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Molecular formula

C20H21NO

141 compounds have this formula on CompoundList.

Molar mass
291.39g/mol
Monoisotopic mass
297.2000Da
Atoms
43
Elements
4
Rings plus double bonds
11

The formula C20H21NO describes a molecule made of 20 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom 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 × 2082.44%
    12.011 × 20 = 240.220 g/mol
  • H Hydrogen × 217.26%
    1.008 × 21 = 21.168 g/mol
  • N Nitrogen × 14.81%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 15.49%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C20H21NO

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

Showing 101 to 141 of 141 compounds

N-[(2-Phenylcyclohexen-1-yl)methyl]benzamide chemical structure, C20H21NO, CAS 89482-38-2
N-[(2-Phenylcyclohexen-1-yl)methyl]benzamide
CAS 89482-38-2C20H21NO
4-{2-[4-(Pentyloxy)phenyl]ethenyl}benzonitrile chemical structure, C20H21NO, CAS 62736-47-4
4-{2-[4-(Pentyloxy)phenyl]ethenyl}benzonitrile
CAS 62736-47-4C20H21NO
N-Phenyl-2-(4-phenylcyclohexen-1-yl)acetamide chemical structure, C20H21NO, CAS 919769-10-1
N-Phenyl-2-(4-phenylcyclohexen-1-yl)acetamide
CAS 919769-10-1C20H21NO
2-Hydroxycyclobenzaprine chemical structure, C20H21NO, CAS 69580-10-5
2-Hydroxycyclobenzaprine
CAS 69580-10-5C20H21NO
2,3,4,9b-Tetrahydro-5-(4-methoxyphenyl)-2-methyl-1H-indeno[1,2-c]pyridine chemical structure, C20H21NO, CAS 801982-59-2
2,3,4,9b-Tetrahydro-5-(4-methoxyphenyl)-2-methyl-1H-indeno[1,2-c]pyridine
CAS 801982-59-2C20H21NO
3-Methyl-N-(4-methylphenyl)-2-phenyl-2-cyclopentene-1-carboxamide chemical structure, C20H21NO, CAS 4344-56-3
3-Methyl-N-(4-methylphenyl)-2-phenyl-2-cyclopentene-1-carboxamide
CAS 4344-56-3C20H21NO
(4S,7R,7aS)-2,3-Diphenyloctahydro-4,7-methano-1,2-benzoxazole chemical structure, C20H21NO, CAS 20520-99-4
(4S,7R,7aS)-2,3-Diphenyloctahydro-4,7-methano-1,2-benzoxazole
CAS 20520-99-4C20H21NO
1-Benzyl-2-[(4-methoxyphenyl)ethynyl]pyrrolidine chemical structure, C20H21NO, CAS 1133437-56-5
1-Benzyl-2-[(4-methoxyphenyl)ethynyl]pyrrolidine
CAS 1133437-56-5C20H21NO
3-Benzyl-5-methyl-7-phenyl-3-azabicyclo[3.2.0]heptan-2-one chemical structure, C20H21NO, CAS 2138376-40-4
3-Benzyl-5-methyl-7-phenyl-3-azabicyclo[3.2.0]heptan-2-one
CAS 2138376-40-4C20H21NO
3-Benzyl-6-methyl-7-phenyl-3-azabicyclo[3.2.0]heptan-2-one chemical structure, C20H21NO, CAS 2137574-05-9
3-Benzyl-6-methyl-7-phenyl-3-azabicyclo[3.2.0]heptan-2-one
CAS 2137574-05-9C20H21NO
2-[4-(1,1-Dimethylethyl)phenyl]-3-methyl-4(1H)-quinolinone chemical structure, C20H21NO, CAS 200406-05-9
2-[4-(1,1-Dimethylethyl)phenyl]-3-methyl-4(1H)-quinolinone
CAS 200406-05-9C20H21NO
(Z)-1,3-Diphenyl-3-piperidin-1-ylprop-2-en-1-one chemical structure, C20H21NO, CAS 7477-68-1
(Z)-1,3-Diphenyl-3-piperidin-1-ylprop-2-en-1-one
CAS 7477-68-1C20H21NO
