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Molecular formula

C21H25NO

135 compounds have this formula on CompoundList.

Molar mass
307.44g/mol
Monoisotopic mass
307.1936Da
Atoms
48
Elements
4
Rings plus double bonds
10

The formula C21H25NO describes a molecule made of 21 carbon atoms, 25 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 × 2182.04%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 258.20%
    1.008 × 25 = 25.200 g/mol
  • N Nitrogen × 14.56%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 15.20%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C21H25NO

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

Showing 101 to 135 of 135 compounds

4-[[4-(Octyloxy)phenyl]ethynyl]pyridine chemical structure, C21H25NO, CAS 501909-66-6
4-[[4-(Octyloxy)phenyl]ethynyl]pyridine
CAS 501909-66-6C21H25NO
1-Butyl-2-methoxy-3-propylphenanthridine chemical structure, C21H25NO, CAS 627529-24-2
1-Butyl-2-methoxy-3-propylphenanthridine
CAS 627529-24-2C21H25NO
9-Octyl-9H-carbazole-3-carbaldehyde chemical structure, C21H25NO, CAS 67707-10-2
9-Octyl-9H-carbazole-3-carbaldehyde
CAS 67707-10-2C21H25NO
rel-1-[(1R,2S,3S,5S)-8-Methyl-3-(2-naphthalenyl)-8-azabicyclo[3.2.1]oct-2-yl]-1-propanone chemical structure, C21H25NO, CAS 155930-84-0
rel-1-[(1R,2S,3S,5S)-8-Methyl-3-(2-naphthalenyl)-8-azabicyclo[3.2.1]oct-2-yl]-1-propanone
CAS 155930-84-0C21H25NO
1,1-Diphenyl-4-(1-piperidinyl)-2-butanone chemical structure, C21H25NO, CAS 103281-49-8
1,1-Diphenyl-4-(1-piperidinyl)-2-butanone
CAS 103281-49-8C21H25NO
N-[Cyclopentyl(phenyl)methyl]-3-phenylpropanamide chemical structure, C21H25NO, CAS 692774-42-8
N-[Cyclopentyl(phenyl)methyl]-3-phenylpropanamide
CAS 692774-42-8C21H25NO
Spiro[piperidine-3,9'-[9H]xanthene], 1-butyl- chemical structure, C21H25NO, CAS 648928-57-8
Spiro[piperidine-3,9'-[9H]xanthene], 1-butyl-
CAS 648928-57-8C21H25NO
Acetamide, N-(1,2-dimethyl-4,4-diphenyl-3-butenyl)-N-methyl- chemical structure, C21H25NO, CAS 61448-49-5
Acetamide, N-(1,2-dimethyl-4,4-diphenyl-3-butenyl)-N-methyl-
CAS 61448-49-5C21H25NO
1-(1-Benzylpiperidin-4-yl)-3-phenylpropan-2-one chemical structure, C21H25NO, CAS 135634-87-6
1-(1-Benzylpiperidin-4-yl)-3-phenylpropan-2-one
CAS 135634-87-6C21H25NO
1-(6-Ethyl-4,4-dimethyl-1-phenyl-1,2,3,4-tetrahydro-quinolin-7-yl)-ethanone chemical structure, C21H25NO, CAS 1254928-75-0
1-(6-Ethyl-4,4-dimethyl-1-phenyl-1,2,3,4-tetrahydro-quinolin-7-yl)-ethanone
CAS 1254928-75-0C21H25NO
1-(1-Benzyl-4,4,6-trimethyl-1,2,3,4-tetrahydro-quinolin-7-yl)-ethanone chemical structure, C21H25NO, CAS 1254928-85-2
1-(1-Benzyl-4,4,6-trimethyl-1,2,3,4-tetrahydro-quinolin-7-yl)-ethanone
CAS 1254928-85-2C21H25NO
1-(5-(Dec-1-yn-1-yl)quinolin-8-yl)ethan-1-one chemical structure, C21H25NO, CAS 1402908-92-2
1-(5-(Dec-1-yn-1-yl)quinolin-8-yl)ethan-1-one
CAS 1402908-92-2C21H25NO
