Molecular formula
C18H21N3O2
434 compounds have this formula on CompoundList.
- Molar mass
- 311.38g/mol
- Monoisotopic mass
- 311.1634Da
- Atoms
- 44
- Elements
- 4
- Rings plus double bonds
- 10
The formula C18H21N3O2 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 2 oxygen 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 × 1869.43%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.80%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 313.49%14.007 × 3 = 42.021 g/mol
- O Oxygen × 210.28%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C18H21N3O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 434 compounds
Gsk-9089
CAS 95167-41-2C18H21N3O2
1-Benzyl-N-(2-nitrophenyl)piperidin-4-amine
CAS 7255-89-2C18H21N3O2
1H-Benz(de)isoquinoline-1,3(2H)-dione, 5-amino-2-(2-(diethylamino)ethyl)-
CAS 69408-82-8C18H21N3O2
2(1H)-Pyridinone, 3-(((4,7-dimethyl-2-benzoxazolyl)methyl)amino)-5-ethyl-6-methyl-
CAS 135525-77-8C18H21N3O2
![N'-{(E)-[4-(dimethylamino)phenyl]methylidene}-2-(3-methylphenoxy)acetohydrazide chemical structure, C18H21N3O2, CAS 95167-39-8](/s/PFVRSUIRLIOBGD-XDHOZWIPSA-N.svg)
N'-{(E)-[4-(dimethylamino)phenyl]methylidene}-2-(3-methylphenoxy)acetohydrazide
CAS 95167-39-8C18H21N3O2
Phenylalanylphenylalanylamide
CAS 15893-46-6C18H21N3O2
![N-[4-[[(3,4-Dimethylanilino)-oxomethyl]amino]phenyl]-N-methylacetamide chemical structure, C18H21N3O2, CAS 502138-39-8](/s/XHDCZQFZTVJPFF-UHFFFAOYSA-N.svg)
N-[4-[[(3,4-Dimethylanilino)-oxomethyl]amino]phenyl]-N-methylacetamide
CAS 502138-39-8C18H21N3O2
![N-{4-[(3-Methyl-1H-pyrazol-1-yl)carbonyl]phenyl}cyclohexanecarboxamide chemical structure, C18H21N3O2, CAS 511517-49-0](/s/XMZWMRWRPXRDHL-UHFFFAOYSA-N.svg)
N-{4-[(3-Methyl-1H-pyrazol-1-yl)carbonyl]phenyl}cyclohexanecarboxamide
CAS 511517-49-0C18H21N3O2
Lysergic acid alpha-hydroxyethylamide
CAS 3343-15-5C18H21N3O2
N-(4-Methoxyphenyl)-2-pyridin-3-ylpiperidine-1-carboxamide
CAS 376384-90-6C18H21N3O2
![Phenyl N-[4-(4-methylpiperazin-1-yl)phenyl]carbamate chemical structure, C18H21N3O2, CAS 439110-77-7](/s/PKYRNWZXBAGHSM-UHFFFAOYSA-N.svg)
Phenyl N-[4-(4-methylpiperazin-1-yl)phenyl]carbamate
CAS 439110-77-7C18H21N3O2
4-(Pentanoylamino)-N-(pyridin-4-ylmethyl)benzamide
CAS 663185-11-3C18H21N3O2
![N-[3-Methyl-1-oxo-1-(pyridin-2-ylmethylamino)butan-2-yl]benzamide chemical structure, C18H21N3O2, CAS 1022917-57-2](/s/MALUHLIJGCIEHU-UHFFFAOYSA-N.svg)
N-[3-Methyl-1-oxo-1-(pyridin-2-ylmethylamino)butan-2-yl]benzamide
CAS 1022917-57-2C18H21N3O2
N-(4-Phenoxyphenyl)-2-(piperazin-1-yl)acetamide
CAS 725690-25-5C18H21N3O2
2-Nitro-N-(1-phenylethyl)-5-pyrrolidin-1-ylaniline
CAS 347355-81-1C18H21N3O2
![6-(3,4-Dimethoxyphenyl)-1,4,5,7-tetramethyl-6H-pyrrolo[3,4-d]pyridazine chemical structure, C18H21N3O2, CAS 461430-15-9](/s/UXIXVNMARWQRED-UHFFFAOYSA-N.svg)
