Molecular formula
C18H21N3O
285 compounds have this formula on CompoundList.
- Molar mass
- 295.39g/mol
- Monoisotopic mass
- 295.1685Da
- Atoms
- 43
- Elements
- 4
- Rings plus double bonds
- 10
The formula C18H21N3O describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms 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 × 1873.19%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 217.17%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 314.23%14.007 × 3 = 42.021 g/mol
- O Oxygen × 15.42%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C18H21N3O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 285 compounds
Dibenzepin
CAS 4498-32-2C18H21N3O
![2-[1-(4-Phenyl-piperazin-1-ylimino)-ethyl]-phenol chemical structure, C18H21N3O, CAS 315216-48-9](/s/VGPNSVINCKOLHJ-XDJHFCHBSA-N.svg)
2-[1-(4-Phenyl-piperazin-1-ylimino)-ethyl]-phenol
CAS 315216-48-9C18H21N3O
![N'-[4-(Diethylamino)benzylidene]benzohydrazide chemical structure, C18H21N3O, CAS 71727-41-8](/s/HBZQDULNYRWEEB-XMHGGMMESA-N.svg)
N'-[4-(Diethylamino)benzylidene]benzohydrazide
CAS 71727-41-8C18H21N3O
![2-{[(1-Butyl-1H-benzimidazol-2-yl)amino]methyl}phenol chemical structure, C18H21N3O, CAS 384377-41-7](/s/SERVSPLCWYKOOP-UHFFFAOYSA-N.svg)
2-{[(1-Butyl-1H-benzimidazol-2-yl)amino]methyl}phenol
CAS 384377-41-7C18H21N3O
N-Nitrosodesipramine
CAS 57164-17-7C18H21N3O
2-Allyl-6-phenyl-5-piperidino-3(2H)-pyridazinone
CAS 861208-96-0C18H21N3O
3-Phenyl-1-(4-pyridin-2-ylpiperazin-1-yl)propan-1-one
CAS 332143-65-4C18H21N3O
N-Benzyl-4-phenylpiperazine-1-carboxamide
CAS 209330-12-1C18H21N3O
![1-[4-(Dimethylamino)phenyl]-2-(1-methyl-1H-benzimidazol-2-yl)ethanol chemical structure, C18H21N3O, CAS 309724-80-9](/s/XLLVFCQSURIOHM-UHFFFAOYSA-N.svg)
1-[4-(Dimethylamino)phenyl]-2-(1-methyl-1H-benzimidazol-2-yl)ethanol
CAS 309724-80-9C18H21N3O
1,3-Diazatricyclo(3.3.1.1(sup 3,7))decan-6-one, 5,7-dimethyl-2-(1H-indol-3-yl)-
CAS 108790-75-6C18H21N3O
![2-[[(1-tert-Butylbenzimidazol-5-yl)amino]methyl]phenol chemical structure, C18H21N3O, CAS 896851-25-5](/s/RZQYMWFGBPAGBX-UHFFFAOYSA-N.svg)
2-[[(1-tert-Butylbenzimidazol-5-yl)amino]methyl]phenol
CAS 896851-25-5C18H21N3O
![Piperazine, 1-benzoyl-4-[2-(2-pyridinyl)ethyl]- chemical structure, C18H21N3O, CAS 90125-72-7](/s/PADVCUJHQUFPMP-UHFFFAOYSA-N.svg)
Piperazine, 1-benzoyl-4-[2-(2-pyridinyl)ethyl]-
CAS 90125-72-7C18H21N3O
(1,2-Dimethyl-1H-benzoimidazol-5-yl)-(4-ethoxy-benzyl)-amine
CAS 292052-59-6C18H21N3O
![N-(2-Ethoxyphenyl)-1-isopropyl-1H-benzo[d]imidazol-2-amine chemical structure, C18H21N3O, CAS 630091-94-0](/s/LEFDSVRFFPUBQY-UHFFFAOYSA-N.svg)
N-(2-Ethoxyphenyl)-1-isopropyl-1H-benzo[d]imidazol-2-amine
CAS 630091-94-0C18H21N3O
(3,4-Dimethylphenyl)-(4-pyridin-2-ylpiperazin-1-yl)methanone
CAS 690985-14-9C18H21N3O
