Molecular formula
C20H18O5
198 compounds have this formula on CompoundList.
- Molar mass
- 338.36g/mol
- Monoisotopic mass
- 338.1154Da
- Atoms
- 43
- Elements
- 3
- Rings plus double bonds
- 12
The formula C20H18O5 describes a molecule made of 20 carbon atoms, 18 hydrogen atoms and 5 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 × 2071.00%12.011 × 20 = 240.220 g/mol
- H Hydrogen × 185.36%1.008 × 18 = 18.144 g/mol
- O Oxygen × 523.64%15.999 × 5 = 79.995 g/mol
Look up another formula
Compounds with the formula C20H18O5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 198 compounds
Demethoxycurcumin
CAS 22608-11-3C20H18O5
Glyceollin I
CAS 57103-57-8C20H18O5
Wighteone
CAS 51225-30-0C20H18O5
5,7-Dihydroxy-3-(4-hydroxyphenyl)-8-(3-methyl-2-buten-1-yl)-4H-1-benzopyran-4-one
CAS 104691-86-3C20H18O5
Licoflavone C
CAS 72357-31-4C20H18O5
Terphenyllin
CAS 52452-60-5C20H18O5
6-Prenylapigenin
CAS 68097-13-2C20H18O5
Isowighteone
CAS 68436-47-5C20H18O5
2-(6-Hydroxy-3-oxo-3H-xanthen-9-yl)-cyclohexanecarboxylic acid
CAS 500533-92-6C20H18O5
Methyl tanshinonate
CAS 18887-19-9C20H18O5
Yinyanghuo D
CAS 174286-25-0C20H18O5
Glyceollin iii
CAS 61080-23-7C20H18O5
![2-[(3-Benzyl-4,7-dimethyl-2-oxo-2H-chromen-5-yl)oxy]acetic acid chemical structure, C20H18O5, CAS 428845-48-1](/s/BUXSBYXHQMQTOF-UHFFFAOYSA-N.svg)
2-[(3-Benzyl-4,7-dimethyl-2-oxo-2H-chromen-5-yl)oxy]acetic acid
CAS 428845-48-1C20H18O5
Glyceollin ii
CAS 67314-98-1C20H18O5
Eurycarpin A
CAS 166547-20-2C20H18O5
Isodispar B
CAS 98192-64-4C20H18O5
(3,4-Dimethoxyphenyl)(8-hydroxy-4-methoxynaphthalen-1-yl)methanone
CAS 5915-42-4C20H18O5
Ethyl 2-methyl-5-(2-methylbenzoyloxy)-1-benzofuran-3-carboxylate
CAS 307551-66-2C20H18O5
1-(4-Hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl)-1,6-heptadiene-3,5-dione
CAS 24939-17-1C20H18O5
3-(4-Methoxyphenyl)-4-methyl-7-(2-oxopropoxy)-2H-chromen-2-one
CAS 869080-05-7C20H18O5
Citflavanone
CAS 70872-27-4C20H18O5
![[7-(Benzyloxy)-4,8-dimethyl-2-oxo-2H-chromen-3-yl]acetic acid chemical structure, C20H18O5, CAS 694506-64-4](/s/QCQNQYRVBTVEJF-UHFFFAOYSA-N.svg)
[7-(Benzyloxy)-4,8-dimethyl-2-oxo-2H-chromen-3-yl]acetic acid
CAS 694506-64-4C20H18O5
4-(2-Methylacryloyloxy)phenyl 4-allyloxybenzoate
CAS 159235-16-2C20H18O5
Hatomarubigin C
CAS 139501-92-1C20H18O5
- Tuberosin41347-45-9C20H18O5
- Glepidotin A42193-83-9C20H18O5
- Ethyl [(4-methyl-2-oxo-2H-chromen-7-yl)oxy](phenyl)acetate405916-56-5C20H18O5
- 4-{[(2-Oxo-4-propyl-2H-chromen-7-yl)oxy]methyl}benzoic acid304896-89-7C20H18O5
- (2S)-5-Hydroxy-7-methoxy-8-((E)-3-oxo-1-butenyl)flavanone610800-98-1C20H18O5
