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 301 to 400 of 429 compounds
3,4-Dihydro-1-phenyl-2(1H)-isoquinolinepropanol
CAS 32973-54-9C18H21NO
![3-(3'-Methoxy[1,1'-biphenyl]-3-yl)piperidine chemical structure, C18H21NO, CAS 1260852-43-4](/s/YWXKGKIUIRFUEG-UHFFFAOYSA-N.svg)
3-(3'-Methoxy[1,1'-biphenyl]-3-yl)piperidine
CAS 1260852-43-4C18H21NO
![4-[1-(1,2,3,4-Tetrahydro-6-methoxy-1-naphthalenyl)ethyl]pyridine chemical structure, C18H21NO, CAS 10170-06-6](/s/CLVIOMVFAMSEMW-UHFFFAOYSA-N.svg)
4-[1-(1,2,3,4-Tetrahydro-6-methoxy-1-naphthalenyl)ethyl]pyridine
CAS 10170-06-6C18H21NO
![(R)-1-Cyclopropyl-1-{3-[(4-methylphenyl)methoxy]phenyl}methanamine chemical structure, C18H21NO, CAS 1212831-54-3](/s/KYTGEQRSVGZFRB-GOSISDBHSA-N.svg)
(R)-1-Cyclopropyl-1-{3-[(4-methylphenyl)methoxy]phenyl}methanamine
CAS 1212831-54-3C18H21NO
![1-Cyclopropyl-1-{3-[(2-methylphenyl)methoxy]phenyl}methanamine chemical structure, C18H21NO, CAS 1704082-17-6](/s/WJIHJSBMTVGHED-UHFFFAOYSA-N.svg)
1-Cyclopropyl-1-{3-[(2-methylphenyl)methoxy]phenyl}methanamine
CAS 1704082-17-6C18H21NO
![N-[(4-Ethoxyphenyl)methyl]-3-phenylprop-2-en-1-amine chemical structure, C18H21NO, CAS 1563680-04-5](/s/QWXJNBZJDHUTGC-UHFFFAOYSA-N.svg)
N-[(4-Ethoxyphenyl)methyl]-3-phenylprop-2-en-1-amine
CAS 1563680-04-5C18H21NO
1-Ethyl-2,3-dihydro-3,3-dimethyl-2-phenyl-1H-indol-2-ol
CAS 34058-55-4C18H21NO
5-Phenyl-3-(2,6,6-trimethyl-1-cyclohexen-1-yl)isoxazole
CAS 19221-86-4C18H21NO
![1-[2,2-Dimethyl-3-(3-phenoxyphenyl)cyclopropyl]methanamine chemical structure, C18H21NO, CAS 2228686-56-2](/s/ZGIDEKVHOGCOSD-UHFFFAOYSA-N.svg)
1-[2,2-Dimethyl-3-(3-phenoxyphenyl)cyclopropyl]methanamine
CAS 2228686-56-2C18H21NO
![4-Amino-4-{[1,1'-biphenyl]-4-yl}cyclohexan-1-ol chemical structure, C18H21NO, CAS 2228679-45-4](/s/BWHANZVLDRASAU-UHFFFAOYSA-N.svg)
4-Amino-4-{[1,1'-biphenyl]-4-yl}cyclohexan-1-ol
CAS 2228679-45-4C18H21NO
![3-({[1,1'-Biphenyl]-2-yl}methyl)piperidin-3-ol chemical structure, C18H21NO, CAS 2229293-46-1](/s/NZJUHMKJQBRCBG-UHFFFAOYSA-N.svg)
3-({[1,1'-Biphenyl]-2-yl}methyl)piperidin-3-ol
CAS 2229293-46-1C18H21NO
![3-({[1,1'-Biphenyl]-4-yl}methyl)piperidin-3-ol chemical structure, C18H21NO, CAS 2228696-87-3](/s/SBXSEHHDKKLFQH-UHFFFAOYSA-N.svg)
3-({[1,1'-Biphenyl]-4-yl}methyl)piperidin-3-ol
CAS 2228696-87-3C18H21NO
![4-{[1,1'-Biphenyl]-2-yloxy}-4-methylpiperidine chemical structure, C18H21NO, CAS 2228939-12-4](/s/MARWTGVLLUKAQG-UHFFFAOYSA-N.svg)
4-{[1,1'-Biphenyl]-2-yloxy}-4-methylpiperidine
CAS 2228939-12-4C18H21NO