![2-[(2,4-Dimethylphenyl)amino]-4,7-dimethyl-7,8-dihydroquinazolin-5(6H)-one chemical structure, C18H21N3O, CAS 878972-23-7](/s/BHWZWQFQVIZWMF-UHFFFAOYSA-N.svg)
2-[(2,4-Dimethylphenyl)amino]-4,7-dimethyl-7,8-dihydroquinazolin-5(6H)-one
CAS 878972-23-7C18H21N3O
2-(4-Ethylanilino)-7,7-dimethyl-6,8-dihydroquinazolin-5-one
CAS 714257-35-9C18H21N3O
![4-Methyl-2-{[(1-propyl-1H-benzimidazol-2-yl)amino]methyl}phenol chemical structure, C18H21N3O, CAS 364619-67-0](/s/MQWMBWVDNCWEFV-UHFFFAOYSA-N.svg)
4-Methyl-2-{[(1-propyl-1H-benzimidazol-2-yl)amino]methyl}phenol
CAS 364619-67-0C18H21N3O
![N-[4-(4-Methylpiperazin-1-yl)phenyl]benzamide chemical structure, C18H21N3O, CAS 448199-04-0](/s/CDESFTSRAZNPBO-UHFFFAOYSA-N.svg)
N-[4-(4-Methylpiperazin-1-yl)phenyl]benzamide
CAS 448199-04-0C18H21N3O
![4-Methyl-2-[[(1-propan-2-ylbenzimidazol-2-yl)amino]methyl]phenol chemical structure, C18H21N3O, CAS 732257-27-1](/s/PICRASQQCNIMQU-UHFFFAOYSA-N.svg)
4-Methyl-2-[[(1-propan-2-ylbenzimidazol-2-yl)amino]methyl]phenol
CAS 732257-27-1C18H21N3O
1-Isonicotinoyl-4-(2-phenylethyl)piperazine
CAS 830341-26-9C18H21N3O
![6-(4-Ethoxyphenyl)-1,4,5,7-tetramethyl-6H-pyrrolo[3,4-d]pyridazine chemical structure, C18H21N3O, CAS 461432-09-7](/s/PNNKFYQBFUGYEX-UHFFFAOYSA-N.svg)
6-(4-Ethoxyphenyl)-1,4,5,7-tetramethyl-6H-pyrrolo[3,4-d]pyridazine
CAS 461432-09-7C18H21N3O
![2-[4-(Dimethylamino)phenyl]-2,3-dihydro-1,3-dimethyl-4(1H)-quinazolinone chemical structure, C18H21N3O, CAS 842955-64-0](/s/GBOHJUQDELAZTL-UHFFFAOYSA-N.svg)
2-[4-(Dimethylamino)phenyl]-2,3-dihydro-1,3-dimethyl-4(1H)-quinazolinone
CAS 842955-64-0C18H21N3O
N-(1H-1,3-Benzodiazol-2-yl)adamantane-1-carboxamide
CAS 360061-25-2C18H21N3O
- 1-Methyl-2-[5-(piperidin-1-ylmethyl)furan-2-yl]benzimidazole690709-27-4C18H21N3O
- 2-Phenyl-1-[4-(pyridin-2-ylmethyl)piperazin-1-yl]ethanone354535-98-1C18H21N3O
- 2-(4-Methylphenyl)-1-(4-pyridin-2-ylpiperazin-1-yl)ethanone694445-50-6C18H21N3O
- 4-{(E)-[(4-Benzylpiperazin-1-yl)imino]methyl}phenol304909-00-0C18H21N3O
- 4-Benzyl-N-phenylpiperazine-1-carboxamide65766-74-7C18H21N3O
- N-(1-Benzyl-3-cyano-4,5-dimethyl-1H-pyrrol-2-yl)-2-methylpropanamide478032-99-4C18H21N3O
- 2-(1H-1,2,3-Benzotriazol-1-ylmethyl)-6-tert-butyl-4-methylphenol132980-36-0C18H21N3O
- N-[4-(4-Methyl-1-piperidinyl)phenyl]nicotinamide701245-59-2C18H21N3O
- 4-Methyl-N-(3-phenylphenyl)piperazine-1-carboxamide6336-73-8C18H21N3O
- 4'-(4-(Diethylamino)phenylazo)acetophenone22700-65-8C18H21N3O
- 2-{1-[2-(3-Methoxyphenyl)ethyl]-1H-1,3-benzodiazol-2-yl}ethan-1-amine2694733-77-0C18H21N3O
- 2-(4-tert-Butylphenoxy)-4-(dimethylamino)pyridine-3-carbonitrile341967-06-4C18H21N3O
- 1,3-Dimethyl-5-[(1-phenyl-ethylamino)-methyl]-1,3-dihydro-benzoimidazol-2-one881449-98-5C18H21N3O
- 2-Amino-7-(4-tert-butylphenyl)-7,8-dihydroquinazolin-5(6H)-one523990-62-7C18H21N3O
