Molecular formula

C₁₉H₁₂O

30 compounds have this formula on CompoundList.

Molar mass: 256.30g/mol
Monoisotopic mass: 256.0888Da
Atoms: 32
Elements: 3
Rings plus double bonds: 14

The formula C19H12O describes a molecule made of 19 carbon atoms, 12 hydrogen atoms and 1 oxygen atom. 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 × 1989.04%
12.011 × 19 = 228.209 g/mol
H Hydrogen × 124.72%
1.008 × 12 = 12.096 g/mol
O Oxygen × 16.24%
15.999 × 1 = 15.999 g/mol

Look up another formula

Compounds with the formula C19H12O

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

Showing 1 to 30 of 30 compounds

2-Phenyl-9H-fluoren-9-one

CAS 3096-49-9C₁₉H₁₂O

4-Phenylfluoren-9-one

CAS 4269-14-1C₁₉H₁₂O

9-Phenylphenalen-1-one

CAS 56252-08-5C₁₉H₁₂O

6H-Cyclopenta(def)chrysen-6-ol

CAS 143924-52-1C₁₉H₁₂O

Benz(a)anthracene-7-carboxaldehyde

CAS 7505-62-6C₁₉H₁₂O

Triphenylene-2-carbaldehyde

CAS 96404-79-4C₁₉H₁₂O

9H-Tribenzo[a,c,e][7]annulen-9-one

CAS 68089-73-6C₁₉H₁₂O

5-Naphthacenecarboxaldehyde

CAS 14214-57-4C₁₉H₁₂O

3-Phenyl-1H-phenalen-1-one

CAS 16736-87-1C₁₉H₁₂O

2-Propyn-1-one, 1-(1-naphthalenyl)-3-phenyl-

CAS 16736-86-0C₁₉H₁₂O

Benzo[c]phenanthrene-5-carbaldehyde

CAS 4466-76-6C₁₉H₁₂O

2-Benzylidene-1(2H)-acenaphthylenone

CAS 963-63-3C₁₉H₁₂O

1-Methylbenz(a)anthracene 5,6-oxide

CAS 146683-80-9C₁₉H₁₂O

Biphenylen-2-yl(phenyl)methanone

CAS 24926-91-8C₁₉H₁₂O

Chrysal

CAS 1848944-84-2C₁₉H₁₂O

Benz(a)oxireno(c)anthracene, 11-methyl-

CAS 100427-73-4C₁₉H₁₂O

Benz(a)anthracene-12-carboxaldehyde

CAS 3558-03-0C₁₉H₁₂O

Tetracal

CAS 173471-01-7C₁₉H₁₂O

1(2H)-Acenaphthylenone, 2-(phenylmethylene)-, (E)-

CAS 70312-09-3C₁₉H₁₂O

3-Phenyl-9H-fluoren-9-one

CAS 19063-39-9C₁₉H₁₂O

Pyrenylacrolein

CAS 203438-03-3C₁₉H₁₂O

2-(Naphthalen-1-ylethynyl)benzaldehyde

CAS 1180487-37-9C₁₉H₁₂O

Tetracene-2-carbaldehyde

CAS 33942-73-3C₁₉H₁₂O

3-(Naphthalen-1-yl)-1-phenylprop-2-yn-1-one

CAS 160254-73-9C₁₉H₁₂O

Frequently asked questions

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What is the molar mass of C19H12O?

The molar mass of C19H12O is 256.30 g/mol, calculated from standard atomic weights for 19 carbon atoms, 12 hydrogen atoms and 1 oxygen atom. The monoisotopic mass is 256.0888 Da.

How many compounds have the formula C19H12O?

CompoundList lists 30 compounds with the molecular formula C19H12O, including 2-Phenyl-9H-fluoren-9-one, 4-Phenylfluoren-9-one, 9-Phenylphenalen-1-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 C19H12O?

C19H12O has a degree of unsaturation of 14. 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.