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Molecular formula

C21H30O

29 compounds have this formula on CompoundList.

Molar mass
298.47g/mol
Monoisotopic mass
298.2297Da
Atoms
52
Elements
3
Rings plus double bonds
7

The formula C21H30O describes a molecule made of 21 carbon atoms, 30 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 × 2184.51%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 3010.13%
    1.008 × 30 = 30.240 g/mol
  • O Oxygen × 15.36%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C21H30O

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

Showing 1 to 29 of 29 compounds

Cardanol chemical structure, C21H30O, CAS 37330-39-5
Cardanol
CAS 37330-39-5C21H30O
2-((1R,6R)-3-Methyl-6-(1-methylethenyl)-2-cyclohexen-1-yl)-5-pentylphenol chemical structure, C21H30O, CAS 1403937-86-9
2-((1R,6R)-3-Methyl-6-(1-methylethenyl)-2-cyclohexen-1-yl)-5-pentylphenol
CAS 1403937-86-9C21H30O
1-Desoxy-delta9-tetrahydrocannabinol chemical structure, C21H30O, CAS 76207-27-7
1-Desoxy-delta9-tetrahydrocannabinol
CAS 76207-27-7C21H30O
15-Methyl retinone chemical structure, C21H30O, CAS 67517-37-7
15-Methyl retinone
CAS 67517-37-7C21H30O
Phenol, 3-(8,11,14-pentadecatrienyl)- chemical structure, C21H30O, CAS 63502-71-6
Phenol, 3-(8,11,14-pentadecatrienyl)-
CAS 63502-71-6C21H30O
3-Methyl-19-nor-17alpha-pregna-1,3,5(10)-trien-17-ol chemical structure, C21H30O, CAS 2626-11-1
3-Methyl-19-nor-17alpha-pregna-1,3,5(10)-trien-17-ol
CAS 2626-11-1C21H30O
(8R,9S,10S,13S,14S,17S)-3,13-Dimethyl-10-vinyl-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-ol chemical structure, C21H30O, CAS 871840-07-2
(8R,9S,10S,13S,14S,17S)-3,13-Dimethyl-10-vinyl-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-ol
CAS 871840-07-2C21H30O
Levonorgestrel EP impurity D chemical structure, C21H30O, CAS 32419-58-2
Levonorgestrel EP impurity D
CAS 32419-58-2C21H30O
7alpha-Methyl-17alpha-19-norpregn-4-en-20-yn-17-ol chemical structure, C21H30O, CAS 3704-15-2
7alpha-Methyl-17alpha-19-norpregn-4-en-20-yn-17-ol
CAS 3704-15-2C21H30O
2,4,5-Tricyclopentylphenol chemical structure, C21H30O, CAS 60834-64-2
2,4,5-Tricyclopentylphenol
CAS 60834-64-2C21H30O
5-alpha-Pregn-2-en-20-yn-17-beta-ol chemical structure, C21H30O, CAS 3642-95-3
5-alpha-Pregn-2-en-20-yn-17-beta-ol
CAS 3642-95-3C21H30O
Pregna-3,5-dien-20-one chemical structure, C21H30O, CAS 1093-87-4
Pregna-3,5-dien-20-one
CAS 1093-87-4C21H30O
3,3,5,5-Tetramethyl-8-(3-methylbutyl)-6,7-dihydro-2H-s-indacen-1-one chemical structure, C21H30O, CAS 55712-64-6
3,3,5,5-Tetramethyl-8-(3-methylbutyl)-6,7-dihydro-2H-s-indacen-1-one
CAS 55712-64-6C21H30O
(6aR,10aR)-3-(1,1-Dimethylpropyl)-6a,7,10,10a-tetrahydro-6,6,9-trimethyl-6H-dibenzo(b,d)pyran chemical structure, C21H30O, CAS 259869-54-0
