Molecular formula

C₂₀H₁₈O₉

24 compounds have this formula on CompoundList.

Molar mass: 402.36g/mol
Monoisotopic mass: 402.0951Da
Atoms: 47
Elements: 3
Rings plus double bonds: 12

The formula C20H18O9 describes a molecule made of 20 carbon atoms, 18 hydrogen atoms and 9 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 × 2059.70%
12.011 × 20 = 240.220 g/mol
H Hydrogen × 184.51%
1.008 × 18 = 18.144 g/mol
O Oxygen × 935.79%
15.999 × 9 = 143.991 g/mol

Look up another formula

Compounds with the formula C20H18O9

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 24 of 24 compounds

Frangulin B

CAS 14101-04-3C₂₀H₁₈O₉

2-((1S)-3-(Acetyloxy)-1-(hydroxymethyl)propyl)-1,3,6,8-tetrahydroxy-9,10-anthracenedione

CAS 70979-72-5C₂₀H₁₈O₉

6,6'-((4-Methoxyphenyl)methylene)bis(5-hydroxy-2-(hydroxymethyl)-4H-pyran-4-one)

CAS 96306-51-3C₂₀H₁₈O₉

Integrastatin B

CAS 324518-09-4C₂₀H₁₈O₉

2-(beta-D-Glucopyranosyloxy)-1-hydroxy-9,10-anthracenedione

CAS 31297-82-2C₂₀H₁₈O₉

8-C-alpha-L-Arabinopyranosylapigenin

CAS 38642-55-6C₂₀H₁₈O₉

Variecolorquinone A

CAS 1000369-48-1C₂₀H₁₈O₉

9-(Ethoxymethyl)-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxo-11H-dibenzo(b,e)(1,4)dioxepin-7-carboxylic acid

CAS 489-49-6C₂₀H₁₈O₉

Alizarin-2-beta-D-galactopyranoside

CAS 288262-81-7C₂₀H₁₈O₉

5,2',5'-Trihydroxy-3,7,8-trimethoxyflavone 2'-acetate

CAS 117259-17-3C₂₀H₁₈O₉

Gossypetin 3,7,3'-trimethyl ether 8-acetate

CAS 83159-16-4C₂₀H₁₈O₉

Danthron glucoside

CAS 53797-18-5C₂₀H₁₈O₉

2-(1,3-Benzodioxol-5-yl)-7-hydroxy-3,5,6,8-tetramethoxy-4H-1-benzopyran-4-one

CAS 244260-16-0C₂₀H₁₈O₉

Phrymarolin B

CAS 1363160-29-5C₂₀H₁₈O₉

1-(beta-D-Glucopyranosyloxy)-4-hydroxy-9,10-anthracenedione

CAS 39115-11-2C₂₀H₁₈O₉

5'-Demethylaquillochin

CAS 305364-91-4C₂₀H₁₈O₉

Diethylene glycol phthalate

CAS 7447-67-8C₂₀H₁₈O₉

9,10-Anthracenedione, 1-(alpha-D-glucopyranosyloxy)-8-hydroxy-

CAS 59952-41-9C₂₀H₁₈O₉

4-((2-((4-((2-Hydroxyethoxy)carbonyl)benzoyl)oxy)ethoxy)carbonyl)benzoic acid

CAS 23186-89-2C₂₀H₁₈O₉

7-Hydroxy-5,6,8,3'-tetramethoxy-4',5'-methylenedioxyflavone

CAS 119153-15-0C₂₀H₁₈O₉

9,10-Anthracenedione, 1-(alpha-L-arabinopyranosyloxy)-3,8-dihydroxy-6-methyl-

CAS 82780-62-9C₂₀H₁₈O₉

5-Hydroxy-3,7,8-trimethoxy-2-(7-methoxy-1,3-benzodioxol-5-yl)-4H-1-benzopyran-4-one

CAS 161697-25-2C₂₀H₁₈O₉

(7R)-8-Ethyl-7,8,9,10-tetrahydro-1,4,6,7beta,8alpha,10alpha,11-heptahydroxy-5,12-naphthacenedione

CAS 17514-32-8C₂₀H₁₈O₉

Resveratrol tris(methyl carbonate)

CAS 1361333-19-8C₂₀H₁₈O₉

Frequently asked questions

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What is the molar mass of C20H18O9?

The molar mass of C20H18O9 is 402.36 g/mol, calculated from standard atomic weights for 20 carbon atoms, 18 hydrogen atoms and 9 oxygen atoms. The monoisotopic mass is 402.0951 Da.

How many compounds have the formula C20H18O9?

CompoundList lists 24 compounds with the molecular formula C20H18O9, including Frangulin B, 2-((1S)-3-(Acetyloxy)-1-(hydroxymethyl)propyl)-1,3,6,8-tetrahydroxy-9,10-anthracenedione, 6,6'-((4-Methoxyphenyl)methylene)bis(5-hydroxy-2-(hydroxymethyl)-4H-pyran-4-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 C20H18O9?

C20H18O9 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.