Molecular formula
C18H21N
122 compounds have this formula on CompoundList.
- Molar mass
- 251.37g/mol
- Monoisotopic mass
- 251.1674Da
- Atoms
- 40
- Elements
- 3
- Rings plus double bonds
- 9
The formula C18H21N describes a molecule made of 18 carbon atoms, 21 hydrogen atoms and 1 nitrogen 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 × 1886.01%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 218.42%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 15.57%14.007 × 1 = 14.007 g/mol
Look up another formula
Compounds with the formula C18H21N
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 122 compounds
4-Benzhydrylpiperidine
CAS 19841-73-7C18H21N
2-Diphenylmethylpiperidine
CAS 519-74-4C18H21N
1-Phenyl-3-dimethylamino-1,2,3,4-tetrahydronaphthalene
CAS 152786-06-6C18H21N
N,N-Dimethyl-4,4-diphenyl-3-buten-2-amine
CAS 29869-90-7C18H21N
2-(1-Adamantyl)-1H-indole
CAS 26845-72-7C18H21N
9-Hexylcarbazole
CAS 4041-21-8C18H21N
N-Cyclohexyl-N-phenylaniline
CAS 4705-13-9C18H21N
Diethylamino stilbene
CAS 40193-47-3C18H21N
p-Methylbenzylidene p-butylaniline
CAS 38549-81-4C18H21N
2-(3-Phenyl-propyl)-1,2,3,4-tetrahydro-isoquinoline
CAS 171415-27-3C18H21N
![1-{[1,1'-Biphenyl]-4-yl}cyclohexan-1-amine chemical structure, C18H21N, CAS 125802-36-0](/s/MQUBHQSJRYVKHT-UHFFFAOYSA-N.svg)
1-{[1,1'-Biphenyl]-4-yl}cyclohexan-1-amine
CAS 125802-36-0C18H21N
1,2,3,4-Tetrahydro-2,2,4-trimethyl-4-phenylquinoline
CAS 13562-24-8C18H21N
9,10-Dihydro-9,9-dimethyl-2-(1-methylethyl)acridine
CAS 63451-42-3C18H21N
4-(2,3-Dihydro-1H-inden-1-ylmethyl)-N,N-dimethylaniline
CAS 25684-15-5C18H21N
6-Butyl-6,7-dihydro-5H-dibenzo(c,e)azepine
CAS 58335-96-9C18H21N
Piperidine, 1-benzyl-4-phenyl-
CAS 19015-37-3C18H21N
trans-4'-tert-Butyl-4-aminostilbene
CAS 74518-99-3C18H21N
Isoquinoline, 1,2,3,4-tetrahydro-4-phenyl-2,3,8-trimethyl-, (E)-
CAS 40830-61-3C18H21N
1-Methyl-4,4-diphenylpiperidine
CAS 31309-39-4C18H21N
trans-4'-sec-Butyl-4-aminostilbene
CAS 345667-59-6C18H21N
1-(4-Biphenylyl)cyclopentanemethanamine
CAS 1368579-58-1C18H21N
2,2-Diphenylcyclopropylmethyl dimethylamine
CAS 63968-76-3C18H21N
1-Benzyl-3,3-dimethyl-2-phenylazetidine
CAS 22606-97-9C18H21N
1,1,3,3-Tetramethyl-5-phenyl-2,3-dihydro-1H-isoindole
CAS 86762-52-9C18H21N
- 1-Phenyl-7-(propan-2-yl)-1,2,3,4-tetrahydroisoquinoline1017230-22-6C18H21N
- 9-tert-Butyl-9-methyl-9,10-dihydroacridine25812-87-7C18H21N
- 5H-Dibenzo(a,d)cyclohepten-10-amine, 10,11-dihydro-N-isopropyl-31802-16-1C18H21N
- 1,2,4-Ethanylylidene-1H-cyclobuta(cd)pentalen-3-amine, octahydro-N-(phenylmethyl)-136375-93-4C18H21N
- 1-Benzyl-2-phenylpiperidine36939-29-4C18H21N
