Molecular formula
C19H18O3
140 compounds have this formula on CompoundList.
- Molar mass
- 294.35g/mol
- Monoisotopic mass
- 294.1256Da
- Atoms
- 40
- Elements
- 3
- Rings plus double bonds
- 11
The formula C19H18O3 describes a molecule made of 19 carbon atoms, 18 hydrogen atoms and 3 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 × 1977.53%12.011 × 19 = 228.209 g/mol
- H Hydrogen × 186.16%1.008 × 18 = 18.144 g/mol
- O Oxygen × 316.31%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C19H18O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 140 compounds
Tanshinone iia
CAS 568-72-9C19H18O3
(2-Butylbenzofuran-3-yl) (4-hydroxyphenyl) ketone
CAS 52490-15-0C19H18O3
(1E,4E)-1,5-Bis(2-methoxyphenyl)penta-1,4-dien-3-one
CAS 39777-61-2C19H18O3
Bis(4-methoxybenzylidene)acetone
CAS 37951-12-5C19H18O3
Eupomatenoid 5
CAS 41744-28-9C19H18O3
9-Phenyl-3,4,5,6,7,9-hexahydro-2H-xanthene-1,8-dione
CAS 95200-84-3C19H18O3
6-Ethyl-7-methoxy-2-methyl-3-phenyl-4H-chromen-4-one
CAS 129414-72-8C19H18O3
3-Methoxy-2-(2-styrylphenyl)propenic acid methyl ester
CAS 103455-29-4C19H18O3
4-Allyl-2-methoxyphenyl cinnamate
CAS 532-08-1C19H18O3
1(2H)-Naphthalenone, 3,4-dihydro-2-((3,4-dimethoxyphenyl)methylene)-, (E)-
CAS 130689-14-4C19H18O3
(2Z)-2-(4-tert-Butylbenzylidene)-6-hydroxy-1-benzofuran-3(2H)-one
CAS 620545-95-1C19H18O3
1,5-Bis(4-methoxyphenyl)-1,4-pentadien-3-one
CAS 2051-07-2C19H18O3
4-Methyl-3-((3-methyl-2-butenyl)oxy)-6H-benzo(C)chromen-6-one
CAS 374758-53-9C19H18O3
3-(1-(4-Ethylphenyl)ethyl)-4-hydroxycoumarin
CAS 109688-27-9C19H18O3
7-Isopropoxy-2-methyl-3-phenyl-4H-chromen-4-one
CAS 35212-25-0C19H18O3
Ethyl 4-oxo-1-phenyl-1,2,3,4-tetrahydronaphthalene-2-carboxylate
CAS 7399-03-3C19H18O3
Prop-2-en-1-yl 3-oxo-2,4-diphenylbutanoate
CAS 6274-68-6C19H18O3
![13,14,15,16-Tetrahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-11(12H)-one chemical structure, C19H18O3, CAS 969-00-6](/s/ZMESGXPQBUTYGV-UHFFFAOYSA-N.svg)
13,14,15,16-Tetrahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-11(12H)-one
CAS 969-00-6C19H18O3
1,7-Bis(4-hydroxyphenyl)hepta-4,6-dien-3-one
CAS 332371-82-1C19H18O3
2-(2,3-Dimethoxybenzylidene)-1-tetralone
CAS 101480-19-7C19H18O3
(1E,4E)-1,5-Bis(3-methoxyphenyl)penta-1,4-dien-3-one
CAS 458533-66-9C19H18O3
Alnusone
CAS 52330-11-7C19H18O3
7-(Benzyloxy)-6-ethyl-4-methyl-2H-chromen-2-one
CAS 327048-29-3C19H18O3
Isotanshinone IIA
CAS 20958-15-0C19H18O3
- 7-Ethoxy-2,8-dimethyl-3-phenyl-4H-chromen-4-one315233-56-8C19H18O3
- 3-Benzyl-7-methoxy-4,8-dimethylchromen-2-one329049-65-2C19H18O3
- 7-Butoxy-4-phenylchromen-2-one85297-22-9C19H18O3
- 2-(4-tert-Butylphenyl)-3-hydroxy-4H-chromen-4-one724754-30-7C19H18O3
- 3-Hydroxy-6-methyl-2-(4-propan-2-ylphenyl)chromen-4-one854005-84-8C19H18O3
- (2-Ethylbenzofuran-3-yl)(4-hydroxy-3,5-dimethylphenyl)methanone52489-58-4C19H18O3
- 2-(4-tert-Butylphenyl)-5-hydroxy-4H-1-benzopyran-4-one207905-97-3C19H18O3
