Molecular formula
C18H20O2
331 compounds have this formula on CompoundList.
- Molar mass
- 268.36g/mol
- Monoisotopic mass
- 276.1965Da
- Atoms
- 40
- Elements
- 3
- Rings plus double bonds
- 9
The formula C18H20O2 describes a molecule made of 18 carbon atoms, 20 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 × 1880.56%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 207.51%1.008 × 20 = 20.160 g/mol
- O Oxygen × 211.92%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C18H20O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 331 compounds
3',4'-Dimethyl-3-(3-methoxyphenyl)propiophenone
CAS 898774-82-8C18H20O2
2',3'-Dimethyl-3-(4-methoxyphenyl)propiophenone
CAS 898775-80-9C18H20O2
2',4'-Dimethyl-3-(4-methoxyphenyl)propiophenone
CAS 898775-82-1C18H20O2
3',4'-Dimethyl-3-(4-methoxyphenyl)propiophenone
CAS 898775-88-7C18H20O2
3-(2,3-Dimethylphenyl)-2'-methoxypropiophenone
CAS 898769-02-3C18H20O2
3-(2,3-Dimethylphenyl)-1-(4-methoxyphenyl)propan-1-one
CAS 898769-08-9C18H20O2
3-(2,4-Dimethylphenyl)-2'-methoxypropiophenone
CAS 898793-59-4C18H20O2
3-(2,4-Dimethylphenyl)-4'-methoxypropiophenone
CAS 898793-63-0C18H20O2
3-(2,5-Dimethylphenyl)-2'-methoxypropiophenone
CAS 898794-80-4C18H20O2
3-(2,5-Dimethylphenyl)-4'-methoxypropiophenone
CAS 898794-84-8C18H20O2
3-(2,6-Dimethylphenyl)-4'-methoxypropiophenone
CAS 898754-37-5C18H20O2
3-(3,4-Dimethylphenyl)-3'-methoxypropiophenone
CAS 898755-65-2C18H20O2
6-Methyl-2-(4-T-butylphenyl)benzoic acid
CAS 1261908-10-4C18H20O2
1,3-Dioxane, 4,4-dimethyl-2,6-diphenyl-
CAS 17383-99-2C18H20O2
Delta8,9-dehydroestrone-16,16-d2
CAS 1219799-27-5C18H20O2
![4-Methyl-2-(1-methylethyl)-5-[(1E)-2-phenylethenyl]-1,3-benzenediol chemical structure, C18H20O2, CAS 2657659-60-2](/s/ROZLHMQMKANDCD-MDZDMXLPSA-N.svg)
4-Methyl-2-(1-methylethyl)-5-[(1E)-2-phenylethenyl]-1,3-benzenediol
CAS 2657659-60-2C18H20O2
3-(Biphenyl-4-yl)-3-methoxypentan-2-one
CAS 5457-34-1C18H20O2
9,10-Diethyl-4,4a,4b,5-tetrahydrophenanthrene-3,6-dione
CAS 38321-53-8C18H20O2
Ethyl 2,4-diphenylbutanoate
CAS 53608-81-4C18H20O2
Ethyl 2,3-diphenylbutanoate
CAS 93902-88-6C18H20O2
9-Dehydroestrone
CAS 35419-83-1C18H20O2
3-(tert-Butyl)-2-hydroxy-5-methylphenyl phenyl ketone
CAS 52196-46-0C18H20O2
![1-(4'-Methoxy[1,1'-biphenyl]-4-yl)pentan-1-one chemical structure, C18H20O2, CAS 56116-77-9](/s/OOTYDZODCWXARS-UHFFFAOYSA-N.svg)
1-(4'-Methoxy[1,1'-biphenyl]-4-yl)pentan-1-one
CAS 56116-77-9C18H20O2
2-(3,4-Dimethylphenoxy)-1-(4-methylphenyl)propan-1-one
CAS 540520-33-0C18H20O2
- 4-[(2,4-Dimethylbenzyl)oxy]chromane866155-74-0C18H20O2
- Benzene, 1,1'-[(2-methylene-1,3-propanediyl)bis(oxymethylene)]bis-27441-79-8C18H20O2
- 2-Isopropyl-5,6,7,8-tetrahydro-8-methyl-3,4-phenanthrenedione127791-76-8C18H20O2
- 2-(Benzyloxy)-3-(tert-butyl)benzaldehyde882533-04-2C18H20O2
