Molecular formula
C18H20O5
129 compounds have this formula on CompoundList.
- Molar mass
- 316.35g/mol
- Monoisotopic mass
- 316.1311Da
- Atoms
- 43
- Elements
- 3
- Rings plus double bonds
- 9
The formula C18H20O5 describes a molecule made of 18 carbon atoms, 20 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 × 1868.34%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 206.37%1.008 × 20 = 20.160 g/mol
- O Oxygen × 525.29%15.999 × 5 = 79.995 g/mol
Look up another formula
Compounds with the formula C18H20O5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 129 compounds
Combretastatin A4
CAS 117048-59-6C18H20O5
2-Methoxy-5-(2-(3,4,5-trimethoxyphenyl)ethenyl)phenol
CAS 117048-62-1C18H20O5
Isocombretastatin A4
CAS 1067880-31-2C18H20O5
Loureirin B
CAS 119425-90-0C18H20O5
Sorgolactone
CAS 141262-39-7C18H20O5
![2-[(3-Methyl-6-oxo-7,8,9,10-tetrahydrobenzo[c][1]benzopyran-1-yl)oxy]propanoic acid methyl ester chemical structure, C18H20O5, CAS 307550-53-4](/s/ZWNAXHWQBFOLGY-UHFFFAOYSA-N.svg)
2-[(3-Methyl-6-oxo-7,8,9,10-tetrahydrobenzo[c][1]benzopyran-1-yl)oxy]propanoic acid methyl ester
CAS 307550-53-4C18H20O5
Epiafzelechin trimethyl ether
CAS 3143-21-3C18H20O5
Dibenzo-15-crown 5-Ether
CAS 14262-60-3C18H20O5
![Propan-2-yl 2-[(6-methyl-4-oxo-2,3-dihydro-1H-cyclopenta[c]chromen-7-yl)oxy]acetate chemical structure, C18H20O5, CAS 6146-80-1](/s/JVFGOVGADBUNEC-UHFFFAOYSA-N.svg)
Propan-2-yl 2-[(6-methyl-4-oxo-2,3-dihydro-1H-cyclopenta[c]chromen-7-yl)oxy]acetate
CAS 6146-80-1C18H20O5
Guieranone A
CAS 503609-12-9C18H20O5
5-((1Z)-2-(3,4-Dimethoxyphenyl)ethenyl)-2,3-dimethoxyphenol
CAS 117048-60-9C18H20O5
3,5-Dimethylphenyl 3,4,5-trimethoxybenzoate
CAS 283171-40-4C18H20O5
![Methyl 2-{4,8-dimethyl-7-[(2-methylallyl)oxy]-2-oxo-2H-chromen-3-yl}acetate chemical structure, C18H20O5, CAS 694505-05-0](/s/NBABXPOMTZGRIX-UHFFFAOYSA-N.svg)
Methyl 2-{4,8-dimethyl-7-[(2-methylallyl)oxy]-2-oxo-2H-chromen-3-yl}acetate
CAS 694505-05-0C18H20O5
Chermesinone B
CAS 1881246-18-9C18H20O5
Flavokawin A
CAS 3791-75-1C18H20O5
Laurycolactone B
CAS 85643-77-2C18H20O5
1,2-Bis(3,4-dimethoxyphenyl)ethanone
CAS 4927-55-3C18H20O5
![2-Methyl 3-(2-oxo-2-phenylethyl) bicyclo[2.2.1]heptane-2,3-dicarboxylate chemical structure, C18H20O5, CAS 488786-68-1](/s/XFUVBHSAVQVDEC-UHFFFAOYSA-N.svg)
2-Methyl 3-(2-oxo-2-phenylethyl) bicyclo[2.2.1]heptane-2,3-dicarboxylate
CAS 488786-68-1C18H20O5
3-(3-Benzyloxy-4,5-dimethoxy-phenyl)-propionic acid
CAS 89356-57-0C18H20O5
2,5-Dimethylphenyl 3,4,5-trimethoxybenzoate
CAS 497059-41-3C18H20O5
Sdz-lap-977
CAS 150779-71-8C18H20O5
1-(3,4-Dimethoxyphenyl)-3-(4-methoxyphenoxy)propan-1-one
CAS 312948-38-2C18H20O5
![4-[2-(2-Ethoxyphenoxy)ethoxy]-3-methoxybenzaldehyde chemical structure, C18H20O5, CAS 6436-11-9](/s/RYEWIDJFNMZINW-UHFFFAOYSA-N.svg)
4-[2-(2-Ethoxyphenoxy)ethoxy]-3-methoxybenzaldehyde
CAS 6436-11-9C18H20O5
Anticancer agent 182
CAS 133342-90-2C18H20O5