- 2-(3-Methyl-5,6,7,8-tetrahydronaphthalene-2-carbonyl)benzoic acid5441-08-7C19H18O3
- 3-(4-(Benzyloxy)phenyl)hex-4-ynoic acid1043941-15-6C19H18O3
- 3-Isopentadienyl-3',4,5'-trihydroxystilbene170557-18-3C19H18O3
- 5-[4-(Phenylmethoxy)phenyl]-1,3-cyclohexanedione762243-30-1C19H18O3
- 1,2-Didehydrocryptotanshinone891854-92-5C19H18O3
- 1-(2,4,5-Trimethoxybenzylidene)-1H-indene2448-79-5C19H18O3
- 3-(4-(Benzyloxy)phenyl)cyclopent-1-ene-1-carboxylic acid2138813-79-1C19H18O3
- 4,4'-Bis(allyloxy)benzophenone136074-26-5C19H18O3
- 4-Ethyl-7-[(3-methylbenzyl)oxy]-2H-chromen-2-one6145-47-7C19H18O3
- 7-Methyl-4-phenyl-5-propoxychromen-2-one307548-11-4C19H18O3
- (2E)-6-Methoxy-2-[(4-methoxyphenyl)methylidene]-3,4-dihydronaphthalen-1-one87384-01-8C19H18O3
- (Z)-2-(4-Isopropylbenzylidene)-6-methoxybenzofuran-3(2H)-one858758-42-6C19H18O3
- Coumarin, 3-(2,6-diethylphenyl)-4-hydroxy-73791-08-9C19H18O3
- 1-Benzoxepin-5(2H)-one, 3,4-dihydro-4-((4-methoxyphenyl)methylene)-7-methyl-56071-25-1C19H18O3
- Methyl 5-oxo-2,3-diphenylcyclopentanecarboxylate10498-83-6C19H18O3
- 7-Methoxy-2-(4-methoxybenzylidene)-1,2,3,4-tetrahydronaphthalen-1-one141247-30-5C19H18O3
- 4-Hydroxy-3-(1-phenylbutyl)-2H-1-benzopyran-2-one15074-24-5C19H18O3
- Pentyl 9-oxo-9H-fluorene-4-carboxylate94302-83-7C19H18O3
- 7-Methyl-2,3,8,9,10,11-hexahydro[1]benzofuro[2,3-f]cyclopenta[c]chromen-4(1H)-one374710-70-0C19H18O3
- 7-(Benzyloxy)-3-ethyl-4-methyl-2H-chromen-2-one296265-91-3C19H18O3
- 7,9,9-Trimethyl-10,11-dihydrobenzo[c]pyrano[3,2-g]chromen-5-one858761-38-3C19H18O3
- 2H-1-Benzopyran-2-one, 4-methoxy-3-(1-phenylpropyl)-96436-66-7C19H18O3
- 3,17-Dihydroxytricyclo[12.3.1.12,6]nonadeca-1(17),2,4,6(19),10,14(18),15-heptaen-9-oneC19H18O3
- 6-Methyl-2,3,8,9,10,11-hexahydro[1]benzofuro[3,2-g]cyclopenta[c]chromen-4(1H)-one374710-14-2C19H18O3
- 2,2-Bis(Hydroxymethyl)-3,4-dihydro-1(2H)-napthalenonebenzaldehyde acetal338404-87-8C19H18O3
- 4-[3-(2-Methylphenoxy)phenyl]cyclohexane-1,3-dione866152-44-5C19H18O3
- Indene, 1-(3,4,5-trimethoxybenzylidene)-2428-31-1C19H18O3
- 1,3,5-Pentanetrione, 1,5-bis(4-methylphenyl)-36200-40-5C19H18O3
- 1-(2,6-Dimethoxyphenyl)-2-methoxynaphthalene920981-22-2C19H18O3
- 2-(3,5-Diethyl-4-hydroxyphenyl)indene-1,3-dione69574-15-8C19H18O3
- 7-(Benzyloxy)-3,4,8-trimethyl-2H-chromen-2-one320350-75-2C19H18O3
- (E)-1-(4-Methoxyphenyl)-3-(4-prop-2-enoxyphenyl)prop-2-en-1-one352562-26-6C19H18O3
- 1H-Inden-1-one, 5-methoxy-4-(1-methylethoxy)-3-phenyl-850404-09-0C19H18O3
- 3-(Benzyloxy)-2-[(benzyloxy)methyl]furan76833-05-1C19H18O3
- Ethyl 3-[3-(4-methylbenzoyl)phenyl]prop-2-enoate87849-56-7C19H18O3
- 5-Phenyl-3-(1-phenylpropyl)tetronic acid69354-73-0C19H18O3
- Methyl 9-(but-3-enyl)-9H-xanthene-9-carboxylate1427421-47-3C19H18O3
- 1-(6-Hydroxy-3-methoxy-2,4-dimethylphenyl)-naphthalen-2-ol1832513-56-0C19H18O3
- 5'-(2-Methoxyphenyl)-2',3'-dihydrospiro[cyclopropane-1,1'-indene]-2-carboxylic acid2241127-84-2C19H18O3