- N-Butyl-N-methyl-9H-fluoren-9-amine119454-90-9C18H21N
- 3-[4-(4-Propylcyclohexyl)phenyl]prop-2-ynenitrile101559-74-4C18H21N
- N,N-Dibenzyl-1-methylcyclopropan-1-amine176209-20-4C18H21N
- 3,6-Diisopropyl-9H-carbazole1839048-43-9C18H21N
- Benz[c]acridine, 1,2,3,4,8,9,10,11-octahydro-7-methyl-55044-73-0C18H21N
- 1,2,3,4,7,8,9,10-Octahydro-12-methylbenz[b]acridine55044-74-1C18H21N
- 2-(4-Ethylbenzyl)-1,2,3,4-tetrahydroisoquinoline827333-07-3C18H21N
- 3,3,5,7-Tetramethyl-2-phenylindoline337471-19-9C18H21N
- 1-Propanamine, N-(diphenylmethylene)-2,2-dimethyl-24590-76-9C18H21N
- 1-(4-Methylphenyl)-4-phenylpiperidine207913-09-5C18H21N
- 3-(Diphenylmethyl)piperidine63175-10-0C18H21N
- 2-Benzylaminomethyl-1,2,3,4-tetrahydronaphthalene129280-20-2C18H21N
- 4-({[1,1'-Biphenyl]-4-yl}methyl)piperidine1082544-79-3C18H21N
- 4'-Cyclohexyl[1,1'-biphenyl]-2-amine1285249-10-6C18H21N
- N-((9H-fluoren-9-yl)Methyl)-N-ethylethanaMine2733516-71-5C18H21N
- 3-(4'-Propyl-4-biphenylyl)azetidine2739976-71-5C18H21N
- N,N-Dimethyl-4,4-diphenylbut-3-en-1-amine28916-83-8C18H21N
- 5,6,7,12-Tetrahydro-6-(1-methylethyl)dibenz[c,f]azocine16031-87-1C18H21N
- 1-Ethyl-3,3-diphenylpyrrolidine5415-75-8C18H21N
- 2-[4-(tert-Butyl)phenyl]indoline595548-78-0C18H21N
- N-[(2,4-Dimethylphenyl)(phenyl)methyl]cyclopropanamine926258-14-2C18H21N
- 1-([1,1'-Biphenyl]-4-ylmethyl)piperidine857241-92-0C18H21N
- (2R,5R)-2,5-Dibenzylpyrrolidine727643-33-6C18H21N
- 1-(3-Phenylpropyl)-1,2,3,4-tetrahydroisoquinoline1409425-37-1C18H21N
- 5,6,7,12-Tetrahydro-6-propyldibenz[c,f]azocine16046-08-5C18H21N
- (2S)-2-(Diphenylmethyl)piperidine71827-05-9C18H21N
- Benzeneethanamine, N-(phenylmethyl)-N-2-propenyl-210347-81-2C18H21N
- 4-(1,3,3-Trimethyl-2,3-dihydro-1H-inden-1-yl)aniline93369-00-7C18H21N
- 1-[3-(4-Methylphenyl)propyl]-2-phenylaziridine88961-09-5C18H21N
- 4'-Cyclohexyl[1,1'-biphenyl]-4-amine854662-24-1C18H21N
- 2,2,4-Trimethyl-6-phenyl-1,2,3,4-tetrahydroquinoline179894-33-8C18H21N
- 7-Methyl-1-(2-phenylethyl)-1,2,3,4-tetrahydroisoquinoline1017179-22-4C18H21N
- 2,3-Dihydro-N-[1-(4-methylphenyl)ethyl]-1H-inden-1-amine1038240-00-4C18H21N
- 3,6-Diphenylhex-5-en-3-amine129140-12-1C18H21N
- 1-([1,1'-Biphenyl]-2-ylmethyl)piperidine858828-56-5C18H21N
- N-(3-Benzyl-5-methylbenzyl)cyclopropanamine1194488-82-8C18H21N
- 1,2,3,4-Tetrahydro-3-(3-phenylpropyl)isoquinoline1070668-05-1C18H21N
- (2S)-2-(1,1-Diphenylethyl)pyrrolidine920756-62-3C18H21N
- 3,3-Dibenzylpyrrolidine1284173-75-6C18H21N
- 3-[(4-Phenylphenyl)methyl]piperidine1310143-73-7C18H21N
- 2-Naphthaleneethanamine, 5,6,7,8-tetrahydro-I(2)-phenyl-1082502-19-9C18H21N
