Molecular formula
C20H18O3
134 compounds have this formula on CompoundList.
- Molar mass
- 306.36g/mol
- Monoisotopic mass
- 306.1256Da
- Atoms
- 41
- Elements
- 3
- Rings plus double bonds
- 12
The formula C20H18O3 describes a molecule made of 20 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 × 2078.41%12.011 × 20 = 240.220 g/mol
- H Hydrogen × 185.92%1.008 × 18 = 18.144 g/mol
- O Oxygen × 315.67%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C20H18O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 134 compounds
1,1,1-Tris(4-hydroxyphenyl)ethane
CAS 27955-94-8C20H18O3
Lonchocarpin
CAS 31501-55-0C20H18O3
(2E,6E)-2,6-Bis(4-hydroxybenzylidene)cyclohexanone
CAS 18977-35-0C20H18O3
2-(Bis(4-hydroxyphenyl)methyl)benzenemethanol
CAS 81-92-5C20H18O3
![7-(1-Phenylethoxy)-2,3-dihydrocyclopenta[c]chromen-4(1H)-one chemical structure, C20H18O3, CAS 301227-33-8](/s/PLRRFMOUSARSTF-UHFFFAOYSA-N.svg)
7-(1-Phenylethoxy)-2,3-dihydrocyclopenta[c]chromen-4(1H)-one
CAS 301227-33-8C20H18O3
![3-(Benzyloxy)-7,8,9,10-tetrahydro-6H-benzo[c]chromen-6-one chemical structure, C20H18O3, CAS 320350-67-2](/s/RMBDGDFCQUTEBF-UHFFFAOYSA-N.svg)
3-(Benzyloxy)-7,8,9,10-tetrahydro-6H-benzo[c]chromen-6-one
CAS 320350-67-2C20H18O3
2,4-Bis(4'-hydroxybenzyl)phenol
CAS 34826-64-7C20H18O3
![9-(Benzyloxy)-7-methyl-2,3-dihydrocyclopenta[c]chromen-4(1H)-one chemical structure, C20H18O3, CAS 307549-60-6](/s/JZYAVQVNTWJYBL-UHFFFAOYSA-N.svg)
9-(Benzyloxy)-7-methyl-2,3-dihydrocyclopenta[c]chromen-4(1H)-one
CAS 307549-60-6C20H18O3
1,2-Dihydroxy-5,6-dimethyl-3,4-epoxy-1,2,3,4-tetrahydrochrysene
CAS 139562-15-5C20H18O3
7-Methyl-5-((2-methylallyl)oxy)-4-phenyl-2H-chromen-2-one
CAS 314743-41-4C20H18O3
2,6-Dibenzoylcyclohexan-1-one
CAS 16094-85-2C20H18O3
![7-(2-Phenylethoxy)-2,3-dihydrocyclopenta[c]chromen-4(1H)-one chemical structure, C20H18O3, CAS 324055-71-2](/s/IAVUBFJCQVFNSA-UHFFFAOYSA-N.svg)
7-(2-Phenylethoxy)-2,3-dihydrocyclopenta[c]chromen-4(1H)-one
CAS 324055-71-2C20H18O3
1,2-Dihydro-5,9-dimethyl-3,4-epoxy-1,2,3,4-tetrahydrochrysene
CAS 139493-54-2C20H18O3
Nigerapyrone A
CAS 1318240-72-0C20H18O3
7-((3-Methylbut-2-en-1-yl)oxy)-3-phenyl-4H-chromen-4-one
CAS 66346-74-5C20H18O3
7-((3-Methylbut-2-en-1-yl)oxy)-3-phenyl-2H-chromen-2-one
CAS 869079-90-3C20H18O3
4-Methyl-7-((2-methylallyl)oxy)-3-phenyl-2H-chromen-2-one
CAS 859661-95-3C20H18O3
rel-(1aR,2R,3S,11cS)-1a,2,3,11c-Tetrahydro-6,11-dimethylbenzo(6,7)phenanthro(3,4-b)oxirene-2,3-diol
CAS 86941-58-4C20H18O3