![1-[2,2-Dimethyl-3-(2-phenoxyphenyl)cyclopropyl]methanamine chemical structure, C18H21NO, CAS 2228283-37-0](/s/WWNSSOKIYIWIKT-UHFFFAOYSA-N.svg)
1-[2,2-Dimethyl-3-(2-phenoxyphenyl)cyclopropyl]methanamine
CAS 2228283-37-0C18H21NO
![1-[2,2-Dimethyl-3-(4-phenoxyphenyl)cyclopropyl]methanamine chemical structure, C18H21NO, CAS 2229470-10-2](/s/ACNBIZCQAQTZQU-UHFFFAOYSA-N.svg)
1-[2,2-Dimethyl-3-(4-phenoxyphenyl)cyclopropyl]methanamine
CAS 2229470-10-2C18H21NO
![1-[1-(2-Phenoxyphenyl)cyclopentyl]methanamine chemical structure, C18H21NO, CAS 2228662-46-0](/s/SGLGNEOLBHLQQH-UHFFFAOYSA-N.svg)
1-[1-(2-Phenoxyphenyl)cyclopentyl]methanamine
CAS 2228662-46-0C18H21NO
![1-[2,2-Dimethyl-1-(3-phenoxyphenyl)cyclopropyl]methanamine chemical structure, C18H21NO, CAS 2228159-67-7](/s/XCUOZZVSDJVFTR-UHFFFAOYSA-N.svg)
1-[2,2-Dimethyl-1-(3-phenoxyphenyl)cyclopropyl]methanamine
CAS 2228159-67-7C18H21NO
![1-[2,2-Dimethyl-1-(2-phenoxyphenyl)cyclopropyl]methanamine chemical structure, C18H21NO, CAS 2229456-06-6](/s/PJGHRIPRWKJSEF-UHFFFAOYSA-N.svg)
1-[2,2-Dimethyl-1-(2-phenoxyphenyl)cyclopropyl]methanamine
CAS 2229456-06-6C18H21NO
(5S)-2,3,4,5-Tetrahydro-3,8-dimethyl-5beta-phenyl-1H-3-benzazepin-7-ol
CAS 105301-42-6C18H21NO
3-(3,4-Dihydro-1H-isoquinolin-2-yl)-1-phenylpropan-1-ol
CAS 16576-50-4C18H21NO
![N-[2-(3-Methylphenyl)propan-2-yl]-2-phenylacetamide chemical structure, C18H21NO, CAS 79998-22-4](/s/JXJWVEOEZIJGJG-UHFFFAOYSA-N.svg)
N-[2-(3-Methylphenyl)propan-2-yl]-2-phenylacetamide
CAS 79998-22-4C18H21NO
2-(2-Methylphenyl)-N-(2-phenylpropan-2-yl)acetamide
CAS 77245-86-4C18H21NO
![2-(2-{2-[(Dimethylamino)methyl]phenyl}prop-2-en-1-yl)phenol chemical structure, C18H21NO, CAS 90136-97-3](/s/GNADTMYSIPTSDV-UHFFFAOYSA-N.svg)
2-(2-{2-[(Dimethylamino)methyl]phenyl}prop-2-en-1-yl)phenol
CAS 90136-97-3C18H21NO
![7-Benzyl-5-ethenylidene-7-azabicyclo[4.2.2]decan-8-one chemical structure, C18H21NO, CAS 88996-17-2](/s/HLZCCXYURQELEZ-UHFFFAOYSA-N.svg)
7-Benzyl-5-ethenylidene-7-azabicyclo[4.2.2]decan-8-one
CAS 88996-17-2C18H21NO
- N-[1,2-Bis(4-methylphenyl)ethyl]acetamide89165-04-8C18H21NO
- 7,7,9-Trimethyl-5,6,6a,7,8,10a-hexahydroindeno[2,1-b]indol-6-ol143615-53-6C18H21NO
- (2S,3R)-1-Benzyl-3-hydroxy-2-phenylpiperidine220058-24-2C18H21NO
- 1-Naphthalen-1-yl-3-piperidin-1-ylpropan-1-one803630-40-2C18H21NO
- 5,5-Dimethyl-2,3-diphenylmorpholine1094657-84-7C18H21NO
- N-Benzhydryloxan-4-amine625126-73-0C18H21NO
- N-[(2,3-Dihydro-1-benzofuran-5-yl)methyl]-4-(propan-2-yl)aniline1157332-66-5C18H21NO