- Cnidiadin41137-88-6C18H20O5
- Candenatenin A1179348-32-3C18H20O5
- 4-Hydroxy-5,7,4'-trimethoxyflavan10493-01-3C18H20O5
- threo-Honokitriol1099687-80-5C18H20O5
- Lentinellic acid115219-90-4C18H20O5
- Ethyl 2-[(3-methyl-6-oxo-7,8,9,10-tetrahydrobenzo[c]chromen-1-yl)oxy]acetate307550-46-5C18H20O5
- Pterolinus C1297315-13-9C18H20O5
- (R)-O-Isobutyroyllomatin440094-38-2C18H20O5
- Butyl [(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yl)oxy]acetate301308-96-3C18H20O5
- 9,10-Dihydro-3,5,6,7-tetramethoxyphenanthren-2-ol39499-88-2C18H20O5
- Dalberatin C651300-10-6C18H20O5
- Dalberatin A651300-03-7C18H20O5
- Dalberatin B651300-06-0C18H20O5
- Pulchelstyrene B855281-31-1C18H20O5
- Pulchelstyrene C855281-33-3C18H20O5
- 2,3-Dimethylphenyl 3,4,5-trimethoxybenzoate723759-28-2C18H20O5
- Pochonin F544712-84-7C18H20O5
- O-Methylodoratol94943-13-2C18H20O5
- Verimol B212516-35-3C18H20O5
- 7-Hydroxy-2',3',4'-trimethoxyisoflavan2243403-57-6C18H20O5
- Cistifolin31685-99-1C18H20O5
- 2H-1-Benzopyran-3-ol, 3,4-dihydro-5,7-dimethoxy-2-(4-methoxyphenyl)-98637-91-3C18H20O5
- Sequosempervirin B864719-17-5C18H20O5
- Shikonofuran A85022-66-8C18H20O5
- 2'-Hydroxy-3',4',6'-trimethoxydihydrochalcone1222818-87-2C18H20O5
- beta-D-Xylopyranoside, 4-(phenylmethyl)phenyl99482-88-9C18H20O5
- beta-D-Xylopyranoside, 3-(phenylmethyl)phenyl147029-82-1C18H20O5
- Verimol A212516-34-2C18H20O5
- Methyl (1R,4aS,7aS)-1-benzyloxy-7-hydroxymethyl-1,4a,5,7a-tetrahydrocyclopenta[c]pyran-4-carboxylate206755-40-0C18H20O5
- (2S)-4'-Hydroxy-5,7,3'-trimethoxyflavan185146-55-8C18H20O5
- 4,2',6'-Trihydroxy-4'-methoxy-3',5'-dimethyldihydrochalcone97208-71-4C18H20O5
- Arnebifuranone94805-71-7C18H20O5
- 2-Hydroxy-4,5,6-trimethoxydihydrochalcone209861-22-3C18H20O5
- 7-O-Methylisomucronulatol137217-83-5C18H20O5
- Ethyl 7-(allyloxy)-4-oxo-8-propyl-4H-chromene-2-carboxylate248595-13-3C18H20O5
- Ethyl 2-((6-oxo-7,8,9,10-tetrahydro-6H-benzo(C)chromen-3-yl)oxy)propanoate304870-76-6C18H20O5
- 2-(4-Methoxyphenyl)-1-(2,3,4-trimethoxyphenyl)ethanone38412-56-5C18H20O5
- 2-Hydroxy-3,4,6-trimethoxydihydrochalcone279219-89-5C18H20O5
- 3-(4,8,8-Trimethyl-2-oxo-7,8-dihydro-2H,6H-pyrano[3,2-g]chromen-3-yl)propanoic acid956950-60-0C18H20O5
- Benzoic acid, 3-[(1S)-2-methoxy-1-methylethoxy]-5-(phenylmethoxy)-851885-41-1C18H20O5
- 3,4,6,7-Tetramethoxy-9,10-dihydrophenanthren-2-ol116963-91-8C18H20O5
- 6,7,9,10,12,13-Hexahydrodibenzo[b,e][1,4,7,10,13]pentaoxacyclopentadecine72011-23-5C18H20O5
- Monochaetin31020-94-7C18H20O5
- (+)-5,7,4'-Trimethoxyafzelechin918428-88-3C18H20O5
- 3-(3-Hydroxy-3-methylbutanyl)-2,4,6-trihydroxybenzophenone1432062-53-7C18H20O5
- 1 suppliers[1-[5-(2,5-Dihydroxyphenyl)furan-3-yl]-4-methylpent-3-enyl] acetateC18H20O5
- 4'-(Benzyloxy)-2',3',6'-trimethoxyacetophenone109250-66-0C18H20O5
- 5-[3-(2-Hydroxyphenyl)prop-2-en-1-yl]-2,3,4-trimethoxyphenol21148-37-8C18H20O5
