Molecular formula

C₁₈H₁₂O₅

27 compounds have this formula on CompoundList.

Molar mass: 308.29g/mol
Monoisotopic mass: 308.0685Da
Atoms: 35
Elements: 3
Rings plus double bonds: 13

The formula C18H12O5 describes a molecule made of 18 carbon atoms, 12 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 × 1870.13%
12.011 × 18 = 216.198 g/mol
H Hydrogen × 123.92%
1.008 × 12 = 12.096 g/mol
O Oxygen × 525.95%
15.999 × 5 = 79.995 g/mol

Look up another formula

Compounds with the formula C18H12O5

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

Showing 1 to 27 of 27 compounds

(AlphaE)-alpha-(3-hydroxy-5-oxo-4-phenyl-2(5H)-furanylidene)benzeneacetic acid

CAS 26548-70-9C₁₈H₁₂O₅

6-Hydroxy-4-(7-methoxy-1-benzofuran-2-yl)chromen-2-one

CAS 859130-35-1C₁₈H₁₂O₅

(2-Phenoxycarbonylphenyl) furan-2-carboxylate

CAS 331673-01-9C₁₈H₁₂O₅

4-Acetylphenyl 2-oxo-2H-chromene-3-carboxylate

CAS 325805-39-8C₁₈H₁₂O₅

3-Benzoyl-2-oxo-2H-chromen-7-yl acetate

CAS 77819-97-7C₁₈H₁₂O₅

2-Oxo-2-phenylethyl 2-oxo-2H-chromene-3-carboxylate

CAS 304875-32-9C₁₈H₁₂O₅

11-Oxo-5,11-dihydro-10H-5,10-methanodibenzo[a,d][7]annulene-10,12-dicarboxylic acid

CAS 5469-59-0C₁₈H₁₂O₅

Neodulin

CAS 13401-64-4C₁₈H₁₂O₅

2,5-Diphenylfuran-3,4-dicarboxylic acid

CAS 19799-49-6C₁₈H₁₂O₅

Ascocorynin

CAS 6172-48-1C₁₈H₁₂O₅

Npc42245

C₁₈H₁₂O₅

Ligustrone A

CAS 58974-55-3C₁₈H₁₂O₅

2H-1-Benzopyran-2-one, 3-[3-(3,4-dihydroxyphenyl)-1-oxo-2-propenyl]-

CAS 401615-56-3C₁₈H₁₂O₅

(l)-Neodulin

C₁₈H₁₂O₅

(4-Methoxy-5,8-dioxonaphthalen-1-yl) benzoate

CAS 81194-55-0C₁₈H₁₂O₅

5,12-Dihydroxy-3,4-dihydrotetracene-2,6,11(1H)-trione

CAS 58977-09-6C₁₈H₁₂O₅

2-[1,3-Benzodioxol-4-yl(hydroxy)methyl]naphthalene-1,4-dione

CAS 6627-17-4C₁₈H₁₂O₅

6-(4-Carboxyphenoxy)-2-naphthoic acid

CAS 124396-97-0C₁₈H₁₂O₅

4'-(2-Methoxyphenyl)-3H,3'H-spiro[[2]benzofuran-1,2'-furan]-3,3'-dione

CAS 43053-11-8C₁₈H₁₂O₅

7-(4-Carboxyphenyl)-3-hydroxy-2-naphthalenecarboxylic acid

CAS 503827-89-2C₁₈H₁₂O₅

7-(1,3-Benzodioxol-5-yl)-3-hydroxy-2-naphthalenecarboxylic acid

CAS 503827-93-8C₁₈H₁₂O₅

3,4-Diphenylfuran-2,5-dicarboxylic acid

CAS 54607-68-0C₁₈H₁₂O₅

6,11-Dihydroxy-3-methoxy-12H-benzo[b]xanthen-12-one

CAS 89140-92-1C₁₈H₁₂O₅

2,4,6,9-Tetrahydroxytetraphen-5(6H)-one

CAS 91416-25-0C₁₈H₁₂O₅

Frequently asked questions

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What is the molar mass of C18H12O5?

The molar mass of C18H12O5 is 308.29 g/mol, calculated from standard atomic weights for 18 carbon atoms, 12 hydrogen atoms and 5 oxygen atoms. The monoisotopic mass is 308.0685 Da.

How many compounds have the formula C18H12O5?

CompoundList lists 27 compounds with the molecular formula C18H12O5, including (AlphaE)-alpha-(3-hydroxy-5-oxo-4-phenyl-2(5H)-furanylidene)benzeneacetic acid, 6-Hydroxy-4-(7-methoxy-1-benzofuran-2-yl)chromen-2-one, (2-Phenoxycarbonylphenyl) furan-2-carboxylate. 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 C18H12O5?

C18H12O5 has a degree of unsaturation of 13. 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.