- (8beta)-9,10-Didehydro-N-ethyl-6-methylergoline-8-carboxamide478-99-9C18H21N3O
- N-(4-Methyl-1-piperazinyl)[1,1'-biphenyl]-4-carboxamide328270-00-4C18H21N3O
- N-Tricyclo[3.3.1.13,7]dec-1-yl-1H-Indazole-3-carboxamide516445-83-3C18H21N3O
- 1,3-Dimethyl-5-(phenethylamino-methyl)-1,3-dihydro-benzoimidazol-2-one881450-23-3C18H21N3O
- 2-Phenyl-1-[4-(pyridin-4-ylmethyl)piperazin-1-yl]ethanone354535-48-1C18H21N3O
- 1,3-Dimethyl-5-{[(4-methylbenzyl)amino]methyl}-1,3-dihydro-2H-benzimidazol-2-one881442-16-6C18H21N3O
- 1-(4-(4-((Pyridin-2-yl)methyl)piperazin-1-yl)phenyl)ethanone415925-40-5C18H21N3O
- (8beta)-9,10-Didehydro-N,N,6-trimethylergoline-8-carboxamide4238-84-0C18H21N3O
- 7,7-Dimethyl-2-[(2-phenylethyl)amino]-7,8-dihydroquinazolin-5(6H)-one515874-74-5C18H21N3O
- 1-(4-{4-[(Pyridin-3-yl)methyl]piperazin-1-yl}phenyl)ethan-1-one415712-72-0C18H21N3O
- 1-Benzoyl-4-(2-pyridin-4-ylethyl)piperazine931699-98-8C18H21N3O
- 5-(3-(Dimethylamino)propyl)-5,10-dihydro-11H-dibenzo(b,e)(1,4)diazepin-11-one13450-72-1C18H21N3O
- N-(4-Methylphenyl)-4-phenylpiperazine-1-carboxamide710312-05-3C18H21N3O
- 1-Ethyl-3-[2-(3-methylphenoxy)ethyl]-1,3-dihydro-2H-benzimidazol-2-imine487014-83-5C18H21N3O
- N-Methyl-N,4-diphenylpiperazine-1-carboxamide470716-25-7C18H21N3O
- 1H-Pyrazole, 4-(2-(2-((2R)-2-methyl-1-pyrrolidinyl)ethyl)-5-benzofuranyl)-460748-95-2C18H21N3O
- N-[(2-Methoxyphenyl)methyl]-1-propan-2-ylbenzimidazol-5-amine914354-34-0C18H21N3O
- 3-{[2-(1-Cyclohexenyl)ethyl]amino}-1-phenyl-2(1H)-pyrazinone895120-50-0C18H21N3O
- (2S)-1-[4-Methyl-2-(3-phenylpropyl)-1,3-oxazol-5-yl]pyrrolidine-2-carbonitrile3006795-68-9C18H21N3O
- Piperazine, 1-[(6-methyl-3-pyridinyl)carbonyl]-4-(phenylmethyl)-613660-66-5C18H21N3O
- 6-(2-Ethoxy-phenyl)-1,4,5,7-tetramethyl-6H-pyrrolo[3,4-d]pyridazine647845-59-8C18H21N3O
- (1)Benzoxepino(3,4-b)pyridine, 5,11-dihydro-5-(4-methyl-1-piperazinyl)-95968-30-2C18H21N3O
- 1-(3-Amino-10,11-dihydro-dibenzo[b,f]azepin-5-yl)-2-dimethylamino-ethanone102821-91-0C18H21N3O
- 4-(2-Phenylethyl)piperazinyl 3-pyridyl ketone830342-65-9C18H21N3O
- (2E)-2-(3-Methyl-1,1-diphenyl-2-butanylidene)hydrazinecarboxamide7475-73-2C18H21N3O
- 8-Benzyloxy-3-dimethylaminomethyl-2-methylimidazo[1,2-a]pyridine79707-24-7C18H21N3O
- (4-Methylpiperazin-1-yl)[2-(phenylamino)phenyl]methanone1354281-66-5C18H21N3O
- 1 suppliersOxadimedine16485-05-5C18H21N3O
- {4-[4-(4-Methylbenzoyl)piperazin-1-yl]phenyl}amine262376-01-2C18H21N3O
- 8-(2,5-Dimethylbenzyl)-2,4-dimethyl-5,6-dihydropyrido[2,3-d]pyrimidin-7(8H)-one1340932-94-6C18H21N3O
- Imidazo(4,5,1-jk)(1,4)benzodiazepin-2(1H)-one, 8-ethynyl-4,5,6,7-tetrahydro-5-methyl-6-(3-methyl-2-butenyl)-257891-51-3C18H21N3O
- 4-Methoxy-N-(2-methyl-2-phenylpropyl)-1H-indazol-3-amine929022-54-8C18H21N3O
- 1-(1-(4-Aminopyridin-2-yl)-4-phenylpiperidin-4-yl)ethanone1146514-70-6C18H21N3O