- 2-(4-Phenoxyphenyl)azepane946682-01-5C18H21NO
- ZR6Lxx7wes1217171-22-6C18H21NO
- 7-(2-Isopropoxyphenyl)-1,2,3,4-tetrahydroisoquinoline1309331-69-8C18H21NO
- 1-Benzyl-3-(2-methoxyphenyl)pyrrolidine352231-45-9C18H21NO
- 1-Benzyl-3-(3-methoxyphenyl)pyrrolidine1056971-34-6C18H21NO
- N-(2-Ethoxy-4-methylphenyl)-2,3-dihydro-1H-inden-1-amine1182438-71-6C18H21NO
- N,N-Diethyl-4'-methyl[1,1'-biphenyl]-2-carboxamide937166-55-7C18H21NO
- 1-[(9,10-Dihydrophenanthren-9-yl)amino]butan-2-ol143208-65-5C18H21NO
- 5-(Benzylamino)-5-phenylpent-3-en-1-ol668995-43-5C18H21NO
- 4-{(2R)-2-[(2,3-Dihydro-1H-inden-2-yl)amino]propyl}phenol667919-41-7C18H21NO
- 4-Anilino-2-(4-methylpent-3-en-2-yl)phenol66650-89-3C18H21NO
- N-(2,4-Dimethylphenyl)-N-(2-phenylethyl)acetamide64745-24-0C18H21NO
- 3,4,7-Trimethyl-9-phenyl-7-azabicyclo[4.3.1]deca-3,8-dien-10-one62215-11-6C18H21NO
- N-(Cyclohex-1-en-1-yl)-N-methyl-3,4-dihydronaphthalene-1-carboxamide61576-15-6C18H21NO
- 1-Butyl-1,2,3,4-tetrahydrobenzo[h]quinoline-6-carbaldehyde922528-50-5C18H21NO
- N-(2-Ethyl-6-methylphenyl)-2-phenylpropanamide1447973-35-4C18H21NO
- 5-(4-Isopropoxyphenyl)-1,2,3,4-tetrahydroquinoline1514687-22-9C18H21NO
- 5-(2-Isopropoxyphenyl)-1,2,3,4-tetrahydroquinoline1539447-12-5C18H21NO
- 5-(3-Isopropoxyphenyl)-1,2,3,4-tetrahydroquinoline1522599-08-1C18H21NO
- 3-((9H-Fluoren-2-yl)amino)-2,2-dimethylpropan-1-ol1521456-48-3C18H21NO
- 1-(4-Phenoxyphenyl)cyclohexan-1-amine1368984-62-6C18H21NO
- 4-(1-(2-Methylindolin-1-yl)propyl)phenol1553342-47-4C18H21NO
- 1-[(3-Methoxyphenyl)methyl]-6-methyl-1,2,3,4-tetrahydroisoquinoline1532248-84-2C18H21NO
- 4-(Adamantan-1-ylmethoxy)benzonitrile1782321-90-7C18H21NO
- 1-(3-Phenoxyphenyl)cyclohexan-1-amine129329-47-1C18H21NO
- 4-tert-Butyl-2-(6-cyclopropyl-3-pyridinyl)phenol1609654-70-7C18H21NO
- (2R,3S)-1-Benzyl-2-phenylpiperidin-3-ol872726-31-3C18H21NO
- 1-Benzyl-2-(2-methoxyphenyl)pyrrolidine1355219-96-3C18H21NO
- 6-(tert-Butyl)-3-phenyl-3,4-dihydro-2H-benzo[b][1,4]oxazine1707378-98-0C18H21NO
- 2-[3-(Benzyloxy)phenyl]piperidine1270391-52-0C18H21NO
- 1-[3-(Benzyloxy)phenyl]cyclopentan-1-amine1897225-25-0C18H21NO
- trans-(1R,2R)-2-(Dibenzylamino)cyclobutan-1-ol2159974-32-8C18H21NO
- N-Benzyl-4-methylbuphedrone1445751-39-2C18H21NO
- 1-[2-(3-Phenoxyphenyl)propan-2-yl]cyclopropan-1-amine2228483-93-8C18H21NO
- 3-[(3-Phenoxyphenyl)methyl]piperidine1337480-04-2C18H21NO
- 3-[2-(Benzyloxy)phenyl]piperidine1260849-74-8C18H21NO
- 3-(Aminomethyl)-3-(diphenylmethyl)cyclobutan-1-ol2228306-26-9C18H21NO
