Molecular formula

C₂₃H₁₈

23 compounds have this formula on CompoundList.

Molar mass: 294.40g/mol
Monoisotopic mass: 294.1409Da
Atoms: 41
Elements: 2
Rings plus double bonds: 15

The formula C23H18 describes a molecule made of 23 carbon atoms and 18 hydrogen 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 × 2393.84%
12.011 × 23 = 276.253 g/mol
H Hydrogen × 186.16%
1.008 × 18 = 18.144 g/mol

Look up another formula

Compounds with the formula C23H18

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

Showing 1 to 23 of 23 compounds

1,2,4-Triphenyl-1,3-cyclopentadiene

CAS 5074-28-2C₂₃H₁₈

1,2,3-Triphenyl-1,3-cyclopentadiene

CAS 4982-35-8C₂₃H₁₈

Benzo(a)pyrene, 1,3,6-trimethyl-

CAS 16757-92-9C₂₃H₁₈

(2,4-Diphenylcyclopenta-2,4-dien-1-yl)benzene

CAS 6311-25-7C₂₃H₁₈

Ang-steranthrene

CAS 517-85-1C₂₃H₁₈

Naphthalene, 3-methyl-1,2-diphenyl-

CAS 72292-07-0C₂₃H₁₈

Benzene, 1,1',1''-(1,4-cyclopentadiene-1,2,3-triyl)tris-

CAS 108535-09-7C₂₃H₁₈

2-Benzhydrylnaphthalene

CAS 118804-25-4C₂₃H₁₈

4-(4-Phenylcyclopenta-1,3-dien-1-yl)biphenyl

CAS 6942-71-8C₂₃H₁₈

Anthracene, 9-[2-(4-methylphenyl)ethenyl]-

CAS 60949-17-9C₂₃H₁₈

13,13-Dimethyl-13H-indeno[1,2-b]anthracene

CAS 1205546-01-5C₂₃H₁₈

4,5,7-Trimethylbenzo(a)pyrene

CAS 72496-73-2C₂₃H₁₈

1-(Diphenylmethyl)azulene

CAS 1730-38-7C₂₃H₁₈

11-Methyl-1,2,5,6-tetrahydrodicyclopenta[ij,no]tetraphene

CAS 7729-24-0C₂₃H₁₈

5,10[1a(2),2a(2)]-Benzeno-5H-benzo[b]fluorene, 4b,10,10a,11-tetrahydro-

CAS 7281-17-6C₂₃H₁₈

2,5,6,7-Tetrahydro-1H-benzo[de]cyclopenta[qr]naphthacene

CAS 2068-81-7C₂₃H₁₈

1-(Diphenylmethylidene)-5-methyl-1H-indene

CAS 54106-77-3C₂₃H₁₈

4-[(Naphthalen-2-yl)methyl]-1,1'-biphenyl

CAS 102683-23-8C₂₃H₁₈

1,4-Diphenyl-5H-benzo[7]annulene

CAS 61779-48-4C₂₃H₁₈

9-[2-(Prop-1-EN-2-yl)phenyl]anthracene

CAS 60997-99-1C₂₃H₁₈

1-(7-Phenylhepta-1,6-diyn-1-yl)naphthalene

CAS 701974-97-2C₂₃H₁₈

1,1'-[2-(2-Phenylcycloprop-1-en-1-yl)ethene-1,1-diyl]dibenzene

CAS 919341-58-5C₂₃H₁₈

1-[1,1'-Biphenyl]-3-yl-2-methylnaphthalene

CAS 343820-94-0C₂₃H₁₈

Frequently asked questions

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What is the molar mass of C23H18?

The molar mass of C23H18 is 294.40 g/mol, calculated from standard atomic weights for 23 carbon atoms and 18 hydrogen atoms. The monoisotopic mass is 294.1409 Da.

How many compounds have the formula C23H18?

CompoundList lists 23 compounds with the molecular formula C23H18, including 1,2,4-Triphenyl-1,3-cyclopentadiene, 1,2,3-Triphenyl-1,3-cyclopentadiene, Benzo(a)pyrene, 1,3,6-trimethyl-. 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 C23H18?

C23H18 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.