Molecular formula
C18H21NO
429 compounds have this formula on CompoundList.
- Molar mass
- 267.37g/mol
- Monoisotopic mass
- 272.1937Da
- Atoms
- 41
- Elements
- 4
- Rings plus double bonds
- 9
The formula C18H21NO describes a molecule made of 18 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 × 1880.86%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 217.92%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 15.24%14.007 × 1 = 14.007 g/mol
- O Oxygen × 15.98%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C18H21NO
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 201 to 300 of 429 compounds
4-Benzyl-5-phenyl-1,4-oxazepane
CAS 1246455-97-9C18H21NO
![1-[3-(Benzyloxy)propyl]indoline chemical structure, C18H21NO, CAS 459868-64-5](/s/ZTASKJIGBQBSQD-UHFFFAOYSA-N.svg)
1-[3-(Benzyloxy)propyl]indoline
CAS 459868-64-5C18H21NO
N,N-Dibenzyl-3-methyl-oxetan-3-amine
CAS 2940943-28-0C18H21NO
2-Benzyl-N,N-diethylbenzamide
CAS 162334-26-1C18H21NO
(1-Benzyl-2-phenylpyrrolidin-2-yl)methanol
CAS 1864061-79-9C18H21NO
N,2,4,6-Tetramethyl-N-(phenylmethyl)benzamide
CAS 3132-95-4C18H21NO
![N-{4'-tert-Butyl-[1,1'-biphenyl]-2-yl}acetamide chemical structure, C18H21NO, CAS 869631-30-1](/s/ROICZPMKCFCEEL-UHFFFAOYSA-N.svg)
N-{4'-tert-Butyl-[1,1'-biphenyl]-2-yl}acetamide
CAS 869631-30-1C18H21NO
N,N-Dibenzyl-1-(oxetan-3-yl)methanamine
CAS 1486572-34-2C18H21NO
1-(4-Methoxyphenyl)-3-phenylpiperidine
CAS 1888421-33-7C18H21NO
(1-Benzhydryl-2-methylazetidin-3-yl)methanol
CAS 2231673-88-2C18H21NO
1-(4-Aminophenyl)-2-(4-butyrylphenyl)ethane
CAS 17438-50-5C18H21NO
N-(7-Ethyl-1,2,3,4-tetrahydrophenanthren-9-yl)acetamide
CAS 5472-21-9C18H21NO
![N-{4-[2-(4-Methylphenyl)propan-2-yl]phenyl}ethanimidic acid chemical structure, C18H21NO, CAS 6271-71-2](/s/GYGNQJMYEDNPTQ-UHFFFAOYSA-N.svg)
N-{4-[2-(4-Methylphenyl)propan-2-yl]phenyl}ethanimidic acid
CAS 6271-71-2C18H21NO
4-tert-Butyl-2-methyl-6-(phenyliminomethyl)phenol
CAS 6296-81-7C18H21NO
N-(2,6-Dimethylphenyl)-4-propan-2-ylbenzamide
CAS 433972-79-3C18H21NO
N-(3,5-Dimethylphenyl)-4-phenylbutanamide
CAS 430458-24-5C18H21NO
N-(2-tert-Butylphenyl)-2-methylbenzamide
CAS 692281-90-6C18H21NO
2,5-Dimethyl-N-(4-propan-2-ylphenyl)benzamide
CAS 701222-59-5C18H21NO
2,5-Dimethyl-N-(2,4,6-trimethylphenyl)benzamide
CAS 701246-10-8C18H21NO
![(2-Phenylethyl)({[2-(prop-2-en-1-yloxy)phenyl]methyl})amine chemical structure, C18H21NO, CAS 861227-27-2](/s/MZYDHUJKZCUDLM-UHFFFAOYSA-N.svg)
(2-Phenylethyl)({[2-(prop-2-en-1-yloxy)phenyl]methyl})amine
CAS 861227-27-2C18H21NO
3-Phenyl-N-(3-phenylpropyl)propanamide
CAS 536755-27-8C18H21NO
2,6,6-Trimethyl-1-(3-methylphenyl)-5,7-dihydroindol-4-one
CAS 7065-54-5C18H21NO
2-Ethyl-N-(2-phenylphenyl)butanamide
CAS 127563-51-3C18H21NO
N-(2,3-Dimethylphenyl)-2-methyl-2-phenylpropanamide
CAS 1097445-96-9C18H21NO
- N-(1-Ethylbutyl)-2-dibenzofuranamine350017-05-9C18H21NO