- 1-[2-(4-Methylphenyl)ethyl]-1,2,3,4-tetrahydroisoquinoline1512385-17-9C18H21N
- 4-tert-Butyl-2-(1-phenylethenyl)aniline189252-13-9C18H21N
- 2,7-Diisopropyl-9H-carbazole1446911-77-8C18H21N
- 1-(1-{[1,1'-Biphenyl]-2-yl}cyclopentyl)methanamine1891761-96-8C18H21N
- 1-{[1,1'-Biphenyl]-2-yl}cyclohexan-1-amine1898083-26-5C18H21N
- 2-[(2-Phenylphenyl)methyl]piperidine1892061-12-9C18H21N
- 3-({[1,1'-Biphenyl]-2-yl}methyl)piperidine1898309-37-9C18H21N
- 4-[(2-Phenylphenyl)methyl]piperidine1800372-42-2C18H21N
- 1-(Diphenylmethyl)cyclopentan-1-amine1704079-23-1C18H21N
- (2R)-2-(4'-Methyl[1,1'-biphenyl]-4-yl)piperidine1213021-56-7C18H21N
- 2,4,6-Trimethyl-N-[1-(4-methylphenyl)ethylidene]benzenamine1227637-88-8C18H21N
- 1-(3-{[1,1'-Biphenyl]-2-yl}-2,2-dimethylcyclopropyl)methanamine2228679-52-3C18H21N
- 2-(1-{[1,1'-Biphenyl]-4-yl}cyclobutyl)ethan-1-amine2229601-52-7C18H21N
- 1-(1-{[1,1'-Biphenyl]-2-yl}-2,2-dimethylcyclopropyl)methanamine2229081-69-8C18H21N
- 2-(1-{[1,1'-Biphenyl]-2-yl}cyclobutyl)ethan-1-amine2229323-19-5C18H21N
- 1-(3-{[1,1'-Biphenyl]-4-yl}-2,2-dimethylcyclopropyl)methanamine2228796-58-3C18H21N
- 1-Benzyl-3-(p-tolyl)pyrrolidine220474-58-8C18H21N
- 2-(2,2-Diphenylethyl)pyrrolidine383127-47-7C18H21N
- 5-(tert-Butyl)-2-phenylindoline594820-21-0C18H21N
- 1-Methyl-4-[(E)-2-naphthalen-1-ylethenyl]piperidine117613-41-9C18H21N
- 2-Ethyl-1,2,3,4-tetrahydro-1-methyl-1-phenylisoquinoline749814-49-1C18H21N
- 5-(4-tert-Butylphenyl)indoline893736-15-7C18H21N
- N-Cyclohexyl-[1,1'-biphenyl]-2-amine1036463-40-7C18H21N
- 1-[(4'-Methyl[1,1'-biphenyl]-3-yl)methyl]pyrrolidine2780338-09-0C18H21N
- 5-(4-Isopropylphenyl)-1,2,3,4-tetrahydroisoquinoline1492241-84-5C18H21N
- (E)-1-(4-Butylphenyl)-N-(4-methylphenyl)methanimine90440-95-2C18H21N
- 4-([1,1'-Biphenyl]-4-yl)-N,N-dimethylbut-3-en-1-amine106291-48-9C18H21N
- 3-Benzyl-1,2-dimethyl-1,2,3,4-tetrahydroquinoline85591-77-1C18H21N
- 5-(4-Isopropylphenyl)-1,2,3,4-tetrahydroquinoline1509581-38-7C18H21N
- 7-(4-Propylphenyl)-1,2,3,4-tetrahydroquinoline1542332-04-6C18H21N
Frequently asked questions
What is the molar mass of C18H21N?
The molar mass of C18H21N is 251.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms and 1 nitrogen atom. The monoisotopic mass is 251.1674 Da.
How many compounds have the formula C18H21N?
CompoundList lists 122 compounds with the molecular formula C18H21N, including 4-Benzhydrylpiperidine, 2-Diphenylmethylpiperidine, 1-Phenyl-3-dimethylamino-1,2,3,4-tetrahydronaphthalene. 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 C18H21N?
C18H21N 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.