- 2-(Benzyloxy)-4-(tert-butyl)benzaldehyde2058889-27-1C18H20O2
- 1,2-Bis(4-ethylphenyl)-2-hydroxyethanone2768-60-7C18H20O2
- 4'-tert-Butyl-4-methoxybiphenyl-3-carbaldehyde923281-56-5C18H20O2
- Ethyl 4-([1,1'-biphenyl]-4-yl)butanoate6660-36-2C18H20O2
- 6-(4-Phenylphenyl)hexanoic acid5002-16-4C18H20O2
- 4-(4-tert-Butylbenzyloxy)benzaldehyde172931-92-9C18H20O2
- 1-(2,6-Dimethylphenyl)-3-(2-methoxyphenyl)propan-1-one898770-03-1C18H20O2
- 3',4'-Dimethyl-3-(2-methoxyphenyl)propiophenone898770-06-4C18H20O2
- 1-(3,5-Dimethylphenyl)-3-(2-methoxyphenyl)propan-1-one898770-09-7C18H20O2
- 1-(2,3-Dimethylphenyl)-3-(3-methoxyphenyl)propan-1-one898774-76-0C18H20O2
- 3',5'-Dimethyl-3-(3-methoxyphenyl)propiophenone898774-84-0C18H20O2
- 1-(2,5-Dimethylphenyl)-3-(4-methoxyphenyl)propan-1-one898775-84-3C18H20O2
- 1-(2,6-Dimethylphenyl)-3-(4-methoxyphenyl)propan-1-one898775-86-5C18H20O2
- 1-(3,5-Dimethylphenyl)-3-(4-methoxyphenyl)propan-1-one898775-90-1C18H20O2
- 3-(2,3-Dimethylphenyl)-1-(3-methoxyphenyl)propan-1-one898769-05-6C18H20O2
- 3-(2,4-Dimethylphenyl)-3'-methoxypropiophenone898793-61-8C18H20O2
- 3-(2,5-Dimethylphenyl)-3'-methoxypropiophenone898794-82-6C18H20O2
- 3-(2,6-Dimethylphenyl)-1-(2-methoxyphenyl)propan-1-one898754-32-0C18H20O2
- 3-(2,6-Dimethylphenyl)-1-(3-methoxyphenyl)propan-1-one898754-34-2C18H20O2
- 3-(3,4-Dimethylphenyl)-2'-methoxypropiophenone898755-63-0C18H20O2
- 3-(3,4-Dimethylphenyl)-1-(4-methoxyphenyl)propan-1-one898755-68-5C18H20O2
- 3-(3,5-Dimethylphenyl)-1-(2-methoxyphenyl)propan-1-one898780-14-8C18H20O2
- 3-(3,5-Dimethylphenyl)-1-(3-methoxyphenyl)propan-1-one898780-17-1C18H20O2
- 3-(3,5-Dimethylphenyl)-1-(4-methoxyphenyl)propan-1-one898780-20-6C18H20O2
- 9-[2-(2-Methoxyethoxy)ethyl]-9H-fluorene113647-98-6C18H20O2
- 5-(4-tert-Butylphenyl)-2-methylbenzoic acid1492710-00-5C18H20O2
- (E)-2-Ethyl-1,3-dimethoxy-5-styrylbenzene141509-19-5C18H20O2
- 8a-Benzyl-5-methyl-3,4,8,8a-tetrahydronaphthalene-1,6(2H,7H)-dione1802481-61-3C18H20O2
- 17beta-Dihydroequilenin-4,16,16-d31276056-90-6C18H20O2
- Benvitimod impurity 32901016-39-3C18H20O2
- 2-(4-Phenethylphenyl)ethyl acetate5345-17-5C18H20O2
- 9,10-Diethyl-9,10-dihydroanthracene-9,10-diol6321-62-6C18H20O2
- 9,10-Dimethoxy-9,10-dimethyl-9,10-dihydroanthracene6321-63-7C18H20O2
- 7-Methyl-7-naphthalen-1-yl-6,8-dioxaspiro[3.5]nonane31053-76-6C18H20O2
- 4-(1,2,3,4-Tetrahydrophenanthren-1-yl)butanoic acid7478-68-4C18H20O2
- [4-(2-Phenylpropan-2-yl)phenyl] propanoate7500-84-7C18H20O2
- Benzoic acid, 2,4-dimethyl-, (2,5-dimethylphenyl)methyl ester55000-44-7C18H20O2
- 2,5-Dimethylbenzoic acid (2,5-dimethylphenyl)methyl ester55000-49-2C18H20O2
- Benzoic acid, 2,4-dimethyl-, (2,4-dimethylphenyl)methyl ester55000-43-6C18H20O2
- 2,4-Dimethylbenzoic acid (3,5-dimethylphenyl)methyl ester55000-45-8C18H20O2