- 1-Benzhydrylpiperidin-4-ol101768-26-7C18H21NO
- 4-(4-Biphenyl)-4-hydroxy-1-methylpiperidine190834-95-8C18H21NO
- (2S,3S)-1-Benzyl-2-phenylpiperidin-3-ol250589-64-1C18H21NO
- 9-(Benzofuran-2-yl)-3-azaspiro[5.5]undec-8-ene918650-77-8C18H21NO
- 4-Methyl-N,4-diphenylpentanamide4408-56-4C18H21NO
- N-t-Butyl-4'-methylbiphenyl-2-carboxamide144690-19-7C18H21NO
- 3-(4-Methylphenyl)-N-(2-phenylethyl)propanamide940720-41-2C18H21NO
- 4-[([1,1'-Biphenyl]-2-yloxy)methyl]piperidine883514-41-8C18H21NO
- 3-[1-[(5,6,7,8-Tetrahydro-1-naphthalenyl)amino]ethyl]phenol1019516-05-2C18H21NO
- 1-(4-Methoxyphenyl)-1-(5,6,7,8-tetrahydronaphthalen-2-yl)methanamine1020922-45-5C18H21NO
- 2-{[([1,1'-Biphenyl]-2-yl)oxy]methyl}piperidine883514-27-0C18H21NO
- 3-(4-Benzylphenoxy)piperidine946681-24-9C18H21NO
- (4-Hexylphenyl)(pyridin-3-yl)methanone61780-11-8C18H21NO
- (3R,4R)-4-Phenyl-1-(phenylmethyl)-3-piperidinol474925-46-7C18H21NO
- N-(4-Pentylphenyl)benzamide856355-79-8C18H21NO
- 6-[4-(2-Methoxyethyl)phenyl]-1,2,3,4-tetrahydroquinoline1494421-87-2C18H21NO
- 3-(2-Benzofuranyl)-N,N-dimethylbicyclo[2.2.1]hept-2-ene-2-methanamine785041-23-8C18H21NO
- 2,4-Bis(phenylmethyl)morpholine136423-20-6C18H21NO
- N,N-Dimethyl-2-[4-(1-phenylethenyl)phenoxy]ethan-1-amine51360-32-8C18H21NO
- N-[2-(4-Methylphenyl)ethyl]-3-phenylpropanamide2199008-33-6C18H21NO
- (1-(Dibenzylamino)cyclopropyl)methanol308266-22-0C18H21NO
- 3-[1-(Benzylamino)-2-methylpropyl]benzaldehyde2319581-33-2C18H21NO
- Benzamide, N-(3-methylphenyl)-4-butyl-959031-92-6C18H21NO
- 4-Methyl-N-[[2-(1-methylethyl)phenyl]methyl]benzamide349091-13-0C18H21NO
- Benzeneacetamide, N-[(1S)-1-methyl-3-phenylpropyl]-403617-14-1C18H21NO
- N-(3,5-Dimethylphenyl)-2-methyl-2-phenylpropanamide1097435-94-3C18H21NO
- Benzenemethanamine, N-[4-(phenylmethoxy)butylidene]-137710-71-5C18H21NO
- 4-[2-(4-Methylphenoxy)phenyl]piperidine773853-28-4C18H21NO
- N-(4-Isopropylphenyl)-2-(3-methylphenyl)acetamide923554-96-5C18H21NO
- 2-(Benzylamino)-2-phenylcyclopentanol887575-59-9C18H21NO
- 2-(Benzylamino)-1-phenylcyclopentanol887575-65-7C18H21NO
- 1-Pyrrolidineethanol, 2,5-diphenyl-, (2S,5S)-650607-90-2C18H21NO
- 4-(2-Methoxybenzyl)-2-methyl-1,2,3,4-tetrahydroisoquinoline90136-96-2C18H21NO
- 4-Ethoxy-1,2,3,4-tetrahydro-2-(phenylmethyl)isoquinoline106889-85-4C18H21NO
- 3-Methyl-1-(4-methylphenoxy)-2,3,4,5-tetrahydro-1H-3-benzazepine89739-64-0C18H21NO
- (2R)-2-Phenyl-2-[(2S)-2-phenylpyrrolidin-1-yl]ethan-1-ol132959-45-6C18H21NO
- 2-(3-Methylphenyl)-N-(2-phenylpropan-2-yl)acetamide77245-87-5C18H21NO
- 4-[(2-Phenoxyphenyl)methyl]piperidine2229506-94-7C18H21NO
- 3-[(2-Phenoxyphenyl)methyl]piperidine1337295-70-1C18H21NO
- 2-(2-Cyclohexylphenoxy)aniline84371-70-0C18H21NO
- (E)-N-(4-Butylphenyl)-1-(2-methoxyphenyl)methanimine89752-88-5C18H21NO
- (E)-N-(2-Butylphenyl)-1-(2-methoxyphenyl)methanimine29757-15-1C18H21NO
- 1-Benzyl-4-phenyl-3-piperidinol2208786-92-7C18H21NO