Ethyl 6-(4-methoxyphenyl)-2-naphthoate
CAS 1334137-82-4C20H18O3
![7-[(3-Methyl-2-butenyl)oxy]-4-phenyl-2H-chromen-2-one chemical structure, C20H18O3, CAS 53981-04-7](/s/ABLWAGJMSKIPNA-UHFFFAOYSA-N.svg)
7-[(3-Methyl-2-butenyl)oxy]-4-phenyl-2H-chromen-2-one
CAS 53981-04-7C20H18O3
![3,4-Dimethyl-7-{[(2E)-3-phenylprop-2-en-1-yl]oxy}-2H-chromen-2-one chemical structure, C20H18O3, CAS 907590-38-9](/s/JSZCZPUJFPDZEI-RMKNXTFCSA-N.svg)
3,4-Dimethyl-7-{[(2E)-3-phenylprop-2-en-1-yl]oxy}-2H-chromen-2-one
CAS 907590-38-9C20H18O3
![2,6-Bis[3-(furan-2-yl)prop-2-en-1-ylidene]cyclohexan-1-one chemical structure, C20H18O3, CAS 25671-98-1](/s/SHPLADCLSRWYLI-ZOFYMTOZSA-N.svg)
2,6-Bis[3-(furan-2-yl)prop-2-en-1-ylidene]cyclohexan-1-one
CAS 25671-98-1C20H18O3
![2,2'-[(2-Hydroxy-1,3-phenylene)bis(methylene)]diphenol chemical structure, C20H18O3, CAS 2677-32-9](/s/IVHIQAKUMAQRAT-UHFFFAOYSA-N.svg)
2,2'-[(2-Hydroxy-1,3-phenylene)bis(methylene)]diphenol
CAS 2677-32-9C20H18O3
3,4-Bis(benzyloxy)phenol
CAS 27688-86-4C20H18O3
- anti-5,6-Dimethylchrysene-1,2-dihydrodiol-3,4-epoxide139347-89-0C20H18O3
- 3-Ethoxy-4-(naphthalen-1-ylmethoxy)benzaldehyde443289-89-2C20H18O3
- Isolonchocarpin34198-88-4C20H18O3
- Benz(a)anthracene-3,4-diol, 3,4-dihydro-12-(hydroxymethyl)-7-methyl-, trans-69260-83-9C20H18O3
- 1H-Inden-1-one, 3-(acetyloxy)-2-(2,4,6-trimethylphenyl)-41905-79-7C20H18O3
- (±)-Anti-1,2-dihydroxy-3,4-epoxy-1,2,3,4-tetrahydro-5,7-dimethylchrysene117022-35-2C20H18O3
- anti-7-Eba-3,4-diol 1,2-oxide120693-41-6C20H18O3
- 3,5-Dibenzyloxyphenol63604-98-8C20H18O3
- 8,9,10,11-Tetrahydro-7,12-dimethylbenz(a)anthracene-8,9-diol-10-11-epoxide, anti-65763-31-7C20H18O3
- 12-Hydroxymethyl-7-methylbenz(a)anthracene-8,9-dihydrodiol, trans-70206-45-0C20H18O3
- 10,11-Dihydro-7-(hydroxymethyl)-12-methyl-benz(a)anthracene-10,11-diol, trans-71722-00-4C20H18O3
- 2-(4-Butoxybenzylidene)-1H-indene-1,3(2H)-dione178697-89-7C20H18O3
- 5,6-Dihydro-5,6-dihydroxy-7-hydroxymethyl-12-methylbenz(a)anthracene, trans-40495-42-9C20H18O3
- 2,7-Diphenyl-1,6-dioxadispiro(2.1.2.3)decan-4-one78843-45-5C20H18O3
- 8,8-Dimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromen-2-one81016-75-3C20H18O3
- (Z)-2-Benzylidene-6-((3-methylbut-2-en-1-yl)oxy)benzofuran-3(2H)-one858765-10-3C20H18O3
- (Z)-6-((2-Methylallyl)oxy)-2-(3-methylbenzylidene)benzofuran-3(2H)-one620547-28-6C20H18O3
- Benz(a)anthracene-3,4-diol, 3,4-dihydro-7-(hydroxymethyl)-12-methyl-69260-84-0C20H18O3
- Benz(a)anthracene-8,9-diol, 8,9-dihydro-7-(hydroxymethyl)-12-methyl-, trans-70234-58-1C20H18O3
