Molecular formula

C₁₈H₁₈O₂S

22 compounds have this formula on CompoundList.

Molar mass: 298.40g/mol
Monoisotopic mass: 298.1028Da
Atoms: 39
Elements: 4
Rings plus double bonds: 10

The formula C18H18O2S describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 2 oxygen atoms and 1 sulfur 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 × 1872.45%
12.011 × 18 = 216.198 g/mol
H Hydrogen × 186.08%
1.008 × 18 = 18.144 g/mol
O Oxygen × 210.72%
15.999 × 2 = 31.998 g/mol
S Sulfur × 110.74%
32.06 × 1 = 32.060 g/mol

Look up another formula

Compounds with the formula C18H18O2S

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

Showing 1 to 22 of 22 compounds

1-(4-Methylthiophenyl)-3-(3,5-dimethyl-4-hydroxyphenyl)prop-2-en-1-one

CAS 923978-99-8C₁₈H₁₈O₂S

3,3'-Thiodipropiophenone

CAS 23080-98-0C₁₈H₁₈O₂S

Bis(4-methylphenacyl) sulfide

CAS 23080-22-0C₁₈H₁₈O₂S

Acetic acid, ((1-(9H-fluoren-2-yl)ethyl)thio)-, methyl ester, (±)-

CAS 72353-30-1C₁₈H₁₈O₂S

4,4-Diphenyl-2-propyl-1,3-oxathiolan-5-one

CAS 31061-70-8C₁₈H₁₈O₂S

Methyl 4-cyclopropyl-3-[(phenylmethyl)thio]benzoate

CAS 2420554-11-4C₁₈H₁₈O₂S

2-Benzhydrylidenethiane 1,1-dioxide

CAS 28937-63-5C₁₈H₁₈O₂S

2(3H)-Furanone, dihydro-4-phenyl-3-(((phenylmethyl)thio)methyl)-

CAS 98162-85-7C₁₈H₁₈O₂S

9-(tert-Butyl)-2,3-dihydrocyclopenta[c]furo[3,2-g]chromene-4(1H)-thione

CAS 951996-55-7C₁₈H₁₈O₂S

7,9,10-Trimethyl-1,2,3,4-tetrahydro-5H-benzo[c]furo[3,2-g]chromene-5-thione

CAS 951939-45-0C₁₈H₁₈O₂S

2,3,4-Trimethyl-8,9,10,11-tetrahydro-7H-benzo[c]furo[2,3-f]chromene-7-thione

CAS 951945-79-2C₁₈H₁₈O₂S

(1aR,7bS)-4-(Benzylthio)-5-methoxy-1,1a,2,7b-tetrahydrocyclopropa[c]chromene

CAS 3068205-70-6C₁₈H₁₈O₂S

(Z)-4-[Dimethyl(oxo)-lambda6-sulfanylidene]-1,3-diphenylbut-2-en-1-one

CAS 32398-73-5C₁₈H₁₈O₂S

Methyl 2,2-diphenylthiolane-3-carboxylate

CAS 88692-00-6C₁₈H₁₈O₂S

Methyl 3-[(1,2,3,4-tetrahydronaphthalen-1-yl)sulfanyl]benzoate

CAS 89050-54-4C₁₈H₁₈O₂S

[2-(Benzenesulfonyl)-4-methylpenta-1,3-dien-1-yl]benzene

CAS 88958-78-5C₁₈H₁₈O₂S

2-Methyl-2-{[(naphthalen-1-yl)methyl]sulfanyl}cyclohexane-1,3-dione

CAS 89030-46-6C₁₈H₁₈O₂S

1,4-Dimethyl-2-propoxy-9H-thioxanthen-9-one

CAS 106221-21-0C₁₈H₁₈O₂S

3,4-Dimethyl-2-propoxy-9H-thioxanthen-9-one

CAS 106221-22-1C₁₈H₁₈O₂S

2-[(4-Cyclopentylphenyl)sulfanyl]benzoic acid

CAS 50900-46-4C₁₈H₁₈O₂S

[6-(Benzenesulfonyl)hex-1-yn-1-yl]benzene

CAS 61772-00-7C₁₈H₁₈O₂S

4-Methyl-5-[(4-methylphenyl)sulfanyl]-4-phenyloxolan-2-one

CAS 823213-94-1C₁₈H₁₈O₂S

Frequently asked questions

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What is the molar mass of C18H18O2S?

The molar mass of C18H18O2S is 298.40 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 2 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 298.1028 Da.

How many compounds have the formula C18H18O2S?

CompoundList lists 22 compounds with the molecular formula C18H18O2S, including 1-(4-Methylthiophenyl)-3-(3,5-dimethyl-4-hydroxyphenyl)prop-2-en-1-one, 3,3'-Thiodipropiophenone, Bis(4-methylphenacyl) sulfide. 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 C18H18O2S?

C18H18O2S has a degree of unsaturation of 10. 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.