Molecular formula
C19H18O2
105 compounds have this formula on CompoundList.
- Molar mass
- 278.35g/mol
- Monoisotopic mass
- 278.1307Da
- Atoms
- 39
- Elements
- 3
- Rings plus double bonds
- 11
The formula C19H18O2 describes a molecule made of 19 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 × 1981.99%12.011 × 19 = 228.209 g/mol
- H Hydrogen × 186.52%1.008 × 18 = 18.144 g/mol
- O Oxygen × 211.50%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C19H18O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 105 compounds
3-(4-Methoxyphenyl)-5-phenyl-2-cyclohexen-1-one
CAS 25960-26-3C19H18O2
2-(4-Ethoxybenzylidene)-1-tetralone
CAS 148090-24-8C19H18O2
RefChem:819044
CAS 5423-06-3C19H18O2
Bay 367620
CAS 232605-26-4C19H18O2
2-tert-Amylanthraquinone
CAS 32588-54-8C19H18O2
9,10-Anthracenedione, 2-pentyl-
CAS 13936-21-5C19H18O2
4-(5-Methyl-3-phenyl-1-benzofuran-2-yl)butan-2-one
CAS 256450-28-9C19H18O2
2-(2,3,4,5-Tetramethylphenyl)indene-1,3-dione
CAS 51689-82-8C19H18O2
![4,4-Dimethyl-3'-phenylspiro[3H-naphthalene-2,2'-oxirane]-1-one chemical structure, C19H18O2, CAS 22219-66-5](/s/DBSWOIVXLYIEDN-UHFFFAOYSA-N.svg)
4,4-Dimethyl-3'-phenylspiro[3H-naphthalene-2,2'-oxirane]-1-one
CAS 22219-66-5C19H18O2
5-Hydroxy-1,7-diphenyl-4E,6E-dien-3-heptanone
CAS 87095-77-0C19H18O2
Ethyl 2-methyl-4,4-diphenylbuta-2,3-dienoate
CAS 5717-43-1C19H18O2
![(6E)-6-[(4-Methoxyphenyl)methylene]-8,9-dihydro-7H-benzo[7]annulen-5-one chemical structure, C19H18O2, CAS 101001-13-2](/s/RVHBOFDLRWNNMW-DTQAZKPQSA-N.svg)
(6E)-6-[(4-Methoxyphenyl)methylene]-8,9-dihydro-7H-benzo[7]annulen-5-one
CAS 101001-13-2C19H18O2
![6-[(E)-(3-Methoxyphenyl)methylidene]-6,7,8,9-tetrahydro-5H-benzo[a]cyclohepten-5-one chemical structure, C19H18O2, CAS 112547-47-4](/s/NALDNRRPUWIPLG-FOWTUZBSSA-N.svg)
6-[(E)-(3-Methoxyphenyl)methylidene]-6,7,8,9-tetrahydro-5H-benzo[a]cyclohepten-5-one
CAS 112547-47-4C19H18O2
(4Z,6E)-5-Hydroxy-1,7-diphenylhepta-4,6-dien-3-one
CAS 478313-96-1C19H18O2
2-(4-(tert-Butyl)phenyl)-1H-indene-1,3(2H)-dione
CAS 13935-96-1C19H18O2
(R)-3-(Naphthalen-1-yloxy)-1-phenylpropan-1-ol
CAS 156453-53-1C19H18O2
3-(1-Naphthalenyloxy)-1-phenyl-1-propanol
CAS 908291-72-5C19H18O2
Ethyl 9,10-dihydro-9,10-ethanoanthracene-11-carboxylate
CAS 86367-71-7C19H18O2
![6-(2-Methoxybenzylidene)-6,7,8,9-tetrahydro-5H-benzo[a]cyclohepten-5-one chemical structure, C19H18O2, CAS 224948-28-1](/s/LFFKFHNNULFLHQ-DTQAZKPQSA-N.svg)
6-(2-Methoxybenzylidene)-6,7,8,9-tetrahydro-5H-benzo[a]cyclohepten-5-one
CAS 224948-28-1C19H18O2
![Phenol, 2-methoxy-5-[2-(2-naphthalenyl)ethyl]- chemical structure, C19H18O2, CAS 71691-25-3](/s/AWZJEZRSZBCIRO-UHFFFAOYSA-N.svg)
Phenol, 2-methoxy-5-[2-(2-naphthalenyl)ethyl]-
CAS 71691-25-3C19H18O2
![6b,7-Dihydro-6b-hydroxy-1,6,7,9-tetramethyl-8H-cyclopent[a]acenaphthylen-8-one chemical structure, C19H18O2, CAS 146885-82-7](/s/BBRNUTRKWSLVBB-UHFFFAOYSA-N.svg)
6b,7-Dihydro-6b-hydroxy-1,6,7,9-tetramethyl-8H-cyclopent[a]acenaphthylen-8-one
CAS 146885-82-7C19H18O2
9,10-Anthracenedione, 2-(1,2-dimethylpropyl)-
CAS 68892-28-4C19H18O2