6-(3,4-Dimethoxyphenyl)-1,4,5,7-tetramethyl-6H-pyrrolo[3,4-d]pyridazine
CAS 461430-15-9C18H21N3O2
2-Cyano-N-cyclohexyl-3-(4-acetamidophenyl)prop-2-enamide
CAS 722473-04-3C18H21N3O2
N'-(4-(Diethylamino)benzylidene)-2-hydroxybenzohydrazide
CAS 301326-98-7C18H21N3O2
Benzyl 4-(4-aminophenyl)piperazine-1-carboxylate
CAS 947673-12-3C18H21N3O2
![2-[Methyl-[(4-methylphenyl)carbamoyl]amino]-N-(4-methylphenyl)acetamide chemical structure, C18H21N3O2, CAS 731816-55-0](/s/IHGOBGGHUSCPKD-UHFFFAOYSA-N.svg)
2-[Methyl-[(4-methylphenyl)carbamoyl]amino]-N-(4-methylphenyl)acetamide
CAS 731816-55-0C18H21N3O2
N-(4-Methoxyphenyl)-2-piperidin-1-ylpyridine-3-carboxamide
CAS 633280-87-2C18H21N3O2
![N-[2-[1-(2-Methylpropyl)benzimidazol-2-yl]ethyl]furan-2-carboxamide chemical structure, C18H21N3O2, CAS 871547-57-8](/s/PURFCJAIWNHOHA-UHFFFAOYSA-N.svg)
N-[2-[1-(2-Methylpropyl)benzimidazol-2-yl]ethyl]furan-2-carboxamide
CAS 871547-57-8C18H21N3O2
![N-[(3R)-1-Azabicyclo[2.2.2]octan-3-yl]-2-(1-methyl-3-indolyl)-2-oxoacetamide chemical structure, C18H21N3O2, CAS 143137-37-5](/s/ZNAPADWWBWFMCQ-HNNXBMFYSA-N.svg)
N-[(3R)-1-Azabicyclo[2.2.2]octan-3-yl]-2-(1-methyl-3-indolyl)-2-oxoacetamide
CAS 143137-37-5C18H21N3O2
2-(4-Methoxyphenyl)-1-(4-pyridin-2-ylpiperazin-1-yl)ethanone
CAS 371137-18-7C18H21N3O2
- (E)-N'-(4-(Dimethylamino)benzylidene)-2-(p-tolyloxy)acetohydrazide93995-90-5C18H21N3O2
- N-[3-({[3-(Acetylamino)benzyl]amino}methyl)phenyl]acetamide866155-44-4C18H21N3O2
- 3-[(3,5-Dimethylpyrazol-1-yl)methyl]-1-(4-ethylphenyl)pyrrolidine-2,5-dione955857-98-4C18H21N3O2
- 1-Ethyl-3-[2-(4-methoxyphenoxy)ethyl]benzimidazol-2-imine487015-82-7C18H21N3O2
- 5-Methoxy-2-[[(1-propan-2-ylbenzimidazol-2-yl)amino]methyl]phenol692267-91-7C18H21N3O2
- 2-Methoxy-6-[[(1-propan-2-ylbenzimidazol-2-yl)amino]methyl]phenol692271-51-5C18H21N3O2
- Methyl 3-amino-4-(4-phenylpiperazin-1-yl)benzoate65639-65-8C18H21N3O2
- 2-(3-Methyl-butyl)-6,7,8,9-tetrahydro-2H-11-oxa-2,4,10-triaza-benzo[b]fluoren-1-one899392-48-4C18H21N3O2
- N-[6-[4-(Diethylamino)phenyl]imino-3-oxocyclohexa-1,4-dien-1-yl]acetamide3743-39-3C18H21N3O2
- 1-(4-(N-Methylacetamido)phenyl)-3-(2,6-xylyl)urea76393-33-4C18H21N3O2
- 2-Cyano-N-(2-(4-morpholinyl)ethyl)-5-phenyl-2,4-pentadienamide493030-60-7C18H21N3O2
- 2-(2,2-Dimethylpropanoylamino)-N-(6-methylpyridin-2-yl)benzamide626205-98-9C18H21N3O2
- N-(2-Methylpropyl)-2-(phenylcarbamoylamino)benzamide663166-13-0C18H21N3O2
- 4-(Cyclohexylcarbonyl)-N-(4-pyridinylmethyl)-1H-pyrrole-2-carboxamide691858-12-5C18H21N3O2
- 3-(4-Propan-2-yloxyphenyl)-N-[(E)-pyridin-4-ylmethylideneamino]propanamide373368-39-9C18H21N3O2
- 2-[2-(3,4-Dimethoxyphenyl)ethylamino]-4,6-dimethylpyridine-3-carbonitrile904005-05-6C18H21N3O2
- 5-Methyl-3-phenylisoxazol-4-yl 4-prop-2-enylpiperazinyl ketone915898-51-0C18H21N3O2
