Molecular formula
C18H16O5
225 compounds have this formula on CompoundList.
- Molar mass
- 312.32g/mol
- Monoisotopic mass
- 312.0998Da
- Atoms
- 39
- Elements
- 3
- Rings plus double bonds
- 11
The formula C18H16O5 describes a molecule made of 18 carbon atoms, 16 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 × 1869.22%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 165.16%1.008 × 16 = 16.128 g/mol
- O Oxygen × 525.61%15.999 × 5 = 79.995 g/mol
Look up another formula
Compounds with the formula C18H16O5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 225 compounds
5,7,4'-Trimethoxyflavone
CAS 5631-70-9C18H16O5
5,6,7-Trimethoxy-2-phenyl-4H-1-benzopyran-4-one
CAS 973-67-1C18H16O5
6,2',4'-Trimethoxyflavone
CAS 720675-90-1C18H16O5
Galangin 3,5,7-trimethyl ether
CAS 26964-29-4C18H16O5
Cabreuvin
CAS 1621-61-0C18H16O5
4',5,7-Trimethoxyisoflavone
CAS 1162-82-9C18H16O5
3',4',5'-Trimethoxyflavone
CAS 67858-30-4C18H16O5
1,3,7-Trihydroxy-2-(3-methylbut-2-enyl)-xanthone
CAS 20245-39-0C18H16O5
2-(4-Benzoyl-3-hydroxyphenoxy)ethyl acrylate
CAS 16432-81-8C18H16O5
3',4',7-Trimethoxyflavone
CAS 22395-24-0C18H16O5
Sideroxylin
CAS 3122-87-0C18H16O5
7,8-Dimethoxy-2-methyl-3-phenoxy-4H-chromen-4-one
CAS 315233-83-1C18H16O5
4',6,7-Trimethoxyisoflavone
CAS 798-61-8C18H16O5
![2-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-6-methoxychroman-4-one chemical structure, C18H16O5, CAS 136498-37-8](/s/VPUHJQWPTZSKEP-UHFFFAOYSA-N.svg)
2-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-6-methoxychroman-4-one
CAS 136498-37-8C18H16O5
3-(1,3-Benzodioxol-5-yl)-1-(3,4-dimethoxyphenyl)prop-2-en-1-one
CAS 51116-22-4C18H16O5
Tanshindiol C
CAS 97465-71-9C18H16O5
(2E)-1-(1,3-Benzodioxol-5-yl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one
CAS 88775-45-5C18H16O5
(2,5-Dimethoxyphenyl)-(5-methoxy-1-benzofuran-3-yl)methanone
CAS 310458-23-2C18H16O5
3,4-Methylenedioxy-2',4'-dimethoxychalcone
CAS 58344-60-8C18H16O5
3-(3,4-Dimethoxyphenyl)-7-hydroxy-4-methylchromen-2-one
CAS 548764-47-2C18H16O5
1,3,5-Trihydroxy-4-(3-methylbut-2-enyl)xanthen-9-one
CAS 53377-61-0C18H16O5
3-(3,4-Dimethoxyphenyl)-6-hydroxy-4-methyl-2H-chromen-2-one
CAS 720674-26-0C18H16O5
5-Hydroxy-3-(4-hydroxyphenyl)-7-propan-2-yloxychromen-4-one
CAS 637747-93-4C18H16O5
Ethyl 5-hydroxy-2-(4-methoxyphenyl)-1-benzofuran-3-carboxylate
CAS 5010-38-8C18H16O5
- Ethyl 5-hydroxy-2-(phenoxymethyl)-1-benzofuran-3-carboxylate171506-87-9C18H16O5
- 1-Butyl-3,6,8-trihydroxy-9,10-anthracenedione135161-97-6C18H16O5
- 1 suppliers2-(4-Methyl-2-oxo-6,7,8,9-tetrahydro-2H-benzofuro[3,2-g]chromen-3-yl)acetic acid664366-23-8C18H16O5
- 5,8-Dihydroxy-2-(2-(4-methoxyphenyl)ethyl)chromone128922-70-3C18H16O5