(6aR,10aR)-3-(1,1-Dimethylpropyl)-6a,7,10,10a-tetrahydro-6,6,9-trimethyl-6H-dibenzo(b,d)pyran
CAS 259869-54-0C21H30O
Phenanthrene, 1,2,3,4,4a,10a-hexahydro-7-methoxy-1,1,4a-trimethyl-8-(1-methylethyl)- chemical structure, C21H30O, CAS 54833-49-7
Phenanthrene, 1,2,3,4,4a,10a-hexahydro-7-methoxy-1,1,4a-trimethyl-8-(1-methylethyl)-
CAS 54833-49-7C21H30O
7-Decyl-2-methylnaphthalen-1-ol chemical structure, C21H30O, CAS 95576-38-8
7-Decyl-2-methylnaphthalen-1-ol
CAS 95576-38-8C21H30O
2,6-Di-tert-butyl-4-[(2-methylcyclopenta-1,3-dien-1-yl)methyl]phenol chemical structure, C21H30O, CAS 93470-50-9
2,6-Di-tert-butyl-4-[(2-methylcyclopenta-1,3-dien-1-yl)methyl]phenol
CAS 93470-50-9C21H30O
2-Decyl-6-methoxynaphthalene chemical structure, C21H30O, CAS 1310197-70-6
2-Decyl-6-methoxynaphthalene
CAS 1310197-70-6C21H30O
3-((R)-6-Hexyl-5,6,7,8-tetrahydronaphthalen-2-yl)cyclopentanone chemical structure, C21H30O, CAS 1622180-64-6
3-((R)-6-Hexyl-5,6,7,8-tetrahydronaphthalen-2-yl)cyclopentanone
CAS 1622180-64-6C21H30O
(2R,4aS,4bS,10bS,12aR)-1,2,3,4,4a,4b,5,6,10b,11,12,12a-Dodecahydro-4a,7,8-trimethyl-2-chrysenol chemical structure, C21H30O, CAS 2601-22-1
(2R,4aS,4bS,10bS,12aR)-1,2,3,4,4a,4b,5,6,10b,11,12,12a-Dodecahydro-4a,7,8-trimethyl-2-chrysenol
CAS 2601-22-1C21H30O
Benzene, 1-[4a(2)-(methoxymethylene)[1,1a(2)-bicyclohexyl]-4-yl]-4-methyl-, trans- chemical structure, C21H30O, CAS 156140-02-2
Benzene, 1-[4a(2)-(methoxymethylene)[1,1a(2)-bicyclohexyl]-4-yl]-4-methyl-, trans-
CAS 156140-02-2C21H30O
1,7-Di(bicyclo[2.2.1]hept-5-en-2-yl)heptan-4-one chemical structure, C21H30O, CAS 60469-45-6
1,7-Di(bicyclo[2.2.1]hept-5-en-2-yl)heptan-4-one
CAS 60469-45-6C21H30O
Androsta-4,16-dien-3-one, 16-ethyl- chemical structure, C21H30O, CAS 63015-12-3
Androsta-4,16-dien-3-one, 16-ethyl-
CAS 63015-12-3C21H30O
(3S,4aR,8aR)-3-(Benzyloxy)-4,4,7,8a-tetramethyl-1,2,3,4,4a,5,6,8a-octahydronaphthalene chemical structure, C21H30O, CAS 157519-04-5
(3S,4aR,8aR)-3-(Benzyloxy)-4,4,7,8a-tetramethyl-1,2,3,4,4a,5,6,8a-octahydronaphthalene
CAS 157519-04-5C21H30O

Frequently asked questions

What is the molar mass of C21H30O?

The molar mass of C21H30O is 298.47 g/mol, calculated from standard atomic weights for 21 carbon atoms, 30 hydrogen atoms and 1 oxygen atom. The monoisotopic mass is 298.2297 Da.

How many compounds have the formula C21H30O?

CompoundList lists 29 compounds with the molecular formula C21H30O, including Cardanol, 2-((1R,6R)-3-Methyl-6-(1-methylethenyl)-2-cyclohexen-1-yl)-5-pentylphenol, 1-Desoxy-delta9-tetrahydrocannabinol. 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 C21H30O?

C21H30O has a degree of unsaturation of 7. 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.