- 2-Benzoyl-2-tert-butyl-N-phenylhydrazinecarboxamide403739-76-4C18H21N3O2
- 1-{5-[(4-Phenylpiperazino)carbonyl]-1H-pyrrol-3-yl}-1-propanone303995-87-1C18H21N3O2
- (3,4-Dimethoxy-benzyl)-(1,2-dimethyl-1H-benzoimidazol-5-yl)-amine337925-60-7C18H21N3O2
- 1-Benzyl-4-(4-nitrobenzyl)piperazine148120-37-0C18H21N3O2
- (E)-4-(((4-Benzylpiperazin-1-yl)imino)methyl)benzene-1,2-diol497078-03-2C18H21N3O2
- 2-Phenoxy-1-[4-(pyridin-2-ylmethyl)piperazin-1-yl]ethanone442651-50-5C18H21N3O2
- 4-(4-Methoxyphenyl)-N-phenylpiperazine-1-carboxamide401640-99-1C18H21N3O2
- 2-(4-Ethoxyanilino)-N'-(1-phenylethylidene)acetohydrazide303084-70-0C18H21N3O2
- 2-(4-Methoxyanilino)-N'-(1-(4-methylphenyl)ethylidene)acetohydrazide302910-46-9C18H21N3O2
- (4-Methoxyphenyl)-[4-(pyridin-4-ylmethyl)piperazin-1-yl]methanone355392-93-7C18H21N3O2
- N-(8-Methyl-8-azabicyclo(3.2.1)oct-3-yl)-4-hydroxy-3-quinolinecarboxamide145970-12-3C18H21N3O2
- 1-(3,5-Dimethylphenyl)-3-[(3,5-dimethylpyrazol-1-yl)methyl]pyrrolidine-2,5-dione944783-04-4C18H21N3O2
- (3-Methoxyphenyl)-[4-(pyridin-4-ylmethyl)piperazin-1-yl]methanone354535-91-4C18H21N3O2
- 1-(1,3-Benzodioxol-5-ylmethyl)-4-(pyridin-3-ylmethyl)piperazine414875-53-9C18H21N3O2
- 1',5,7-Trimethyl-6H-spiro[1,3-diazatricyclo[3.3.1.1~3,7~]decane-2,3'-indole]-2',6(1'H)-dione211917-28-1C18H21N3O2
- Carnequinazoline A1175962-86-3C18H21N3O2
- N-Cyclopentyl-2-[3-(4-methylphenyl)-6-oxopyridazin-1-yl]acetamide898220-98-9C18H21N3O2
- RS 56812143137-35-3C18H21N3O2
- 1-Benzyl-4-[(3-nitrophenyl)methyl]piperazine414892-09-4C18H21N3O2
- 5-[(4-Methoxy-benzylamino)-methyl]-1,3-dimethyl-1,3-dihydro-benzoimidazol-2-one881442-86-0C18H21N3O2
- N-(3-Ethylphenyl)-2-(3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)acetamide933028-00-3C18H21N3O2
- 2-Adamantanyl-N-isoxazolo[5,4-b]pyridin-3-ylacetamide1105245-05-3C18H21N3O2
- 1-Benzyl-4-[(2-nitrophenyl)methyl]piperazine414874-99-0C18H21N3O2
- (2-Methoxyphenyl)-[4-(pyridin-4-ylmethyl)piperazin-1-yl]methanone353772-87-9C18H21N3O2
- 2(1H)-Pyridinone, 5-ethyl-3-(((7-ethyl-2-benzoxazolyl)methyl)amino)-6-methyl-143708-04-7C18H21N3O2
- Benzenamine, N-[[4-(diethylamino)phenyl]methylene]-2-methyl-4-nitro-247218-11-7C18H21N3O2
- (4-Methoxyphenyl)-[4-(pyridin-2-ylmethyl)piperazin-1-yl]methanone441743-72-2C18H21N3O2
- 2-(2-Isopropyl-5-methylphenoxy)-N'-(3-pyridinylmethylene)acetohydrazide339228-94-3C18H21N3O2
- 4-(Pentanoylamino)-N-(pyridin-3-ylmethyl)benzamide663184-06-3C18H21N3O2
- 2-(6-Methyl-3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)-N-(o-tolyl)acetamide933238-37-0C18H21N3O2
- Cambridge id 66579616657-96-1C18H21N3O2
- Hexanediamide, N-(2-aminophenyl)-N'-phenyl-537034-16-5C18H21N3O2
- N'-[4-(Diethylamino)-2-hydroxybenzylidene]benzohydrazide1354511-44-6C18H21N3O2