1,7-Diphenyl-5-hydroxy-4,6-hepten-3-one
C19H18O2
9,10-Anthracenedione, 2-(3-methylbutyl)-
CAS 24646-67-1C19H18O2
- 2-sec-Pentylanthraquinone75931-61-2C19H18O2
- 1-Pentylanthracene-9,10-dione64111-86-0C19H18O2
- 1,3-Indandione, 2-(2,3,5,6-tetramethylphenyl)-6549-59-3C19H18O2
- tert-Butyl anthracene-9-carboxylate1734-16-3C19H18O2
- Dapoxetine impurity 13156453-50-8C19H18O2
- 2-tert-Butyl-2-phenyl-1H-indene-1,3(2H)-dione58325-77-2C19H18O2
- Ethanone, 1-(4,5-dihydro-2-methyl-5,5-diphenyl-3-furanyl)-102860-77-5C19H18O2
- Ethyl (9,10-methanoanthracen-9(10H)-yl)acetate60070-74-8C19H18O2
- Ethyl (2E)-5,5-diphenyl-2,4-pentadienoate120342-72-5C19H18O2
- trans-8-Methyl-8,9,10,11-tetrahydrobenz(a)anthracene-8,9-diol94849-82-8C19H18O2
- trans-8-Methyl-1,2,3,4-tetrahydrobenz(a)anthracene-3,4-diol94849-78-2C19H18O2
- [2-[(4-Methoxynaphthalen-1-yl)methyl]phenyl]methanol60049-60-7C19H18O2
- Naphtho(2,1-b)furan-2-methanol, 6,7,8,9-tetrahydro-alpha-phenyl-117238-83-2C19H18O2
- Ethanone, 1,1'-(1,2-cyclopropanediyldi-4,1-phenylene)bis-, cis-97974-87-3C19H18O2
- Naphthalene, 1,4-dimethoxy-2-(phenylmethyl)-68707-65-3C19H18O2
- 2(5H)-Furanone, 4-(1-methylethyl)-3,5-diphenyl-632358-82-8C19H18O2
- (13S)-3-Methoxy-13-methyl-11,12,13,16-tetrahydro-17H-cyclopenta[a]phenanthren-17-one56614-59-6C19H18O2
- 4-[5-Methoxy-2-(phenylethynyl)phenyl]butan-2-one112399-16-3C19H18O2
- Butan-2-yl anthracene-9-carboxylate189216-06-6C19H18O2
- 1-(4-Methoxyphenyl)-1-(naphthalen-2-yl)ethan-1-ol1188303-99-2C19H18O2
- trans-8-Methyl-1,2,3,4-tetrahydrobenz(a)anthracene-1,2-diol94849-70-4C19H18O2
- trans-4-Methyl-1,2,3,4-tetrahydrobenz(a)anthracene-3,4-diol94849-76-0C19H18O2
- 4-(4-Methylphenanthren-1-yl)butanoic acid6321-67-1C19H18O2
- 5a-Methyl-2-phenyl-5,5a,7,8-tetrahydronaphtho[2,1-b]furan-6(4H)-one30036-89-6C19H18O2
- 4-Hydroxy-5,5-dimethyl-3,4-diphenylcyclopent-2-en-1-one38661-94-8C19H18O2
- 2-(4-Methylphenyl)-6,7-dihydro-5H-benzocycloheptene-8-carboxylic acid229006-88-6C19H18O2
- Methyl 3-(4-(p-tolylethynyl)phenyl)propanoate1082059-33-3C19H18O2
- 6-tert-Butyl-2-phenyl-4H-1-benzopyran-4-one13448-23-2C19H18O2
- Benz(a)anthracene-10,11-diol, 8,9,10,11-tetrahydro-8-methyl-94849-89-5C19H18O2
- 2,5-Diphenyl-3-[(propan-2-yl)oxy]furan96324-33-3C19H18O2
- 5-(4-Methoxyphenyl)-3-phenyl-2-cyclohexen-1-one30314-01-3C19H18O2
- 4-Methyl-2,6-diphenylcyclohexane-1,3-dione84168-02-5C19H18O2
- 2-(4-Phenylbutyl)-4-benzofurancarboxaldehyde532399-80-7C19H18O2
- 7-([1,1'-Biphenyl]-4-yl)hept-5-ynoic acid88255-22-5C19H18O2
- 3,4-Diphenylcyclohex-3-ene-1-carboxylic acid62543-92-4C19H18O2
- 6-(Benzyloxy)-3,4-dihydro-1-methylnaphthalene-2-carbaldehyde847585-91-5C19H18O2
- 2-(3,5-Diethylphenyl)-1H-indene-1,3(2H)-dione55994-23-5C19H18O2
- (Anthracen-9-yl)methyl 2-methylpropanoate88315-77-9C19H18O2
- 2-Phenethyl-6-phenyl-2H-pyran-4(3H)-one1092060-08-6C19H18O2
- Ethyl 3-[4-(2-phenylethenyl)phenyl]-2-propenoate82603-77-8C19H18O2
- 2-(Benzyloxy)-1-(cyclopropylmethoxy)-4-ethynylbenzene1234500-55-0C19H18O2
- 9,10-Dimethoxy-2-(prop-1-en-2-yl)anthracene1558-41-4C19H18O2
