
1,1'-(Buta-1,3-diene-1,4-diyl)bis(2-methoxybenzene)
CAS 38641-96-2C18H18O2
Methyl (1R,3S)-3-methyl-2,2-diphenylcyclopropanecarboxylate
CAS 197018-30-7C18H18O2
- 2-Methyl-2-(1-naphthalenylmethyl)-1,3-cyclohexanedione1090-66-0C18H18O2
- 3-{[1,1'-Biphenyl]-4-yl}-2,2-dimethylcyclopropane-1-carboxylic acid95020-75-0C18H18O2
- rac-(1R,3R)-3-{[1,1'-Biphenyl]-2-yl}-2,2-dimethylcyclopropane-1-carboxylic acid2227750-56-1C18H18O2
- 1-{[1,1'-Biphenyl]-2-yl}-2,2-dimethylcyclopropane-1-carboxylic acid2228746-02-7C18H18O2
- 2-(1-{[1,1'-Biphenyl]-2-yl}cyclobutyl)acetic acid2228364-52-9C18H18O2
- 6-(3-Ethoxyphenyl)-3,4-dihydronaphthalen-1(2H)-one3078388-75-4C18H18O2
- (2-(Benzyloxy)-3-methylphenyl)(cyclopropyl)methanone3002519-17-4C18H18O2
- (3S,4S,6S)-6-Methyl-3,4-diphenyloxan-2-one80575-30-0C18H18O2
- 3,5-Dimethylphenyl 3-(4-methylphenyl)prop-2-enoate6986-78-3C18H18O2
- (3,5-Dimethylphenyl)3-(4-methylphenyl)prop-2-enoate649717-50-0C18H18O2
- (3R,4R)-11-Methyl-4,15,16,17-tetrahydro-3H-cyclopenta[a]phenanthrene-3,4-diol145627-69-6C18H18O2
- 1-(4-Benzoylphenyl)-2,2-dimethyl-1-propanone684271-15-6C18H18O2
- [4-Hydroxy-3-(3-methylbut-2-en-1-yl)phenyl](phenyl)methanone63565-02-6C18H18O2
- 2-Ethyl-1-(4-methylphenyl)-3-phenylpropane-1,3-dione82145-68-4C18H18O2
- 2-(4,6-Dimethyl-2H-1-benzopyran-3-yl)-4-methylphenol88072-75-7C18H18O2
- 1-Methyl-3,4-diphenylcyclopent-3-ene-1,2-diol88964-82-3C18H18O2
- 3-Cyclopropyl-2,2-diphenyloxetan-3-ol89867-85-6C18H18O2
- 1-Cyclopropyl-3-hydroxy-2,2-diphenylpropan-1-one89867-90-3C18H18O2
- 2-Phenyl-2-{[2-(prop-2-en-1-yl)phenoxy]methyl}oxirane90354-38-4C18H18O2
- 2-(Diphenylmethylidene)-4,4-dimethyl-1,3-dioxolane109911-29-7C18H18O2
- Ethyl (3,4-dihydrophenanthren-1-yl)acetate112467-96-6C18H18O2
- 3,6-Dihydro-4-[3-(phenylmethoxy)phenyl]-2H-pyran133739-91-0C18H18O2
- 2-Benzyloxy-6,7,8,9-tetrahydrobenzo[7]annulen-5-one35872-54-9C18H18O2
- Cyclopentyl(4-phenoxyphenyl)methanone1096909-46-4C18H18O2
- 6,7-Di(cyclohexa-1,3-dien-1-yl)-1,4-dioxocine63163-66-6C18H18O2
- 2-Phenylpropan-2-yl 4-vinylbenzoate91263-32-0C18H18O2
- Methyl 1,2,3,6,7,8-hexahydropyrene-4-carboxylate88535-50-6C18H18O2
- 6-[(2,3-Dihydro-1H-inden-5-yl)oxy]-2,3-dihydro-1H-inden-5-ol89004-25-1C18H18O2
- 3-Methoxy-1,5-diphenylpent-4-en-1-one94123-65-6C18H18O2
- 3,4-Diethylphenanthrene-1,2-diol96339-95-6C18H18O2
- Ethyl (3,4-dihydrophenanthren-1(2H)-ylidene)acetate112467-95-5C18H18O2
- 1-tert-Butylanthracene-9,10-diol178922-91-3C18H18O2
- 1-(But-3-en-1-yl)-1,4,4a,9a-tetrahydroanthracene-9,10-dione52651-56-6C18H18O2
- 1,1'-[Ethane-1,2-diylbis(oxy)]di(cycloocta-1,3,5,7-tetraene)510706-00-0C18H18O2
- Methyl 2-(dec-3-ene-1,5-diyn-1-yl)benzoate502898-05-7C18H18O2
- 5,5a,6,11,11a,12-Hexahydrotetracene-2,9-diol64302-82-5C18H18O2
- 3,14-Dimethylhexadeca-3,5,11,13-tetraene-1,8,15-triyne-7,10-diol62309-05-1C18H18O2