- N-[3-Cyano-4,5-dimethyl-1-(2,4,6-trimethyl-phenyl)-1H-pyrrol-2-yl]-acetamide157286-83-4C18H21N3O
- Piperazine, 1-(phenylacetyl)-4-(3-pyridinylmethyl)-89007-22-7C18H21N3O
- {4-[4-(2-Methylbenzoyl)piperazin-1-yl]phenyl}amine640759-17-7C18H21N3O
- 4-tert-Butyl-N'-(1-pyridin-2-ylethylidene)benzohydrazide109352-37-6C18H21N3O
- Etofuradine17692-35-2C18H21N3O
- N-(2-Methylphenyl)-4-phenylpiperazine-1-carboxamide774194-67-1C18H21N3O
- Benzamide,N-[(4-phenyl-2-piperazinyl)methyl]-138286-68-7C18H21N3O
- 4-(4-Benzylpiperazin-1-yl)benzamide128263-67-2C18H21N3O
- 1-tert-Butyl-4-(1-prop-2-ynylbenzimidazol-2-yl)pyrrolidin-2-one876888-66-3C18H21N3O
- Imidafenacin metabolite M10503598-33-2C18H21N3O
- [4-[(2-Methylphenyl)methyl]piperazin-1-yl]-pyridin-4-ylmethanone354535-61-8C18H21N3O
- [4-(4-Methylbenzyl)piperazin-1-yl](pyridin-4-yl)methanone354535-79-8C18H21N3O
- [4-[(4-Methylphenyl)methyl]piperazin-1-yl]-pyridin-3-ylmethanone354536-01-9C18H21N3O
- 5-HT3 antagonist 2128199-93-9C18H21N3O
- 1 suppliers2-(4-Aminophenyl)-1-(4-phenylpiperazin-1-yl)ethan-1-one1016528-63-4C18H21N3O
- N-(3-Methylphenyl)-4-phenyl-1-piperazinecarboxamide85867-78-3C18H21N3O
- 4-Methyl-N,N-diphenylpiperazine-1-carboxamide20128-02-3C18H21N3O
- N-(1-Benzylpyrrolidin-3-yl)-N'-phenylcarbamimidic acid19985-24-1C18H21N3O
- [4-[(3-Methylphenyl)methyl]piperazin-1-yl]-pyridin-4-ylmethanone425390-07-4C18H21N3O
- N-(4-Ethoxyphenyl)-1-isopropyl-1H-benzo[d]imidazol-2-amine631843-10-2C18H21N3O
- 1-(4-Methoxybenzyl)-2,5,6-trimethyl-1H-1,3-benzimidazol-4-amine338955-09-2C18H21N3O
- 1-Cyclohexyl-N-(furan-2-ylmethyl)benzimidazol-5-amine831246-75-4C18H21N3O
- N-Methyl-3-((1-(phenylmethyl)-1H-indazol-3-yl)oxy)-1-propanamine32852-16-7C18H21N3O
- N'-(1-Methylpyrrolidin-3-yl)-N,N-diphenylcarbamimidic acid19985-21-8C18H21N3O
- Phenoxazin-5-ium, 3,7-bis(ethylamino)-2,8-dimethyl-, perchlorate48193-79-9C18H21N3O
- 1-(Cyclopropylmethyl)-4-[1-(prop-2-en-1-yl)-1H-1,3-benzodiazol-2-yl]pyrrolidin-2-one912890-46-1C18H21N3O
- N-{2-Phenyl-2H,4H,5H,6H-cyclopenta[c]pyrazol-3-yl}cyclopentanecarboxamide1043104-08-0C18H21N3O
- N-(4-Butoxybenzyl)-1H-indazol-5-amine864423-62-1C18H21N3O
- 5H-Dibenzo(b,e)(1,4)diazepin-11-one, 10,11-dihydro-10-(2-(dimethylamino)ethyl)-8-methyl-1668-68-4C18H21N3O
Frequently asked questions
What is the molar mass of C18H21N3O?
The molar mass of C18H21N3O is 295.39 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 295.1685 Da.
How many compounds have the formula C18H21N3O?
CompoundList lists 285 compounds with the molecular formula C18H21N3O, including Dibenzepin, 2-[1-(4-Phenyl-piperazin-1-ylimino)-ethyl]-phenol, N'-[4-(Diethylamino)benzylidene]benzohydrazide. 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 C18H21N3O?
C18H21N3O 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.