- 3,5-Dimethylphenyl 2,4,6-trimethylbenzoate304673-87-8C18H20O2
- Methylpropylstilbestrol4050-86-6C18H20O2
- (E)-1,4-Bis(benzyloxy)but-2-ene68972-93-0C18H20O2
- [1,1'-Biphenyl]-2,2'-diol, 5-(2-propenyl)-5'-propyl-95384-65-9C18H20O2
- Cyclohexylidenbisphenol51041-46-4C18H20O2
- a-(4-Methylbenzyl)-4-methylbenzenepropanoic acid115865-08-2C18H20O2
- a-(2-Methylbenzyl)-2-methylbenzenepropanoic acid115865-18-4C18H20O2
- [4-(2,2-Dimethylpropoxy)phenyl](phenyl)methanone210694-01-2C18H20O2
- 1-Butyl-1,2,3,4-tetrahydroanthracene-9,10-dione52651-52-2C18H20O2
- 1-(4-Methoxyphenyl)-5-phenylpentan-1-one61022-41-1C18H20O2
- 3-[4-(t-Butyl)benzyloxy]benzaldehyde172931-91-8C18H20O2
- 1,1'-(But-2-ene-1,4-diyl)bis(4-methoxybenzene)61549-44-8C18H20O2
- 4'-tert-Butyl-6-methylbiphenyl-2-carboxylic acid1048367-61-8C18H20O2
- tert-Butyl-4-(4-tolyl)benzoate578026-66-1C18H20O2
- Methyl 2-(4-tert-butylphenyl)benzoate1528793-37-4C18H20O2
- (2.2)-Paracyclophane, 2,5-dimethoxy-65317-00-2C18H20O2
- 2-(3,4-Dimethylphenoxy)-1-(3,4-dimethylphenyl)ethanone692289-27-3C18H20O2
- 2-(3,5-Dimethylphenoxy)-1-(3,4-dimethylphenyl)ethanone540520-44-3C18H20O2
- 2-(2,3-Dimethylphenoxy)-1-(3,4-dimethylphenyl)ethanone540520-29-4C18H20O2
- 4'-[(2s)-2-Methylbutyl]-[1,1'-biphenyl]-4-carboxylic acid62614-48-6C18H20O2
- 1-(4-Butoxyphenyl)-2-phenylethanone63192-19-8C18H20O2
- Ethanone, 1-[4-(1,1-dimethylethyl)phenyl]-2-hydroxy-2-phenyl-116360-27-1C18H20O2
- 1,2-Cyclohexanediol, 1,2-diphenyl-65926-98-9C18H20O2
- 2H-Pyran, tetrahydro-2-[[2-(1-naphthalenyl)-2-propenyl]oxy]-853401-63-5C18H20O2
- [1,1'-Biphenyl]-4-pentanoic acid, 2-methyl-230962-32-0C18H20O2
- 2-[(Butan-2-yl)oxy]-1,2-diphenylethan-1-one21217-83-4C18H20O2
- 3,3-Dimethyl-6,6-diphenyl-1,2-dioxane79889-25-1C18H20O2
- 2-(tert-Butoxy)-1,2-diphenylethanone51891-91-9C18H20O2
- 4'-(Pentyloxy)-[1,1'-biphenyl]-4-carbaldehyde569685-14-9C18H20O2
- (2E)-3-(4-tert-Butylphenyl)-1-(5-methylfuran-2-yl)prop-2-en-1-one1061523-83-8C18H20O2
- 1-(3-Hydroxyphenyl)-1,3,3-trimethylindan-5-ol102856-23-5C18H20O2
- 4-Butylphenyl 4-methylbenzoate52709-88-3C18H20O2
Frequently asked questions
What is the molar mass of C18H20O2?
The molar mass of C18H20O2 is 268.36 g/mol, calculated from standard atomic weights for 18 carbon atoms, 20 hydrogen atoms and 2 oxygen atoms. The monoisotopic mass is 276.1965 Da.
How many compounds have the formula C18H20O2?
CompoundList lists 331 compounds with the molecular formula C18H20O2, including 3',4'-Dimethyl-3-(3-methoxyphenyl)propiophenone, 2',3'-Dimethyl-3-(4-methoxyphenyl)propiophenone, 2',4'-Dimethyl-3-(4-methoxyphenyl)propiophenone. 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 C18H20O2?
C18H20O2 has a degree of unsaturation of 9. 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.