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Molecular formula

C12H18

233 compounds have this formula on CompoundList.

Molar mass
162.28g/mol
Monoisotopic mass
180.2538Da
Atoms
30
Elements
2
Rings plus double bonds
4

The formula C12H18 describes a molecule made of 12 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 × 1288.82%
    12.011 × 12 = 144.132 g/mol
  • H Hydrogen × 1811.18%
    1.008 × 18 = 18.144 g/mol
Look up another formula

Compounds with the formula C12H18

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

Showing 201 to 233 of 233 compounds

2,7-Dimethyl-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoindene chemical structure, C12H18, CAS 92743-98-1
2,7-Dimethyl-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoindene
CAS 92743-98-1C12H18
2,5-Dimethyl-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoindene chemical structure, C12H18, CAS 92744-00-8
2,5-Dimethyl-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoindene
CAS 92744-00-8C12H18
1,1-Dimethyl-3-methylidene-2-(prop-2-en-1-ylidene)cyclohexane chemical structure, C12H18, CAS 99647-15-1
1,1-Dimethyl-3-methylidene-2-(prop-2-en-1-ylidene)cyclohexane
CAS 99647-15-1C12H18
1,6-Dimethyl-1,2,3,4,4a,7-hexahydronaphthalene chemical structure, C12H18, CAS 160246-63-9
1,6-Dimethyl-1,2,3,4,4a,7-hexahydronaphthalene
CAS 160246-63-9C12H18
1-(Buta-1,3-dien-2-yl)-1-(2-methylidenebutyl)cyclopropane chemical structure, C12H18, CAS 51567-06-7
1-(Buta-1,3-dien-2-yl)-1-(2-methylidenebutyl)cyclopropane
CAS 51567-06-7C12H18
4,9-Dimethylidenespiro[2.7]decane chemical structure, C12H18, CAS 64723-35-9
4,9-Dimethylidenespiro[2.7]decane
CAS 64723-35-9C12H18
Cyclododec-1-en-3-yne chemical structure, C12H18, CAS 66633-30-5
Cyclododec-1-en-3-yne
CAS 66633-30-5C12H18
3-Methyl-4-(prop-2-yn-1-yl)octa-1,6-diene chemical structure, C12H18, CAS 61973-16-8
3-Methyl-4-(prop-2-yn-1-yl)octa-1,6-diene
CAS 61973-16-8C12H18
1-Methyl-4-(propan-2-ylidene)bicyclo[3.2.1]oct-2-ene chemical structure, C12H18, CAS 61971-96-8
1-Methyl-4-(propan-2-ylidene)bicyclo[3.2.1]oct-2-ene
CAS 61971-96-8C12H18
3-Methyl-6-(3-methylbut-2-en-1-ylidene)cyclohex-1-ene chemical structure, C12H18, CAS 61971-89-9
3-Methyl-6-(3-methylbut-2-en-1-ylidene)cyclohex-1-ene
CAS 61971-89-9C12H18
1-Methyl-4-(3-methylbut-2-en-1-yl)cyclohexa-1,3-diene chemical structure, C12H18, CAS 61971-87-7
1-Methyl-4-(3-methylbut-2-en-1-yl)cyclohexa-1,3-diene
CAS 61971-87-7C12H18
1-Methyl-6-(propan-2-ylidene)bicyclo[2.2.2]oct-2-ene chemical structure, C12H18, CAS 61971-85-5
1-Methyl-6-(propan-2-ylidene)bicyclo[2.2.2]oct-2-ene
CAS 61971-85-5C12H18
4-(But-3-en-2-yl)-5-methylhepta-1,2,6-triene chemical structure, C12H18, CAS 61786-53-6
4-(But-3-en-2-yl)-5-methylhepta-1,2,6-triene
CAS 61786-53-6C12H18
3,5-Dimethyl-4-(prop-2-yn-1-yl)hepta-1,6-diene chemical structure, C12H18, CAS 61786-52-5
3,5-Dimethyl-4-(prop-2-yn-1-yl)hepta-1,6-diene
CAS 61786-52-5C12H18
1-(But-2-en-1-yl)-2-ethynylcyclohexane chemical structure, C12H18, CAS 61786-37-6
1-(But-2-en-1-yl)-2-ethynylcyclohexane
CAS 61786-37-6C12H18
1-(But-3-en-2-yl)-2-ethynylcyclohexane chemical structure, C12H18, CAS 61786-36-5
1-(But-3-en-2-yl)-2-ethynylcyclohexane
CAS 61786-36-5C12H18
1-(3-Methylpenta-1,4-dien-2-yl)cyclohex-1-ene chemical structure, C12H18, CAS 61786-33-2
1-(3-Methylpenta-1,4-dien-2-yl)cyclohex-1-ene
CAS 61786-33-2C12H18
1-Propadienyl-1-(prop-2-en-1-yl)cyclohexane chemical structure, C12H18, CAS 61786-23-0
1-Propadienyl-1-(prop-2-en-1-yl)cyclohexane
CAS 61786-23-0C12H18
1-(Prop-2-en-1-yl)-1-(prop-2-yn-1-yl)cyclohexane chemical structure, C12H18, CAS 61786-22-9
1-(Prop-2-en-1-yl)-1-(prop-2-yn-1-yl)cyclohexane
CAS 61786-22-9C12H18
5,8,8-Trimethylcyclonona-1,3,6-triene chemical structure, C12H18, CAS 61244-36-8
5,8,8-Trimethylcyclonona-1,3,6-triene
CAS 61244-36-8C12H18
5,9,9-Trimethylcyclonona-1,3,6-triene chemical structure, C12H18, CAS 61244-35-7
5,9,9-Trimethylcyclonona-1,3,6-triene
CAS 61244-35-7C12H18
Bicyclo[4.3.3]dodeca-1,5-diene chemical structure, C12H18, CAS 88348-64-5
Bicyclo[4.3.3]dodeca-1,5-diene
CAS 88348-64-5C12H18
3,3-Dimethyldeca-1,5-diyne chemical structure, C12H18, CAS 917762-98-2
3,3-Dimethyldeca-1,5-diyne
CAS 917762-98-2C12H18
1,2,3,3a,4,5,6,7,8,8b-Decahydro-As-indacene chemical structure, C12H18, CAS 5662-82-8
1,2,3,3a,4,5,6,7,8,8b-Decahydro-As-indacene
CAS 5662-82-8C12H18

Frequently asked questions

What is the molar mass of C12H18?

The molar mass of C12H18 is 162.28 g/mol, calculated from standard atomic weights for 12 carbon atoms and 18 hydrogen atoms. The monoisotopic mass is 180.2538 Da.

How many compounds have the formula C12H18?

CompoundList lists 233 compounds with the molecular formula C12H18, including 2,7-Dimethyl-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoindene, 2,5-Dimethyl-3a,4,5,6,7,7a-hexahydro-1H-4,7-methanoindene, 1,1-Dimethyl-3-methylidene-2-(prop-2-en-1-ylidene)cyclohexane. 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 C12H18?

C12H18 has a degree of unsaturation of 4. 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.