- 3-[2-(3,4-Dimethoxyphenyl)-2-oxoethyl]-2-benzofuran-1(3H)-one55377-46-3C18H16O5
- 8-Demethyleucalyptin5689-38-3C18H16O5
- 7,2',4'-Trimethoxyflavone7578-51-0C18H16O5
- 7,8,4'-Trimethoxyisoflavone37816-21-0C18H16O5
- (2E)-1-(1,3-Benzodioxol-5-yl)-3-(2,5-dimethoxyphenyl)-2-propen-1-one1202071-78-0C18H16O5
- 3-[2-(2,5-Dimethoxyphenyl)-2-oxoethyl]-3H-2-benzofuran-1-one73270-78-7C18H16O5
- 3-(2-Ethoxyphenoxy)-7-methoxy-4H-chromen-4-one637750-70-0C18H16O5
- 5,7,4'-Trimethoxy-4-phenylcoumarin74512-60-0C18H16O5
- 1 suppliers(7-Methyl-2-oxo-4-propylchromen-5-yl) furan-2-carboxylate432001-26-8C18H16O5
- 1 suppliersEthyl 2-(6-oxobenzo[c]chromen-3-yl)oxypropanoate302939-35-1C18H16O5
- 1,4,5-Trihydroxy-3-prenylxanthone136364-72-2C18H16O5
- Intricatin124166-25-2C18H16O5
- 1,3-Indandione, 2-(3,4,5-trimethoxyphenyl)-19225-22-0C18H16O5
- 2-(3,4-Dimethoxyphenyl)-6-methoxy-4H-chromen-4-one370583-46-3C18H16O5
- 1-(1,3-Benzodioxol-5-yl)-3-(2,4-dimethoxyphenyl)-2-propen-1-one561046-12-6C18H16O5
- (2E)-1-(1,3-Benzodioxol-5-yl)-3-(2,3-dimethoxyphenyl)prop-2-en-1-one561046-14-8C18H16O5
- 2-(3,4-Dimethoxyphenyl)-3-hydroxy-6-methylchromen-4-one93097-20-2C18H16O5
- 2-(1,1-Dimethyl-2-propenyl)-1,4,5-trihydroxy-9H-xanthen-9-one124676-46-6C18H16O5
- 3-(2-Ethoxyphenoxy)-7-hydroxy-2-methyl-4H-chromen-4-one637750-93-7C18H16O5
- 7-Ethoxy-3-(4-methoxyphenoxy)-4H-chromen-4-one302950-99-8C18H16O5
- Puerol B112343-17-6C18H16O5
- 3-(3,4-Dimethoxyphenyl)-7-methoxy-2H-chromen-2-one127073-90-9C18H16O5
- 3-(3,4-Dimethoxyphenyl)-7-hydroxy-2-methyl-4H-1-benzopyran-4-one54528-39-1C18H16O5
- Murayalactone157536-36-2C18H16O5
- 5,6-Dimethoxy-2-(2-methoxyphenyl)-4H-1-benzopyran-4-one16266-97-0C18H16O5
- 3,3',4'-Trimethoxyflavone78933-15-0C18H16O5
- 1 suppliersTanshindiol B97465-70-8C18H16O5
- 10,11-Dihydro-dibenzo(B,F)oxepine-4,6-dicarboxylic acid dimethyl ester14807-34-2C18H16O5
- (2E)-3-(2H-1,3-Benzodioxol-5-yl)-1-(2,5-dimethoxyphenyl)prop-2-en-1-one508225-85-2C18H16O5
- (E)-4-(3-(3,4-Dimethoxyphenyl)-3-oxoprop-1-en-1-yl)benzoic acid119568-10-4C18H16O5
- 4-[4-(2-Carboxybenzoyl)phenyl]butyric acid80866-86-0C18H16O5
- 7,8-Dimethoxy-2-(2-methoxyphenyl)-4H-chromen-4-one6969-07-9C18H16O5
- 8-Methoxybonducellin90996-27-3C18H16O5
- 1,3,8-Trimethoxy-6-methylanthracene-9,10-dione6414-42-2C18H16O5
- Resveratrol-3,5-diacetate411233-14-2C18H16O5
- 3-(3,4-Dimethoxyphenyl)-8-methoxychromen-2-one54208-22-9C18H16O5
- Phaeochromycin A865795-52-4C18H16O5
- Phaeochromycin C865795-54-6C18H16O5
- 2-(3,4-Dimethoxyphenyl)-5-hydroxy-7-methyl-4H-chromen-4-one70460-22-9C18H16O5
- (E)-4-(3-(2,4-Dimethoxyphenyl)-3-oxoprop-1-en-1-yl)benzoic acid1638521-29-5C18H16O5
- 6,7-Dimethoxy-3-(2-oxo-2-phenylethyl)-2-benzofuran-1(3H)-one302938-38-1C18H16O5