- Benzenamine, 4-[2-(2,3-dihydro-1,4-benzodioxin-6-yl)diazenyl]-N,N-diethyl-218150-99-3C18H21N3O2
- 2-(6-Methyl-3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)-N-(p-tolyl)acetamide933238-43-8C18H21N3O2
- N-(2,6-Dimethylphenyl)-2-(3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)acetamide933027-82-8C18H21N3O2
- 1-(4-Morpholinophenyl)-3-(p-tolyl)urea749890-66-2C18H21N3O2
- N-(3-Methoxyphenyl)-4-phenylpiperazine-1-carboxamide897330-74-4C18H21N3O2
- N-(2-Morpholino-2-(pyridin-3-yl)ethyl)benzamide862827-17-6C18H21N3O2
- (S)-8-((2-Amino-4-methylpentyl)oxy)benzo[c][2,7]naphthyridin-5(6H)-one1551401-20-7C18H21N3O2
- 6-(4-Benzylpiperidine-1-carbonyl)-2-methylpyridazin-3(2H)-one1049512-19-7C18H21N3O2
- Uracil, 5-(diallylamino)-3,6-dimethyl-1-phenyl-32150-62-2C18H21N3O2
- 6-(3,4-Dimethylphenyl)-2-(2-oxo-2-pyrrolidin-1-ylethyl)pyridazin-3-one899990-89-7C18H21N3O2
- 2-[4-(4-Hydroxyphenyl)piperazin-1-yl]-N-phenylacetamide923736-85-0C18H21N3O2
- N-[[4-(1-Oxidopyridin-1-ium-2-yl)piperidin-1-yl]methyl]benzamide630121-45-8C18H21N3O2
- (3-(3-Benzyl-1,2,4-oxadiazol-5-yl)azetidin-1-yl)(cyclopentyl)methanone1396885-83-8C18H21N3O2
- N-(2-Methoxyphenyl)-4-phenylpiperazine-1-carboxamide881987-96-8C18H21N3O2
- 3-(3-Imidazol-1-ylmethyl-2-isopropyl-indol-1-yl)-propionic acid76894-78-5C18H21N3O2
- 2-Benzyloxy-1-(4-pyridin-2-yl-piperazin-1-yl)-ethanone945422-00-4C18H21N3O2
- {4-[4-(4-Methoxybenzoyl)piperazin-1-yl]phenyl}amine262376-00-1C18H21N3O2
- Piperazine, 1-(2-ethoxyphenyl)-4-(3-pyridinylcarbonyl)-124444-76-4C18H21N3O2
- N-{1-[1-(2-Methylpropyl)-1H-1,3-benzodiazol-2-yl]ethyl}furan-2-carboxamide919972-32-0C18H21N3O2
- N-[(1-Butylbenzimidazol-2-yl)ethyl]-2-furylcarboxamide919972-38-6C18H21N3O2
- tert-Butyl 2-phenyl-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate300552-47-0C18H21N3O2
- tert-Butyl 2-phenyl-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate1279816-05-5C18H21N3O2
- N,N'-Bis(2-hydroxy-benzylidene)-3-azapentane-1,5-diamine2851-60-7C18H21N3O2
- 2-Azido-4-[4-(4-hydroxyphenyl)hexan-3-yl]phenol41172-50-3C18H21N3O2
- 2-[4-Methoxy-2-(pentyloxy)phenyl]-3H-imidazo[4,5-c]pyridine89090-06-2C18H21N3O2
- [4-(3-Methoxybenzyl)piperazin-1-yl](pyridin-3-yl)methanone354535-92-5C18H21N3O2
Frequently asked questions
What is the molar mass of C18H21N3O2?
The molar mass of C18H21N3O2 is 311.38 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 311.1634 Da.
How many compounds have the formula C18H21N3O2?
CompoundList lists 434 compounds with the molecular formula C18H21N3O2, including Gsk-9089, 1-Benzyl-N-(2-nitrophenyl)piperidin-4-amine, 1H-Benz(de)isoquinoline-1,3(2H)-dione, 5-amino-2-(2-(diethylamino)ethyl)-. 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 C18H21N3O2?
C18H21N3O2 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.