Molecular formula
C18H21N3
61 compounds have this formula on CompoundList.
- Molar mass
- 279.39g/mol
- Monoisotopic mass
- 279.1735Da
- Atoms
- 42
- Elements
- 3
- Rings plus double bonds
- 10
The formula C18H21N3 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms and 3 nitrogen atoms. 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 × 1877.38%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 217.58%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 315.04%14.007 × 3 = 42.021 g/mol
Look up another formula
Compounds with the formula C18H21N3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 61 of 61 compounds
![4-[2-Amino-1-(1H-indol-3-yl)ethyl]-N,N-dimethylaniline chemical structure, C18H21N3, CAS 730949-97-0](/s/DUBXLRJWMBQVJY-UHFFFAOYSA-N.svg)
4-[2-Amino-1-(1H-indol-3-yl)ethyl]-N,N-dimethylaniline
CAS 730949-97-0C18H21N3
N-(3-Methylbenzylidene)-4-phenyl-1-piperazinamine
CAS 303092-75-3C18H21N3
N-(2-Methylbenzylidene)-4-phenyl-1-piperazinamine
CAS 303092-74-2C18H21N3
9-(3'-Dimethylaminopropylamino)acridine
CAS 13365-37-2C18H21N3
![1,4,5,7-Tetramethyl-6-(1-phenylethyl)pyrrolo[3,4-d]pyridazine chemical structure, C18H21N3, CAS 433942-67-7](/s/PPODLARJHQHUIQ-UHFFFAOYSA-N.svg)
1,4,5,7-Tetramethyl-6-(1-phenylethyl)pyrrolo[3,4-d]pyridazine
CAS 433942-67-7C18H21N3
![3-(8-Methyl-1,2,3a,4,5,6-hexahydro-3H-pyrazino[3,2,1-jk]carbazol-3-yl)propanenitrile chemical structure, C18H21N3, CAS 329070-85-1](/s/HWJBOELNKXRKJA-UHFFFAOYSA-N.svg)
3-(8-Methyl-1,2,3a,4,5,6-hexahydro-3H-pyrazino[3,2,1-jk]carbazol-3-yl)propanenitrile
CAS 329070-85-1C18H21N3
![6-(3,4-Dimethylphenyl)-1,4,5,7-tetramethyl-6H-pyrrolo[3,4-d]pyridazine chemical structure, C18H21N3, CAS 434291-12-0](/s/JVDMFNQDRKCPDC-UHFFFAOYSA-N.svg)
6-(3,4-Dimethylphenyl)-1,4,5,7-tetramethyl-6H-pyrrolo[3,4-d]pyridazine
CAS 434291-12-0C18H21N3
2,5,6-Trimethyl-1-(3-methylbenzyl)-1H-1,3-benzimidazol-4-amine
CAS 338954-75-9C18H21N3
1-(3-(Methylamino)-propyl)-5-methyl-3-phenyl-1H-indazole
CAS 61365-76-2C18H21N3
Hexahydro-1-(4-(phenylazo)phenyl)-1H-azepine
CAS 152173-68-7C18H21N3
![Dimethyl[4-(1-propylbenzimidazol-2-yl)phenyl]amine chemical structure, C18H21N3, CAS 384359-01-7](/s/DBJLWJSXLLHVAH-UHFFFAOYSA-N.svg)
Dimethyl[4-(1-propylbenzimidazol-2-yl)phenyl]amine
CAS 384359-01-7C18H21N3
![2-(4-tert-Butylphenyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine chemical structure, C18H21N3, CAS 309938-79-2](/s/BDHWRBUERNLZGM-UHFFFAOYSA-N.svg)
2-(4-tert-Butylphenyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine
CAS 309938-79-2C18H21N3
![1H-Indolo[2,3-c]quinolin-1-amine, 2,3,4,7-tetrahydro-3,3,6-trimethyl- chemical structure, C18H21N3, CAS 96725-25-6](/s/KNOJYWPMDFQPCP-UHFFFAOYSA-N.svg)