- 2-{4,8-Dimethyl-7-[(3-methylbut-2-en-1-yl)oxy]-2-oxo-2H-chromen-3-yl}acetic acid858751-76-5C18H20O5
- 3-(2,4-Dimethoxyphenyl)-3-(4-methoxyphenyl)propanoic acid35582-70-8C18H20O5
- 4-Ethylphenyl 3,4,5-trimethoxybenzoate496033-79-5C18H20O5
- 3-{4,8-Dimethyl-7-[(2-methylallyl)oxy]-2-oxo-2H-chromen-3-yl}propanoic acid708216-95-9C18H20O5
- Methyl {4-methyl-7-[(3-methylbut-2-en-1-yl)oxy]-2-oxo-2H-chromen-3-yl}acetate694501-87-6C18H20O5
- Isopropyl [(7-methyl-4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-9-yl)oxy]acetate307549-51-5C18H20O5
- Ethyl (8,8-dimethyl-2-oxo-7,8-dihydro-2H,6H-pyrano[3,2-g]chromen-4-yl)acetate73291-02-8C18H20O5
- Methyl (4,8,8-trimethyl-2-oxo-7,8-dihydro-2H,6H-pyrano[3,2-g]chromen-3-yl)acetate859659-85-1C18H20O5
- Ethyl 2-[(6-methyl-4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yl)oxy]propanoate307548-92-1C18H20O5
- 4,9-Dimethoxyspiro[6H-furo[3,2-g]chromene-7,1'-cyclohexane]-5-one89820-31-5C18H20O5
- (3R)-3,4-Dihydro-3-(2,3,4-trimethoxyphenyl)-2H-1-benzopyran-7-ol136027-12-8C18H20O5
- Diethyl (6-methoxynaphthalen-2-yl)propanedioate57351-06-1C18H20O5
- Kuhlmanniquinol21044-87-1C18H20O5
- 2-(4-Methoxyphenyl)-1-(3,4,5-trimethoxyphenyl)ethanone205366-78-5C18H20O5
- rel-(+)-(1R,2S)-1-(5'-Allyl-2',6-dihydroxy-[1,1'-biphenyl]-3-yl)propane-1,2,3-triol1099687-82-7C18H20O5
- Acetic acid, 2-phenoxy-, 2-hydroxy-3-(2-methylphenoxy)propyl ester17753-04-7C18H20O5
- 3-Phenylpropionic acid, 5-methoxy-2-[2,3-dimethoxyphenyl]-145068-46-8C18H20O5
- 5-Methoxy-8,8-dimethyl-4-propyl-8,9-dihydro-2H,10H-pyrano[2,3-f]chromene-2,10-dione859665-16-0C18H20O5
- (-)-Sorgolactone202340-56-5C18H20O5
- 3-[4-(Benzyloxy)-3,5-dimethoxyphenyl]propanoic acid20947-48-2C18H20O5
- 2-(3,5-Dimethoxyphenyl)propan-2-yl phenyl carbonate39507-97-6C18H20O5
- 2-Naphthalenecarboxaldehyde, 4,5,6,8-tetramethoxy-3-(2-propenyl)-834867-21-9C18H20O5
- Ethyl 2-(3,4,5-trimethoxyphenyl)benzoate427886-70-2C18H20O5
- Methyl 2-{4,7-dimethyl-5-[(2-methylallyl)oxy]-2-oxo-2H-chromen-3-yl}acetate892558-59-7C18H20O5
- 7'-Dehydrozearalenone40785-63-5C18H20O5
- 1-(3-Hydroxyphenyl)-3-(3,4,5-trimethoxyphenyl)propan-1-one178445-84-6C18H20O5
- 1-(4-(2-(3,5-Bis(hydroxymethyl)phenoxy)ethoxy)phenyl)ethanone1239587-62-2C18H20O5
- 1-(2,4-Dihydroxyphenyl)-3-(2,4-dimethoxy-3-methylphenyl)propan-1-one1400999-35-0C18H20O5
Frequently asked questions
What is the molar mass of C18H20O5?
The molar mass of C18H20O5 is 316.35 g/mol, calculated from standard atomic weights for 18 carbon atoms, 20 hydrogen atoms and 5 oxygen atoms. The monoisotopic mass is 316.1311 Da.
How many compounds have the formula C18H20O5?
CompoundList lists 129 compounds with the molecular formula C18H20O5, including Combretastatin A4, 2-Methoxy-5-(2-(3,4,5-trimethoxyphenyl)ethenyl)phenol, Isocombretastatin A4. 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 C18H20O5?
C18H20O5 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.