- 4-Amino-4-(2-phenylphenyl)cyclohexan-1-ol2229015-78-3C18H21NO
- [1-(3-Phenoxyphenyl)cyclopentyl]methanamine2001588-75-4C18H21NO
- 2-[2-(Benzyloxy)phenyl]piperidine1391096-74-4C18H21NO
- 1-[2-(4-Phenoxyphenyl)propan-2-yl]cyclopropan-1-amine2229534-55-6C18H21NO
- 2-[1-(3-Phenoxyphenyl)cyclopropyl]propan-2-amine2229423-25-8C18H21NO
- 1-[4-(Benzyloxy)phenyl]-2,2-dimethylcyclopropan-1-amine2228554-77-4C18H21NO
- 4-[(2-Phenylphenyl)methyl]piperidin-4-ol2229584-94-3C18H21NO
- 1-[2-(Benzyloxy)phenyl]-2,2-dimethylcyclopropan-1-amine2229594-91-4C18H21NO
- 1-[3-(Benzyloxy)phenyl]-2,2-dimethylcyclopropan-1-amine2228618-58-2C18H21NO
- 4-[(4-Phenylphenyl)methyl]piperidin-4-ol2228732-40-7C18H21NO
- 2-[1-(2-Phenoxyphenyl)cyclopropyl]propan-2-amine2228238-45-5C18H21NO
- 1-[2-(Benzyloxy)phenyl]cyclopentan-1-amine2229326-73-0C18H21NO
- 3-[2-(Benzyloxy)phenyl]-2,2-dimethylcyclopropan-1-amine2228254-50-8C18H21NO
- 3-(2,2-Diphenylethyl)pyrrolidin-3-ol2228411-40-1C18H21NO
- 2-[1-(4-Phenoxyphenyl)cyclopropyl]propan-2-amine2228741-67-9C18H21NO
- rac-(1R,3S)-3-[3-(Benzyloxy)phenyl]-2,2-dimethylcyclopropan-1-amine2227857-62-5C18H21NO
- 2-[4-(Benzyloxy)phenyl]piperidine901919-37-7C18H21NO
- 1-(2-Phenoxyphenyl)cyclohexan-1-amine2229374-71-2C18H21NO
- 1-[4-(Benzyloxy)phenyl]cyclopentan-1-amine2228489-90-3C18H21NO
- 3-[3-(Benzyloxy)phenyl]-2,2-dimethylcyclopropan-1-amine1995163-10-4C18H21NO
- 3-[4-(Benzyloxy)phenyl]-2,2-dimethylcyclopropan-1-amine1876127-20-6C18H21NO
- 4-[(3-Phenoxyphenyl)methyl]piperidine2228486-43-7C18H21NO
- 1-[2-(2-Phenoxyphenyl)propan-2-yl]cyclopropan-1-amine2229420-89-5C18H21NO
- [(2R,3S)-1-Benzhydryl-2-methyl-azetidin-3-yl]methanol2920233-10-7C18H21NO
- 3-(3-(Benzyloxy)phenyl)cyclopentanamine1391267-27-8C18H21NO
- 3-(4-(Benzyloxy)phenyl)cyclopentanamine1391337-91-9C18H21NO
- 6-(4-Hexylphenyl)nicotinaldehyde3052804-40-4C18H21NO
- (4-Ethynylpiperidin-1-yl)(5,6,7,8-tetrahydronaphthalen-1-yl)methanone2954429-01-5C18H21NO
- N-Methyl-2-phenyl-N-(1-phenylpropan-2-yl)acetamide14902-32-0C18H21NO
- 2-[(10,11-Dihydro-5H-dibenzo[a,d]cyclohepten-5-yl)oxy]-N-methyl-ethanamine47048-55-5C18H21NO
- N-(2,2-Dimethylpropyl)-1-(3-phenoxyphenyl)methanimine98992-46-2C18H21NO
- 6-Methoxy-1-(2-phenylethyl)-1,2,3,4-tetrahydroisoquinoline226942-19-4C18H21NO
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 3,4-Dihydro-1-phenyl-2(1H)-isoquinolinepropanol, 3-(3'-Methoxy[1,1'-biphenyl]-3-yl)piperidine, 4-[1-(1,2,3,4-Tetrahydro-6-methoxy-1-naphthalenyl)ethyl]pyridine. 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.