- Ethoxy(naphthalen-1-yl)phenylacetic acid102077-83-8C20H18O3
- 3-Ethoxy-4-(2-naphthylmethoxy)benzaldehyde426217-17-6C20H18O3
- (Z)-6-((2-Methylallyl)oxy)-2-(4-methylbenzylidene)benzofuran-3(2H)-one858756-08-8C20H18O3
- (Z)-6-((2-Methylallyl)oxy)-2-(2-methylbenzylidene)benzofuran-3(2H)-one620547-29-7C20H18O3
- {2-[4-(Benzyloxy)phenoxy]phenyl}methanol449778-82-9C20H18O3
- 6-Oxo-6-(9-phenanthryl)hexanoic acid898766-05-7C20H18O3
- Ethyl 4-oxo-4-(9-phenanthryl)butyrate898752-85-7C20H18O3
- 10-tert-Butyl-7-methyl-5H-benzo[c]furo[3,2-g]chromen-5-one546113-98-8C20H18O3
- 1-Phenoxy-1,1-bis(p-hydroxyphenyl)ethane861011-04-3C20H18O3
- 2-Methoxy-6-(2-naphthalen-1-yl-ethyl)-benzoic acid1171924-00-7C20H18O3
- 2-Hydroxy-6-(2-naphthalen-2-yl-ethyl)-benzoic acid methyl ester1171921-63-3C20H18O3
- 4-(4-Benzyloxyphenyl)-2-methoxyphenol1261955-84-3C20H18O3
- syn-7,12-Dimethylbenz(a)anthracene-3,4-dihydrodiol 1,2-epoxide86941-59-5C20H18O3
- anti-1,2,3,4-Tetrahydro-5-ethylchrysene-1,2-diol-3,4-epoxide119613-62-6C20H18O3
- 2-(2-Oxo-2-phenylethyl)-5-phenylcyclohexane-1,3-dione35556-97-9C20H18O3
- (2E)-5,6-Dimethoxy-2-[(E)-3-phenylprop-2-enylidene]-3H-inden-1-one1025564-19-5C20H18O3
- 2,2',2''-(Ethane-1,1,1-triyl)triphenol125457-87-6C20H18O3
- Ethyl 4-(benzyloxy)-2-naphthoate188863-64-1C20H18O3
- 2-Hydroxy-6-(2-naphthalen-1-yl-ethyl)-benzoic acid methyl ester1171921-82-6C20H18O3
- 4-(2-Benzyloxyphenyl)-2-methoxyphenol1261949-90-9C20H18O3
- 5-(2-Benzyloxyphenyl)-2-methoxyphenol1261923-67-4C20H18O3
- 4-(3-Benzyloxyphenyl)-2-methoxyphenol1261968-82-4C20H18O3
- 5-(3-Benzyloxyphenyl)-2-methoxyphenol1261891-72-8C20H18O3
- 5-(4-Benzyloxyphenyl)-2-methoxyphenol1261949-97-6C20H18O3
- 2,6-Bis[(2-hydroxyphenyl)methylene]cyclohexanone66508-99-4C20H18O3
- 2-(4-Methoxyphenyl)-3-methyl-8-(prop-1-en-1-yl)-4H-1-benzopyran-4-one90101-79-4C20H18O3
- Dimethylbenz(a)anthracene-8,9-diol-10,11-epoxideC20H18O3
- 2-[3-(Hydroxymethyl)-1,4-dimethylnaphthalen-2-yl]benzoic acid94549-42-5C20H18O3
- 8-Methyl-7-[(2-methylprop-2-en-1-yl)oxy]-4-phenyl-2H-chromen-2-one307547-29-1C20H18O3
- (3E)-3-[(4-Methoxy-3-methylphenyl)methylidene]-5-(4-methylphenyl)furan-2-one347375-66-0C20H18O3
- 1,3-Cyclohexanedione, 5-phenyl-2-(phenylacetyl)-77054-16-1C20H18O3
- 2,6,7-Trioxabicyclo(2.2.2)octane, 1-(4-ethynylphenyl)-4-(4-methylphenyl)-134133-89-4C20H18O3
- 3,9-Dimethoxy-5,6-dihydrotetraphen-7-ol362689-32-5C20H18O3
- Ethyl 4-(1-naphthylmethoxy)benzoate56441-98-6C20H18O3