4-Formyl-1-(2,3,5,6-tetramethylbenzyl)-1H-indole chemical structure, C20H21NO, CAS 490038-36-3
4-Formyl-1-(2,3,5,6-tetramethylbenzyl)-1H-indole
CAS 490038-36-3C20H21NO
(E)-N-(2-(2-(4-Methoxyphenyl)ethynyl)benzylidene)-2-methylpropan-2-amine chemical structure, C20H21NO, CAS 391611-15-7
(E)-N-(2-(2-(4-Methoxyphenyl)ethynyl)benzylidene)-2-methylpropan-2-amine
CAS 391611-15-7C20H21NO
2-(Benzylamino)-4'-methyl-5,6-dihydro[1,1'-biphenyl]-3(4H)-one chemical structure, C20H21NO, CAS 62297-23-8
2-(Benzylamino)-4'-methyl-5,6-dihydro[1,1'-biphenyl]-3(4H)-one
CAS 62297-23-8C20H21NO
8-tert-Butyl-N-hydroxy-N-phenylnaphthalen-2-amine chemical structure, C20H21NO, CAS 88936-54-3
8-tert-Butyl-N-hydroxy-N-phenylnaphthalen-2-amine
CAS 88936-54-3C20H21NO
1-[4-[1,2,3,6-Tetrahydro-1-(phenylmethyl)-4-pyridinyl]phenyl]ethanone chemical structure, C20H21NO, CAS 32245-93-5
1-[4-[1,2,3,6-Tetrahydro-1-(phenylmethyl)-4-pyridinyl]phenyl]ethanone
CAS 32245-93-5C20H21NO
3-Hydroxy cyclobenzaprine-d6 chemical structure, C20H21NO, CAS 1217246-95-1
3-Hydroxy cyclobenzaprine-d6
CAS 1217246-95-1C20H21NO
1-(1,1-Diphenylprop-1-en-2-yl)piperidin-2-one chemical structure, C20H21NO, CAS 88953-50-8
1-(1,1-Diphenylprop-1-en-2-yl)piperidin-2-one
CAS 88953-50-8C20H21NO
6-Butyl-2-(4-methoxyphenyl)quinoline chemical structure, C20H21NO, CAS 112328-05-9
6-Butyl-2-(4-methoxyphenyl)quinoline
CAS 112328-05-9C20H21NO
8-[([1,1'-Biphenyl]-4-yl)methyl]-8-azabicyclo[3.2.1]octan-3-one chemical structure, C20H21NO, CAS 112922-78-8
8-[([1,1'-Biphenyl]-4-yl)methyl]-8-azabicyclo[3.2.1]octan-3-one
CAS 112922-78-8C20H21NO
2,4-Diphenyl-4a,5,6,7,8,8a-hexahydro-4H-1,3-benzoxazine chemical structure, C20H21NO, CAS 61570-94-3
2,4-Diphenyl-4a,5,6,7,8,8a-hexahydro-4H-1,3-benzoxazine
CAS 61570-94-3C20H21NO
1-[(3,4-Dimethylphenyl)methyl]-3,4-dimethylquinolin-2(1H)-one chemical structure, C20H21NO, CAS 61304-92-5
1-[(3,4-Dimethylphenyl)methyl]-3,4-dimethylquinolin-2(1H)-one
CAS 61304-92-5C20H21NO
4-Methyl-1-{[3-(propan-2-yl)phenyl]methyl}quinolin-2(1H)-one chemical structure, C20H21NO, CAS 61297-77-6
4-Methyl-1-{[3-(propan-2-yl)phenyl]methyl}quinolin-2(1H)-one
CAS 61297-77-6C20H21NO

Frequently asked questions

What is the molar mass of C20H21NO?

The molar mass of C20H21NO is 291.39 g/mol, calculated from standard atomic weights for 20 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 1 oxygen atom. The monoisotopic mass is 297.2000 Da.

How many compounds have the formula C20H21NO?

CompoundList lists 141 compounds with the molecular formula C20H21NO, including N-[(2-Phenylcyclohexen-1-yl)methyl]benzamide, 4-{2-[4-(Pentyloxy)phenyl]ethenyl}benzonitrile, N-Phenyl-2-(4-phenylcyclohexen-1-yl)acetamide. 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 C20H21NO?

C20H21NO has a degree of unsaturation of 11. 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.