- 1-(4-Methylphenyl)-2-(2,4,6-trimethylphenyl)ethane-1,2-dione61136-79-6C18H18O2
- cis-(3S,5R)-3-(4-Hydroxyphenyl)-5-phenylcyclohexan-1-one88362-82-7C18H18O2
- 4-(Hydroxymethyl)-1,5-diphenylpent-1-en-3-one921625-35-6C18H18O2
- 2-[Hydroxy(phenyl)methyl]-1-phenylpent-1-en-3-one918138-99-5C18H18O2
- 2-{[(9-Ethyl-9H-fluoren-9-yl)oxy]methyl}oxirane571970-50-8C18H18O2
- 1-(2-Phenylphenyl)cyclopentane-1-carboxylic acid1891904-01-0C18H18O2
- [3-(Benzyloxy)phenyl](cyclobutyl)methanone1875383-85-9C18H18O2
- 2-Benzhydryldihydro-2H-pyran-4(3H)-one1961425-54-6C18H18O2
- (1,2-Dihydro-5-acenaphthylenyl)(tetrahydro-2H-pyran-4-yl)methanone1774288-87-7C18H18O2
- 5-(Benzyloxy)-4-isopropylbicyclo[4.2.0]octa-1,3,5-trien-7-one1637440-00-6C18H18O2
- 2-(3-(Benzyloxy)phenyl)-2-cyclopropylacetaldehyde2358238-54-5C18H18O2
- 3'-(Cyclopentyloxy)-[1,1'-biphenyl]-3-carbaldehyde2990837-83-5C18H18O2
- Methyl (2E)-3-(2,5-dimethylphenyl)-3-phenylprop-2-enoate2172635-52-6C18H18O2
- 5-(Benzyloxy)-2-(2-methylbut-3-yn-2-yl)phenol2228522-63-0C18H18O2
- 2-[1-(4-Phenylphenyl)cyclobutyl]acetic acid2228503-39-5C18H18O2
- rac-(1R,3R)-2,2-Dimethyl-3-(4-phenylphenyl)cyclopropane-1-carboxylic acid842121-30-6C18H18O2
- 2,2-Dimethyl-3-(2-phenylphenyl)cyclopropane-1-carboxylic acid2228617-47-6C18H18O2
- 4-(Benzyloxy)-2-ethynyl-1-isopropoxybenzene3078380-59-0C18H18O2
- 5-(2-Ethoxyphenyl)-3,4-dihydronaphthalen-1(2H)-one3078382-06-3C18H18O2
- 2-(Benzyloxy)-5-cyclopropyl-3-methylbenzaldehyde3078447-76-1C18H18O2
- Cyclobutyl[2-(phenylmethoxy)phenyl]methanone1871372-87-0C18H18O2
- (3-(Benzyloxy)-5-methylphenyl)(cyclopropyl)methanone3031805-88-3C18H18O2
- Ethyl (E)-3-(4-methylphenyl)-3-phenylprop-2-enoateC18H18O2
- 1,2,3,6,7,8-Hexahydro-1-pyreneacetic Acid137233-88-6C18H18O2
- 1,4-Bis(2-methoxyphenyl)buta-1,3-dieneC18H18O2
- 1-Benzoxonin-9-ol, 2,5,6,7-tetrahydro-4-phenyl-, (3E)-1415611-99-2C18H18O2
- 1-Benzoxonin-9-ol, 2,3,6,7-tetrahydro-4-phenyl-, (4E)-1415611-97-0C18H18O2
- 3-(2-Phenylethyl)-3,4-dihydro-2H-chromene-6-carbaldehyde1106951-72-7C18H18O2
- Honokiol-13C61441417-34-0C18H18O2
- (2R)-4-(4-Methylphenyl)-1-phenylmethoxybut-3-yn-2-ol126225-13-6C18H18O2
- (4S,6R)-4,6-Dimethylspiro[1,3-dioxane-2,9'-fluorene]137767-54-5C18H18O2
Frequently asked questions
What is the molar mass of C18H18O2?
The molar mass of C18H18O2 is 266.34 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms and 2 oxygen atoms. The monoisotopic mass is 272.1683 Da.
How many compounds have the formula C18H18O2?
CompoundList lists 292 compounds with the molecular formula C18H18O2, including 2-(5,7-Dimethyl-1-benzofuran-3-yl)-4,6-dimethylphenol, 2-(4,6-Dimethyl-1-benzofuran-3-yl)-3,5-dimethylphenol, Ethyl 3-(4-methylphenyl)-3-phenylprop-2-enoate. 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 C18H18O2?
C18H18O2 has a degree of unsaturation of 10. 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.