- [4-(7-Acetyloxy-2-methyl-2H-chromen-3-yl)phenyl] acetate10499-08-8C20H18O5
- RefChem:3571567596-81-8C20H18O5
- Glyinflanin B142750-23-0C20H18O5
- Crotalarin109517-68-2C20H18O5
- 4''-Dehydro-3-hydroxyterphenyllin1296205-84-9C20H18O5
- (7R,8S,9R)-9-(1,3-Benzodioxol-5-yl)-8,9-dihydro-7,8-dimethylnaphtho(1,2-d)-1,3-dioxol-6(7H)-one34426-79-4C20H18O5
- 7-[2-(4-Methoxyphenyl)-2-oxoethoxy]-3,4-dimethyl-2H-chromen-2-one374760-66-4C20H18O5
- Licoagroaurone325144-70-5C20H18O5
- 3,5,7-Trihydroxy-6-prenylflavone51948-71-1C20H18O5
- Ethyl 2-[(4-oxo-3-phenyl-4H-chromen-7-yl)oxy]propionate99007-84-8C20H18O5
- Paratocarpin K170900-13-7C20H18O5
- 3-(2-Methoxyphenyl)-4-oxo-4H-chromen-7-yl 2-methylpropanoate300814-02-2C20H18O5
- 8-(1,1-Dimethylallyl)genistein651750-08-2C20H18O5
- Daleformis186453-22-5C20H18O5
- (2E)-3-(2,4-Dihydroxyphenyl)-1-(5-hydroxy-2,2-dimethyl-2H-1-benzopyran-6-yl)-2-propen-1-one882305-50-2C20H18O5
- Broussoaurone A160262-52-2C20H18O5
- Buceracidin B485831-91-2C20H18O5
- Anthrasesamone D923013-90-5C20H18O5
- Ethyl 2-(2-methyl-4-oxo-3-phenylchromen-7-yl)oxyacetate20879-37-2C20H18O5
- Methyl 2-[(7-methyl-2-oxo-4-phenyl-2H-chromen-5-yl)oxy]propanoate307548-17-0C20H18O5
- 5-(7,10-Dihydro-4-methoxy-8-methylfuro(2,3-g)(1)benzoxepin-2-yl)-1,3-benzenediol73338-87-1C20H18O5
- Psoralenol70522-30-4C20H18O5
- Ethyl 2-phenyl-5-(propanoyloxy)-1-benzofuran-3-carboxylate300838-83-9C20H18O5
- 2-(2,4-Dihydroxy-5-prenylphenyl)-5,6-methylenedioxybenzofuran910457-10-2C20H18O5
- 2,3,6-Trimethylphenyl 8-methoxy-2-oxo-2H-chromene-3-carboxylate873857-31-9C20H18O5
- 6-Benzo[1,3]dioxol-5-yl-8-ethoxy-1,3-dimethyl-cyclohepta[c]furan-4-one332056-36-7C20H18O5
- 3-(2,3-Dihydro-1,4-benzodioxin-6-yl)-6-ethyl-7-methoxychromen-4-one170511-22-5C20H18O5
- 3-(4-Methoxyphenyl)-2-methyl-4-oxo-4H-chromen-7-yl propanoate610752-18-6C20H18O5
- 3-(4-Methoxyphenoxy)-7-((2-methylallyl)oxy)-4H-chromen-4-one637750-92-6C20H18O5
- Methylethyl 2-(4-oxo-3-phenylchromen-7-yloxy)acetate449738-71-0C20H18O5
- Methyl 2-(2-methyl-4-oxo-3-phenylchromen-7-yl)oxypropanoate618389-52-9C20H18O5
- Ethyl 2-[(2-oxo-3-phenyl-2H-chromen-7-yl)oxy]propanoate869080-88-6C20H18O5
- 3-(2-Methoxyphenoxy)-7-((2-methylallyl)oxy)-4H-chromen-4-one724740-65-2C20H18O5
- 3-(3-Methoxyphenoxy)-7-((2-methylallyl)oxy)-4H-chromen-4-one724740-67-4C20H18O5
- Ethyl 2-(4-methyl-2-oxo-3-phenylchromen-7-yl)oxyacetate179925-52-1C20H18O5
- Methyl 2-[(4-methyl-2-oxo-3-phenyl-2H-chromen-7-yl)oxy]propanoate869080-80-8C20H18O5
- Methyl 2-[(4-methyl-2-oxo-3-phenyl-2H-chromen-6-yl)oxy]propanoate869341-38-8C20H18O5