- 3-(2,4-Dimethoxyphenyl)-7-hydroxy-4-methylchromen-2-one859671-65-1C18H16O5
- 5,7,2'-Trimethoxyflavone4308-57-0C18H16O5
- Subspinosin80565-16-8C18H16O5
- 3-(2,5-Dimethoxyphenyl)-7-hydroxy-4-methyl-2H-chromen-2-one548764-45-0C18H16O5
- 2-(3,4,5-Trimethoxybenzoyl)-1-benzofuran940241-66-7C18H16O5
- 7-Methoxy-3-(4-methoxyphenoxy)-2-methyl-4H-chromen-4-one637749-34-9C18H16O5
- 7-Ethoxy-3-(3-methoxyphenoxy)-4H-chromen-4-one858765-13-6C18H16O5
- 7-Methoxy-3-(3-methoxyphenoxy)-2-methyl-4H-chromen-4-one858765-12-5C18H16O5
- 4',7-Dihydroxy-3-methoxy-5,6-dimethylflavone132020-55-4C18H16O5
- 5,2'-Dihydroxy-7-methoxy-6,8-dimethylflavone188444-28-2C18H16O5
- 3,4',7-Trimethoxy flavone20979-40-2C18H16O5
- 7-Ethoxy-3-(2-methoxyphenoxy)-4H-chromen-4-one637751-42-9C18H16O5
- 3-(2,4-Dimethoxyphenyl)-7-methoxy-2H-chromen-2-one6468-59-3C18H16O5
- 3-(2,5-Dimethoxyphenyl)-7-methoxy-2H-chromen-2-one6468-62-8C18H16O5
- 5,7-Dimethoxy-3-(2-methoxyphenyl)-4H-chromen-4-one5065-01-0C18H16O5
- Norwogonin 5,7,8-trimethyl ether23050-38-6C18H16O5
- 7-Methoxy-3-(2-methoxyphenoxy)-2-methyl-4H-chromen-4-one858759-86-1C18H16O5
- 3-(2,5-Dimethoxyphenyl)-6-hydroxy-4-methylchromen-2-one864752-76-1C18H16O5
- 2-(2,3,4-Trimethoxyphenyl)-4H-chromen-4-one7143-46-6C18H16O5
- 7-[(4-Methoxyphenyl)methyl]-7,8-dihydro-[1,3]dioxolo[4,5-h]chromen-6-one1174902-42-1C18H16O5
- 2-(3,4-Dimethoxyphenyl)-7-hydroxy-5-methyl-4H-chromen-4-one15236-03-0C18H16O5
- 4-Butyl-2-oxo-2H-chromen-7-yl furan-2-carboxylate446279-70-5C18H16O5
- Litseaone B1352033-75-0C18H16O5
- 3-(2,3-Dihydro-1,4-benzodioxin-6-yl)-1-(2-hydroxy-5-methoxyphenyl)prop-2-en-1-one106584-16-1C18H16O5
- Bangangxanthone B869648-17-9C18H16O5
- (Z)-2-(2,4-Dimethoxybenzylidene)-6-hydroxy-4-methylbenzofuran-3(2H)-one904510-30-1C18H16O5
- Pancixanthone A174232-30-5C18H16O5
- (6S)-6,7,8,9-Tetrahydro-6-hydroxy-6-hydroxymethyl-1-methylphenanthro(1,2-b)furan-10,11-dione97411-46-6C18H16O5
- Sclerodione104855-19-8C18H16O5
- Tanshindiol AC18H16O5
- 7,8-Dimethoxy-4-(4-methoxyphenyl)-2H-chromen-2-one185418-37-5C18H16O5
Frequently asked questions
What is the molar mass of C18H16O5?
The molar mass of C18H16O5 is 312.32 g/mol, calculated from standard atomic weights for 18 carbon atoms, 16 hydrogen atoms and 5 oxygen atoms. The monoisotopic mass is 312.0998 Da.
How many compounds have the formula C18H16O5?
CompoundList lists 225 compounds with the molecular formula C18H16O5, including 5,7,4'-Trimethoxyflavone, 5,6,7-Trimethoxy-2-phenyl-4H-1-benzopyran-4-one, 6,2',4'-Trimethoxyflavone. 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 C18H16O5?
C18H16O5 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.