- 9,10-Ethanoanthracene-9(10H)-propanoic acid6812-49-3C19H18O2
- 2-(Benzyloxy)-1-(cyclopropylmethoxy)-3-ethynylbenzene2816627-88-8C19H18O2
- 3-Cyclopenten-1-ol, 3,4-diphenyl-, 1-acetate15570-50-0C19H18O2
- 3-[(3-tert-Butylphenyl)methylidene]-2-benzofuran-1(3H)-one1071594-22-3C19H18O2
- Phenyl(2-{3-[(prop-2-en-1-yl)oxy]prop-1-yn-1-yl}phenyl)methanol1382240-59-6C19H18O2
- Methyl (7-phenyl-3,4-dihydronaphthalen-1(2H)-ylidene)acetate115812-38-9C19H18O2
- 8,8-Diphenyl-2-oxabicyclo[4.2.0]octan-7-one4173-54-0C19H18O2
- 1-(3-Methoxyphenyl)-5-(3-methylphenyl)penta-1,4-dien-3-one1030212-75-9C19H18O2
- 1,3-Dimethoxy-4-methyl-2-phenylnaphthalene72262-63-6C19H18O2
- Ethyl 3-(anthracen-2-yl)propanoate75802-32-3C19H18O2
- Spiro[6,7-dioxabicyclo[3.2.2]nonane-2,9'-fluorene]82238-77-5C19H18O2
- 2,5-Diphenyl-3-propoxyfuran96324-34-4C19H18O2
- 2-(4-Oxo-4-phenylbutan-2-yl)-2,3-dihydro-1H-inden-1-one112539-47-6C19H18O2
- 2,3,5,6-Tetramethyl-4-(phenylethynyl)benzoic acid140477-38-9C19H18O2
- 2-(3-tert-Butylphenyl)-1H-indene-1,3(2H)-dione13935-95-0C19H18O2
- 2-[(2-Methylphenyl)methoxy]-1-naphthalenemethanol1156688-97-9C19H18O2
- 2-[(3-Methylphenyl)methoxy]-1-naphthalenemethanol1156689-14-3C19H18O2
- 1-[4-(7-Acetyl-2,3-dihydro-1H-inden-4-yl)phenyl]ethanone1312609-70-3C19H18O2
- 5-(Phenanthren-9-yl)pentanoic acid88986-05-4C19H18O2
- {3-[Hydroxy(phenyl)methyl]bicyclo[1.1.1]pentan-1-yl}(phenyl)methanone125642-44-6C19H18O2
- 3-(4-Methylphenyl)-1-{2-[(prop-2-en-1-yl)oxy]phenyl}prop-2-en-1-one141522-34-1C19H18O2
- 2-[3-(2-Methylpropyl)phenyl]-1H-indene-1,3(2H)-dione185043-35-0C19H18O2
- 5,5-Dimethyl-7-phenyl-5,5a-dihydro-1H,3H-indeno[1,7a-c]furan-3-one184651-32-9C19H18O2
- 5-(4-Methoxyphenyl)-2-methyl-1-phenylpenta-1,4-dien-3-one264128-74-7C19H18O2
- 3-Phenylprop-2-EN-1-yl 4-phenylbut-3-enoate63257-81-8C19H18O2
- 3-Hydroxy-1,7-diphenylhepta-4,6-dien-1-one649772-10-1C19H18O2
- 5-(4-Methoxyphenyl)-1-(4-methylphenyl)penta-2,4-dien-1-one62643-80-5C19H18O2
- 1-(4-Methoxyphenyl)-5-(4-methylphenyl)penta-1,4-dien-3-one62643-60-1C19H18O2
- 3,7-Diphenylhept-6-ene-2,5-dione62619-67-4C19H18O2
- (1,3-Dimethyl-1H-inden-1-yl)(4-methoxyphenyl)methanone62291-89-8C19H18O2
- Butyl 4-(phenylethynyl)benzoate827028-24-0C19H18O2
- 3-Benzyl-2-methoxy-4-phenylcyclopent-2-en-1-one819814-19-2C19H18O2
- Ethyl 3-(9H-fluoren-2-yl)but-2-enoate915312-58-2C19H18O2
- Ethyl 3,5-diphenylpenta-2,4-dienoate33415-78-0C19H18O2
Frequently asked questions
What is the molar mass of C19H18O2?
The molar mass of C19H18O2 is 278.35 g/mol, calculated from standard atomic weights for 19 carbon atoms, 18 hydrogen atoms and 2 oxygen atoms. The monoisotopic mass is 278.1307 Da.
How many compounds have the formula C19H18O2?
CompoundList lists 105 compounds with the molecular formula C19H18O2, including 3-(4-Methoxyphenyl)-5-phenyl-2-cyclohexen-1-one, 2-(4-Ethoxybenzylidene)-1-tetralone, RefChem:819044. 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 C19H18O2?
C19H18O2 has a degree of unsaturation of 11. 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.