- (E)-1-(4-Ethoxyphenyl)-N-(4-propylphenyl)methanimine37599-81-8C18H21NO
- 1-{[3-(Phenoxymethyl)phenyl]methyl}pyrrolidine144458-94-6C18H21NO
- Morpholine, 2-(4-ethylphenyl)-6-phenyl-1154909-69-9C18H21NO
- 3-[3-Methyl-5-(1-methylcyclopentyl)phenyl]-2(1H)-pyridinone1206771-21-2C18H21NO
- 3-([1,1'-Biphenyl]-4-ylmethoxy)piperidine532990-90-2C18H21NO
- 1-[1-(6-Methoxynaphthalen-2-yl)prop-1-en-1-yl]pyrrolidine67174-36-1C18H21NO
- 3-[Benzyl(methyl)amino]-2-methyl-2,3-dihydro-1H-inden-1-ol61190-80-5C18H21NO
- N-Benzyl-4-(benzyloxy)but-2-en-1-amine184228-84-0C18H21NO
- 2-Benzhydryltetrahydro-2H-pyran-4-amine1925518-56-4C18H21NO
- 1-Benzyl-8-methoxy-2,3,4,5-tetrahydro-1H-benzo[C]azepine1410789-81-9C18H21NO
- 3-(2,4,6-Trimethylphenyl)-4,5,6,7-tetrahydrocycloocta[d][1,2]oxazole88409-20-5C18H21NO
- 3-(2,4,6-Trimethylphenyl)-6,7,8,9-tetrahydrocycloocta[d][1,2]oxazole88415-47-8C18H21NO
- 1-[1-(4-Phenoxyphenyl)cyclopentyl]methanamine1368468-47-6C18H21NO
- 1-[2,2-Dimethyl-1-(4-phenoxyphenyl)cyclopropyl]methanamine1515378-62-7C18H21NO
- 4-{[1,1'-Biphenyl]-4-yloxy}-4-methylpiperidine1783540-51-1C18H21NO
- 4-((4-Isopropylbenzyl)methylamino)benzaldehyde1187212-41-4C18H21NO
- 4-(((4-Isopropylphenyl)methylamino)methyl)benzaldehyde1187212-45-8C18H21NO
- 4-((Methyl(4-propylphenyl)amino)methyl)benzaldehyde1187212-44-7C18H21NO
- 3-[2-(2,3-Dihydro-3,3-dimethyl-1H-indol-5-yl)ethyl]phenol1609266-58-1C18H21NO
- 4-Amino-1-(3,5-dimethylphenyl)-3-phenylbutan-2-one1715249-35-6C18H21NO
- [4-[4-(Pyrrolidin-1-ylmethyl)phenyl]phenyl]methanol2108623-73-8C18H21NO
- (1S,2S)-2-(Dibenzylamino)cyclobutan-1-ol2954727-27-4C18H21NO
- 1-Benzyl-3-(benzyloxy)pyrrolidine3080982-57-3C18H21NO
- (3S,4R)-3-(Phenoxymethyl)-4-phenylpiperidine112058-91-0C18H21NO
- 2-(Dibenzylamino)cyclobutanol2205384-26-3C18H21NO
- (4'-(Pyrrolidin-1-ylmethyl)-[1,1'-biphenyl]-3-yl)methanol2249573-12-2C18H21NO
- 4-(1-Benzylpiperidin-4-yl)phenol326812-69-5C18H21NO
- N-Cyclopropyl-N-[3-(2-methylphenyl)cyclobutyl]but-2-ynamide2411244-32-9C18H21NO
- 1-Benzyl-2,2-dimethyl-3,4-dihydroquinolin-4-ol2632991-55-8C18H21NO
- N,N-Dibenzyl-1-(oxetan-2-yl)methanamine2649798-59-2C18H21NO
- 1-[4-(Benzyloxy)-2-methylphenyl]cyclobutan-1-amine1314676-28-2C18H21NO
- (1S,3S)-3-[3-(Phenylmethoxy)phenyl]cyclopentanamine1582770-09-9C18H21NO
Frequently asked questions
What is the molar mass of C18H21NO?
The molar mass of C18H21NO is 267.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 1 oxygen atom. The monoisotopic mass is 272.1937 Da.
How many compounds have the formula C18H21NO?
CompoundList lists 429 compounds with the molecular formula C18H21NO, including 4-Benzyl-5-phenyl-1,4-oxazepane, 1-[3-(Benzyloxy)propyl]indoline, N,N-Dibenzyl-3-methyl-oxetan-3-amine. 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 C18H21NO?
C18H21NO has a degree of unsaturation of 9. 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.