Cyclohexyl[4'-(dimethylamino)[1,1'-biphenyl]-2-yl]methanone chemical structure, C21H25NO, CAS 922529-81-5
Cyclohexyl[4'-(dimethylamino)[1,1'-biphenyl]-2-yl]methanone
CAS 922529-81-5C21H25NO
2-Benzofuranmethanamine, I+/--(2,5-dimethylphenyl)-3,5-diethyl- chemical structure, C21H25NO, CAS 1517917-92-8
2-Benzofuranmethanamine, I+/--(2,5-dimethylphenyl)-3,5-diethyl-
CAS 1517917-92-8C21H25NO
4-((4-Cyclohexylbenzyl)methylamino)benzaldehyde chemical structure, C21H25NO, CAS 1186634-41-2
4-((4-Cyclohexylbenzyl)methylamino)benzaldehyde
CAS 1186634-41-2C21H25NO
4-Benzyl-6-(benzyloxy)-4-azaspiro[2.5]octane chemical structure, C21H25NO, CAS 2155853-22-6
4-Benzyl-6-(benzyloxy)-4-azaspiro[2.5]octane
CAS 2155853-22-6C21H25NO
2,3,4,4a,5,9b-Hexahydro-2,7-dimethyl-5-(3-methylphenyl)-1H-indeno[1,2-c]pyridin-5-ol chemical structure, C21H25NO, CAS 30188-15-9
2,3,4,4a,5,9b-Hexahydro-2,7-dimethyl-5-(3-methylphenyl)-1H-indeno[1,2-c]pyridin-5-ol
CAS 30188-15-9C21H25NO
1,2,3,4,5,6,7,8-Octahydro-I+/--methyl-I+/--phenyl-4-acridinemethanol chemical structure, C21H25NO, CAS 30425-73-1
1,2,3,4,5,6,7,8-Octahydro-I+/--methyl-I+/--phenyl-4-acridinemethanol
CAS 30425-73-1C21H25NO
1-(Dibenzylamino)cyclohexane-1-carbaldehyde chemical structure, C21H25NO, CAS 1797418-67-7
1-(Dibenzylamino)cyclohexane-1-carbaldehyde
CAS 1797418-67-7C21H25NO
3-Heptyl-3-phenyl-1,3-dihydro-2H-indol-2-one chemical structure, C21H25NO, CAS 62524-12-3
3-Heptyl-3-phenyl-1,3-dihydro-2H-indol-2-one
CAS 62524-12-3C21H25NO
1,2,3,6-Tetrahydro-4-[2-(1-methylethoxy)phenyl]-1-(phenylmethyl)pyridine chemical structure, C21H25NO, CAS 174822-98-1
1,2,3,6-Tetrahydro-4-[2-(1-methylethoxy)phenyl]-1-(phenylmethyl)pyridine
CAS 174822-98-1C21H25NO
1-(4-(4-Benzylpiperidin-1-yl)phenyl)propan-1-one chemical structure, C21H25NO, CAS 1175906-34-9
1-(4-(4-Benzylpiperidin-1-yl)phenyl)propan-1-one
CAS 1175906-34-9C21H25NO
1-[2-(3,3-Diphenyloxiran-2-yl)ethyl]piperidine chemical structure, C21H25NO, CAS 185138-84-5
1-[2-(3,3-Diphenyloxiran-2-yl)ethyl]piperidine
CAS 185138-84-5C21H25NO
1-[1-([1,1'-Biphenyl]-4-yl)pentyl]pyrrolidin-2-one chemical structure, C21H25NO, CAS 61454-87-3
1-[1-([1,1'-Biphenyl]-4-yl)pentyl]pyrrolidin-2-one
CAS 61454-87-3C21H25NO

Frequently asked questions

What is the molar mass of C21H25NO?

The molar mass of C21H25NO is 307.44 g/mol, calculated from standard atomic weights for 21 carbon atoms, 25 hydrogen atoms, 1 nitrogen atom and 1 oxygen atom. The monoisotopic mass is 307.1936 Da.

How many compounds have the formula C21H25NO?

CompoundList lists 135 compounds with the molecular formula C21H25NO, including 4-[[4-(Octyloxy)phenyl]ethynyl]pyridine, 1-Butyl-2-methoxy-3-propylphenanthridine, 9-Octyl-9H-carbazole-3-carbaldehyde. 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 C21H25NO?

C21H25NO 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.