1H-Indolo[2,3-c]quinolin-1-amine, 2,3,4,7-tetrahydro-3,3,6-trimethyl-
CAS 96725-25-6C18H21N3
4'-Ethyl-4-N-pyrrolidinylazobenzene
CAS 75236-19-0C18H21N3
4-(2,6-Dimethylbenzylamino)-1,2-dimethylbenzimidazole
CAS 200799-12-8C18H21N3
9H,11H-Pyrazino(2,1-c)pyrrolo(1,2-a)(1,4)benzodiazepine, 12,13,14,14a-tetrahydro-13-(2-propenyl)-
CAS 144109-12-6C18H21N3
N1-2-Propyn-1-yl-N2-(1,2,3,4-tetrahydro-9-acridinyl)-1,2-ethanediamine
CAS 1823107-35-2C18H21N3
![N,N-Dimethyl-1-(6-methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)methanamine chemical structure, C18H21N3, CAS 106961-33-5](/s/ZKSRNGXLVCJQCC-UHFFFAOYSA-N.svg)
N,N-Dimethyl-1-(6-methyl-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)methanamine
CAS 106961-33-5C18H21N3
![5-(2-Ethylbutyl)-2-phenyl-5H-imidazo[4,5-c]pyridine chemical structure, C18H21N3, CAS 914296-28-9](/s/SOBOSLDPXCDKFG-UHFFFAOYSA-N.svg)
5-(2-Ethylbutyl)-2-phenyl-5H-imidazo[4,5-c]pyridine
CAS 914296-28-9C18H21N3
Benzonitrile, 4-(5-heptyl-2-pyrimidinyl)-
CAS 59854-97-6C18H21N3
![1-Benzyl-1',2'-dihydrospiro[piperidine-4,3'-pyrrolo[2,3-b]pyridine] chemical structure, C18H21N3, CAS 845552-76-3](/s/VUZVTRCSZJXZQL-UHFFFAOYSA-N.svg)
1-Benzyl-1',2'-dihydrospiro[piperidine-4,3'-pyrrolo[2,3-b]pyridine]
CAS 845552-76-3C18H21N3
![6,11-Dihydro-11-(1-methyl-4-piperidinylidene)-5H-imidazo[2,1-b][3]benzazepine chemical structure, C18H21N3, CAS 147083-36-1](/s/GKTUOCXSVQTQJF-UHFFFAOYSA-N.svg)
6,11-Dihydro-11-(1-methyl-4-piperidinylidene)-5H-imidazo[2,1-b][3]benzazepine
CAS 147083-36-1C18H21N3
1-(2,5-Dimethylbenzyl)-N-ethyl-1H-1,3-benzimidazol-2-amine
CAS 866131-97-7C18H21N3
![2,3-Dimethyl-8-(2,6-dimethylbenzylamino)imidazo[1,2-a]pyridine chemical structure, C18H21N3, CAS 212267-72-6](/s/LPEPDTHLQAYLQJ-UHFFFAOYSA-N.svg)
2,3-Dimethyl-8-(2,6-dimethylbenzylamino)imidazo[1,2-a]pyridine
CAS 212267-72-6C18H21N3
- 1-(2-Phenylethyl)-2-(propan-2-yl)-1H-benzimidazol-5-amine1171665-52-3C18H21N3
- as-Triazine, 1,4,5,6-tetrahydro-1,5-dimethyl-3-diphenylmethyl-22201-90-7C18H21N3
- 1,6-Dimethyl-3-(4-methylphenyl)-5-phenyl-1,4,5,6-tetrahydro-1,2,4-triazine7662-17-1C18H21N3
- 1,6-Dimethyl-3-(3-methylphenyl)-5-phenyl-1,2,5,6-tetrahydro-1,2,4-triazine23569-75-7C18H21N3
- 1-Benzyl-4-(pyridin-4-yl)methyleneaminopiperidine165807-04-5C18H21N3
- 3-[[[2-(Dimethylamino)-1-phenylethyl]amino]methyl]benzonitrile1038277-93-8C18H21N3
- 2-(4-Heptylphenyl)pyrimidine-5-carbonitrile59855-47-9C18H21N3
- [2-(2,5-Dimethyl-1H-indol-3-yl)ethyl][(pyridin-2-yl)methyl]amine1001566-95-5C18H21N3
- Perimidine, 1-(2-piperidinoethyl)-52818-42-5C18H21N3
- 2,4,6-Triethyl-1,3,5-benzenetriacetonitrile181058-09-3C18H21N3
- N-[(1-Ethyl-1H-imidazol-2-yl)methyl]-N-(prop-2-yn-1-yl)-2,3-dihydro-1H-inden-1-amine1252341-34-6C18H21N3
