Molecular formula

C₂₁H₁₄O₅

27 compounds have this formula on CompoundList.

Molar mass: 346.34g/mol
Monoisotopic mass: 346.0841Da
Atoms: 40
Elements: 3
Rings plus double bonds: 15

The formula C21H14O5 describes a molecule made of 21 carbon atoms, 14 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 × 2172.83%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 144.07%
1.008 × 14 = 14.112 g/mol
O Oxygen × 523.10%
15.999 × 5 = 79.995 g/mol

Look up another formula

Compounds with the formula C21H14O5

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

Showing 1 to 27 of 27 compounds

[(6-Oxo-6H-benzo[c]chromen-3-yl)oxy](phenyl)acetic acid

CAS 405917-25-1C₂₁H₁₄O₅

Wailupemycin G

CAS 426264-58-6C₂₁H₁₄O₅

Fluorescein Methyl ester

CAS 70672-06-9C₂₁H₁₄O₅

Ethyl 4,9-dioxo-2-phenyl-4,9-dihydronaphtho[2,3-b]furan-3-carboxylate

CAS 351342-44-4C₂₁H₁₄O₅

2-Methyl-4-oxo-3-phenyl-4H-chromen-7-yl furan-2-carboxylate

CAS 858768-34-0C₂₁H₁₄O₅

3'-Hydroxy-6'-methoxy-3H-spiro(2-benzofuran-1,9'-xanthen)-3-one

CAS 65144-30-1C₂₁H₁₄O₅

4-Oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yl 1-benzofuran-2-carboxylate

CAS 307505-20-0C₂₁H₁₄O₅

6-Oxo-6H-benzo[c]chromen-3-yl 4-methoxybenzoate

CAS 307524-28-3C₂₁H₁₄O₅

[1,1'-Binaphthalene]-8-carboxaldehyde, 2,2',7,7'-tetrahydroxy-

CAS 125366-88-3C₂₁H₁₄O₅

3-Benzyl-2-oxo-2H-chromen-4-yl 2-furoate

CAS 404350-88-5C₂₁H₁₄O₅

(Z)-2-(2-Methylbenzylidene)-3-oxo-2,3-dihydrobenzofuran-6-yl furan-2-carboxylate

CAS 622360-91-2C₂₁H₁₄O₅

(Z)-2-(Furan-2-ylmethylene)-3-oxo-2,3-dihydrobenzofuran-6-yl 2-methylbenzoate

CAS 622363-55-7C₂₁H₁₄O₅

(Z)-2-(Furan-2-ylmethylene)-3-oxo-2,3-dihydrobenzofuran-6-yl 4-methylbenzoate

CAS 622362-80-5C₂₁H₁₄O₅

4-Methyl-2-oxo-3-phenyl-2H-chromen-7-yl furan-2-carboxylate

CAS 869080-24-0C₂₁H₁₄O₅

(Z)-2-(3-Methylbenzylidene)-3-oxo-2,3-dihydrobenzofuran-6-yl furan-2-carboxylate

CAS 622360-88-7C₂₁H₁₄O₅

(Z)-2-((5-Methylfuran-2-yl)methylene)-3-oxo-2,3-dihydrobenzofuran-6-yl benzoate

CAS 622361-97-1C₂₁H₁₄O₅

8-Methyl-2-oxo-4-phenyl-2H-chromen-7-yl furan-2-carboxylate

CAS 405916-29-2C₂₁H₁₄O₅

9-(1,3-Benzodioxol-5-yl)-2,3-dihydrocyclopenta[c]furo[3,2-g]chromen-4(1H)-one

CAS 374708-65-3C₂₁H₁₄O₅

Acetic acid, ((4-(2-benzofuranylcarbonyl)-1-naphthalenyl)oxy)-

CAS 68572-39-4C₂₁H₁₄O₅

2-(Benzoyloxy)-5-formylphenyl benzoate

CAS 54917-85-0C₂₁H₁₄O₅

6-Oxo-6H-benzo[c]chromen-3-yl 3-methoxybenzoate

CAS 670244-76-5C₂₁H₁₄O₅

1-Hydroxy-3-(2-oxo-2-phenylethoxy)-9H-xanthen-9-one

CAS 859660-51-8C₂₁H₁₄O₅

Benzoic acid, 4-(6-hydroxy-3-oxo-3H-xanthen-9-yl)-3-methyl-

CAS 876752-68-0C₂₁H₁₄O₅

2'-Formyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid

CAS 2446264-29-3C₂₁H₁₄O₅

Frequently asked questions

Still have a question?

The help centre explains buying, quotes and supplier badges step by step, or you can write to our team.

Help centre Contact us

What is the molar mass of C21H14O5?

The molar mass of C21H14O5 is 346.34 g/mol, calculated from standard atomic weights for 21 carbon atoms, 14 hydrogen atoms and 5 oxygen atoms. The monoisotopic mass is 346.0841 Da.

How many compounds have the formula C21H14O5?

CompoundList lists 27 compounds with the molecular formula C21H14O5, including [(6-Oxo-6H-benzo[c]chromen-3-yl)oxy](phenyl)acetic acid, Wailupemycin G, Fluorescein Methyl ester. 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 C21H14O5?

C21H14O5 has a degree of unsaturation of 15. 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.