- Methyl 4-(benzyloxy)-8-methyl-2-naphthoate1662687-75-3C20H18O3
- Benz(a)anthracene-5,6-diol, 5,6-dihydro-12-(hydroxymethyl)-7-methyl-, trans-74257-12-8C20H18O3
- 1a,2,3,11b-Tetrahydro-4,11-dimethylbenz(7,8)anthra(1,2-b)oxirene-2,3-diol72690-00-7C20H18O3
- 1,4-Naphthalenedione,2-[hydroxy[4-(1-methylethyl)phenyl]methyl]-6629-22-7C20H18O3
- 6-(2,2-Diphenylethenyl)-3,4-dihydro-2H-pyran-5-carboxylic acid63014-61-9C20H18O3
- 8,9-Dihydro-8,9-dihydroxy-7-methylbenz(a)anthracene-12-methanol17470-94-9C20H18O3
- 1a,2,3,11b-Tetrahydro-4,11-dimethylbenz(5,6)anthra(1,2-b)oxirene-2,3-diol74351-41-0C20H18O3
- (3-Phenoxyphenyl)methyl (1R,5S,6S)-bicyclo(3.1.0)hex-3-ene-6-carboxylate98875-06-0C20H18O3
- 2-[1-(2-Methoxyphenyl)ethyl]naphthalene-1-carboxylic acid7499-25-4C20H18O3
- 4-Hydroxy-3-(2-phenylbutyl)naphthalene-1,2-dione199929-82-3C20H18O3
- (2Z,4Z)-2,4-Bis[(4-methoxyphenyl)methylidene]cyclobutan-1-one17078-44-3C20H18O3
- 5-Chrysenol, 11,12-dihydro-8,9-dimethoxy-340964-59-2C20H18O3
- 10,11-Dihydro-10,11-dihydroxy-12-methylbenz(a)anthracene-7-methanol28622-64-2C20H18O3
- 2'-(Benzyloxy)-5-methoxy[1,1'-biphenyl]-3-ol1262001-96-6C20H18O3
- 3'-(Benzyloxy)-5-methoxy[1,1'-biphenyl]-3-ol1261949-94-3C20H18O3
- 4'-(Benzyloxy)-5-methoxy[1,1'-biphenyl]-3-ol1261968-91-5C20H18O3
- 2,6-Bis(2-methoxyphenyl)phenol205869-76-7C20H18O3
- Bicyclo(3.1.0)hex-2-ene-6-carboxylic acid, (3-phenoxyphenyl)methyl ester, (1alpha,5alpha,6beta)-98974-79-9C20H18O3
- 2-[1-(6-Methoxynaphthalen-1-yl)ethyl]benzoic acid111238-07-4C20H18O3
- 7,11-Dimethyl-9a,10-dihydrotetrapheno[10,9-b]oxirene-8,8a(8H)-diol82049-33-0C20H18O3
- Butyl 3-(9-oxo-9H-fluoren-2-yl)acrylate352213-06-0C20H18O3
- (3Z)-5-(4-Ethylphenyl)-3-[(4-methoxyphenyl)methylidene]furan-2-one64661-87-6C20H18O3
- 2H-Pyran-2-one, 4-benzoyl-3,4-dihydro-3,3-dimethyl-6-phenyl-820209-12-9C20H18O3
Frequently asked questions
What is the molar mass of C20H18O3?
The molar mass of C20H18O3 is 306.36 g/mol, calculated from standard atomic weights for 20 carbon atoms, 18 hydrogen atoms and 3 oxygen atoms. The monoisotopic mass is 306.1256 Da.
How many compounds have the formula C20H18O3?
CompoundList lists 134 compounds with the molecular formula C20H18O3, including 1,1,1-Tris(4-hydroxyphenyl)ethane, Lonchocarpin, (2E,6E)-2,6-Bis(4-hydroxybenzylidene)cyclohexanone. 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 C20H18O3?
C20H18O3 has a degree of unsaturation of 12. 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.