- 3-(4-Methoxyphenyl)-4-oxo-4H-chromen-7-yl 2-methylpropanoate858769-64-9C20H18O5
- 3-(4-Methoxyphenyl)-4,8-dimethyl-2-oxo-2H-chromen-7-yl acetate890631-69-3C20H18O5
- 3-(4-Methoxyphenyl)-4,5-dimethyl-2-oxo-2H-chromen-7-yl acetate890632-14-1C20H18O5
- SM 196B135635-83-5C20H18O5
- Decaspirone C920516-08-1C20H18O5
- Decaspirone F916227-98-0C20H18O5
- Lespecyrtin F11103684-13-4C20H18O5
- 6-(1,1-Dimethylallyl)genistein77390-42-2C20H18O5
- 3-(Benzo[d][1,3]dioxol-5-yl)-7-hydroxy-2-methyl-6-propyl-4H-chromen-4-one170241-50-6C20H18O5
- 3-(2,3-Dimethoxy-benzylidene)-5-(4-methoxy-phenyl)-3H-furan-2-one6621-90-5C20H18O5
- 3-(4-Methoxyphenyl)-4-methyl-2-oxo-2H-chromen-7-yl propanoate869080-14-8C20H18O5
- 3-(4-Methoxyphenyl)-2-oxo-2H-chromen-7-yl isobutyrate869080-18-2C20H18O5
- Dihydroalpinumisoflavone63807-90-9C20H18O5
- Corylifol C775351-91-2C20H18O5
- 2-(4-Methoxyphenyl)-5-[(2-methylprop-2-en-1-yl)oxy]-1-benzofuran-3-carboxylic acid929451-05-8C20H18O5
- Vitrofolal A261903-75-7C20H18O5
- 2,6-Bis((3,4-dihydroxyphenyl)methylene)cyclohexanone142381-66-6C20H18O5
- Apiocarpin83919-96-4C20H18O5
- Isopinnatal149471-07-8C20H18O5
- Vismiaguianin A308348-44-9C20H18O5
- 3H,7H-Furo(3,2-c:5,4-f')bis(1)benzopyran-6b,10(12bH)-diol, 3,3-dimethyl-, (6bS,12bS)-34144-10-0C20H18O5
- Morachalcone B1304030-91-8C20H18O5
- 2-Isoprenylemodin82345-58-2C20H18O5
- 5-Deoxyglyasperin F190510-82-8C20H18O5
- Methuyl tanshinonate135355-72-5C20H18O5
- Neoraufurane53734-76-2C20H18O5
- Abyssinone A1039071-39-0C20H18O5
- [(3-Benzyl-4,8-dimethyl-2-oxo-2H-chromen-7-yl)oxy]acetic acid374707-77-4C20H18O5
- 7-[2-(3-Methoxyphenyl)-2-oxoethoxy]-3,4-dimethyl-2H-chromen-2-one690679-80-2C20H18O5
- (5-Phenylfuran-2-yl)(3,4,5-trimethoxyphenyl)methanone1311195-62-6C20H18O5
- Ethyl 2-methyl-5-(4-methylbenzoyloxy)-1-benzofuran-3-carboxylate315237-49-1C20H18O5
- Ethyl 2-[(2-benzylidene-3-oxo-2,3-dihydro-1-benzofuran-6-yl)oxy]propanoate7048-71-7C20H18O5
- 4'-Methylrecordil78298-71-2C20H18O5
- Isopropyl 2-((2-oxo-4-phenyl-2H-chromen-7-yl)oxy)acetate307547-13-3C20H18O5
Frequently asked questions
What is the molar mass of C20H18O5?
The molar mass of C20H18O5 is 338.36 g/mol, calculated from standard atomic weights for 20 carbon atoms, 18 hydrogen atoms and 5 oxygen atoms. The monoisotopic mass is 338.1154 Da.
How many compounds have the formula C20H18O5?
CompoundList lists 198 compounds with the molecular formula C20H18O5, including Demethoxycurcumin, Glyceollin I, Wighteone. 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 C20H18O5?
C20H18O5 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.