- 1-Phenyl-5-(3-propylphenyl)-4,5-dihydro-1H-pyrazol-3-ylamine1426408-59-4C18H21N3
- 9-Methyl-9H-carbazole-3-carboxaldehyde 2-butylhydrazone50460-16-7C18H21N3
- [2-(2,5-Dimethyl-1H-indol-3-yl)ethyl][(pyridin-3-yl)methyl]amine1001566-94-4C18H21N3
- 4-Methyl-1-(4-(phenylazo)phenyl)piperidine200348-75-0C18H21N3
- 1H-Pyrrolo[2,3-c]pyridin-7-amine,2-methyl-N-(phenylmethyl)-1-propyl-874014-51-4C18H21N3
- 2-(1H-1,3-Benzodiazol-1-yl)-1-[4-(propan-2-yl)phenyl]ethan-1-amine927995-10-6C18H21N3
- 2-(1H-Benzimidazol-1-yl)-3-methyl-1-phenylbutan-1-amine954578-12-2C18H21N3
- 3-Quinolinemethanamine, 2-(1,3-dihydro-2H-isoindol-2-yl)-5,6,7,8-tetrahydro-1458285-04-5C18H21N3
- 2-Benzyl-5-(pyridin-2-yl)octahydropyrrolo[3,4-c]pyrrole1935024-80-8C18H21N3
- [2-(2,5-Dimethyl-1H-indol-3-yl)ethyl][(pyridin-4-yl)methyl]amine1001566-96-6C18H21N3
- N,N-Dimethyl-3-(3-phenyl-1H-indazol-1-yl)propan-1-amine61365-77-3C18H21N3
- 2-(3,4-Dimethylphenyl)-8-methylimidazo[1,2-a]pyridine-3-ethanamine1017331-36-0C18H21N3
- 5,8-Dimethyl-2-(1-piperidinyl)-3-quinolineacetonitrile1017360-41-6C18H21N3
- 7-Methyl-2-(1-piperidinyl)-3-quinolinepropanenitrile1017361-27-1C18H21N3
- Benzonitrile, 3-[[[(2-aminophenyl)methyl](1-methylethyl)amino]methyl]-1154149-59-3C18H21N3
- 1-Benzyl-2-tert-butyl-1H-benzimidazol-4-amine1215946-93-2C18H21N3
- 1-(4-tert-Butylphenyl)-4,5,6,7-tetrahydro-1H-indazole-4-carbonitrile2648965-42-6C18H21N3
- N,N,I(2)-Trimethyl-3-(4-pyridinyl)-1H-indole-1-ethanamine7272-94-8C18H21N3
- 1-Benzyl-N-butyl-1H-benzo[d]imidazol-2-amine225117-62-4C18H21N3
- (4-Benzylpiperazin-1-yl)phenylmethanimine5456-55-3C18H21N3
- 4-[2-(5-Pentylpyrimidin-2-yl)ethyl]benzonitrile88945-35-1C18H21N3
- 1-{4-[(E)-(4-Methylphenyl)diazenyl]phenyl}piperidine40904-88-9C18H21N3
- 4-(2-Heptylpyrimidin-5-yl)benzonitrile65586-42-7C18H21N3
- 2-(2,6-Dimethylpyrimidin-4-yl)-6-phenyl-2-azaspiro[3.3]heptane2380010-68-2C18H21N3
- (S)-N-(1-Phenylethyl)-1-(pyridin-2-yl)piperidin-4-imine2791360-78-4C18H21N3
- (S)-2-(4-(tert-Butyl)-1-phenyl-4,5-dihydro-1H-imidazol-2-yl)pyridine2688032-35-9C18H21N3
Frequently asked questions
What is the molar mass of C18H21N3?
The molar mass of C18H21N3 is 279.39 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms and 3 nitrogen atoms. The monoisotopic mass is 279.1735 Da.
How many compounds have the formula C18H21N3?
CompoundList lists 61 compounds with the molecular formula C18H21N3, including 4-[2-Amino-1-(1H-indol-3-yl)ethyl]-N,N-dimethylaniline, N-(3-Methylbenzylidene)-4-phenyl-1-piperazinamine, N-(2-Methylbenzylidene)-4-phenyl-1-piperazinamine. 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 C18H21N3?
C18H21N3 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.