- 2-(5-Hydroxy-2-phenyl-5,7,8,9-tetrahydrobenzo[7]annulen-6-ylidene)acetic acid2368927-41-5C19H18O3
- Bicyclo(3.1.0)hex-2-ene-6carboxylic acid, (5-(phenylmethyl)-3-furanyl)methyl ester, (1alpha,5alpha,6alph)-98974-80-2C19H18O3
- (3E)-3-[(3,5-Diethyl-4-hydroxyphenyl)methylidene]-2-benzofuran-1-one69574-10-3C19H18O3
- 5-[(E)-3-Phenylprop-2-enyl]-6-prop-2-enoxy-1,3-benzodioxole61006-20-0C19H18O3
- Ethyl 3-oxo-5,5-diphenylpent-4-enoate89861-28-9C19H18O3
- 2-(4-tert-Butylphenyl)-1-benzofuran-6-carboxylic acid104224-12-6C19H18O3
- 5-(Benzyloxy)-2-(methoxycarbonyl)-3,4-dihydronaphthalene475086-72-7C19H18O3
- 3,5-Dimethylbenzyl 2H-chromene-3-carboxylate1110845-23-2C19H18O3
- Methyl 2-oxo-4,4-diphenylcyclopentane-1-carboxylate819802-98-7C19H18O3
- 2-Methoxy-6-(4-phenyl-buta-1,3-dienyl)-benzoic acid methyl ester365543-06-2C19H18O3
- 3-Benzylidene-5-(3,4-dimethoxy-phenyl)-2,3-dihydro-furan1171924-23-4C19H18O3
- Phenol, 4-(4,4-dimethyl-4H-1-benzopyran-2-yl)-, 1-acetate884501-00-2C19H18O3
- Ethyl 2-(1-phenylcyclopropanecarbonyl)benzoate1309195-86-5C19H18O3
- 4-Biphenyl-4-yl-5,6-dihydro-2H-pyran-3-carboxylic acid methyl ester1068522-77-9C19H18O3
- Ethyl 2-oxo-6-phenyl-1,2,3,4-tetrahydronaphthalene-1-carboxylate1062649-09-5C19H18O3
- Ethyl 2,5-diphenyl-4,5-dihydrofuran-3-carboxylate112778-58-2C19H18O3
- 4-(1-Naphthalenyl)-2-oxo-3-cyclohexene-1-carboxylic acid ethyl ester2411792-88-4C19H18O3
- Dehydroacerogenin C152041-27-5C19H18O3
- Methyl 1-ethoxy-2,3-diphenyl-2-cyclopropene-1-carboxylate32936-70-2C19H18O3
- 2,4(3H,5H)-Furandione, 5-phenyl-3-(1-phenylpropyl)-70740-90-8C19H18O3
- (5-Benzylfuran-3-yl)methyl (1R,5S,6R)-bicyclo(3.1.0)hex-3-ene-6-carboxylate98875-07-1C19H18O3
- 1-Methoxy-4-[(3E)-5-(4-methoxyphenoxy)pent-3-en-1-yn-1-yl]benzene166762-96-5C19H18O3
- 1,1'-Spirobi[1H-inden]-3(2H)-one, 2',3'-dihydro-5,5'-dimethoxy-609337-94-2C19H18O3
- 1,4-Hexanedione, 3-benzoyl-1-phenyl-583029-18-9C19H18O3
- Benzoic acid, 4-(2-hydroxy-1-methylene-4-phenyl-4-pentenyl)-153881-20-0C19H18O3
- 3-(4-Methoxyphenyl)-5,5-dimethyl-4-phenyl-2(5H)-furanone83253-77-4C19H18O3
- 2-(Benzyloxy)-1,4-dimethoxynaphthalene88381-79-7C19H18O3
- 1,7-Diphenylheptane-1,4,7-trione62619-60-7C19H18O3
- (2R)-4-Phenyl-2-(phenylmethoxymethyl)-2,3-dihydropyran-6-one130129-11-2C19H18O3
- (R)-Rugulactone-11384529-16-1C19H18O3
Frequently asked questions
What is the molar mass of C19H18O3?
The molar mass of C19H18O3 is 294.35 g/mol, calculated from standard atomic weights for 19 carbon atoms, 18 hydrogen atoms and 3 oxygen atoms. The monoisotopic mass is 294.1256 Da.
How many compounds have the formula C19H18O3?
CompoundList lists 140 compounds with the molecular formula C19H18O3, including Tanshinone iia, (2-Butylbenzofuran-3-yl) (4-hydroxyphenyl) ketone, (1E,4E)-1,5-Bis(2-methoxyphenyl)penta-1,4-dien-3-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 C19H18O3?
C19H18O3 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.