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 201 to 300 of 434 compounds
N-Cyclohexyl-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide
CAS 923100-40-7C18H21N3O2
N-Cyclopentyl-2-(6-oxo-3-(o-tolyl)pyridazin-1(6H)-yl)acetamide
CAS 923091-74-1C18H21N3O2
6-(2-Methylphenyl)-2-(2-oxo-2-piperidin-1-ylethyl)pyridazin-3-one
CAS 899968-33-3C18H21N3O2
6-(2,5-Dimethylphenyl)-2-(2-oxo-2-pyrrolidin-1-ylethyl)pyridazin-3-one
CAS 941883-71-2C18H21N3O2
![4-Isoquinolinecarbonitrile, 5-[[1-(3-hydroxypropyl)-4-piperidinyl]oxy]- chemical structure, C18H21N3O2, CAS 651308-68-8](/s/XTLVLLIEEPZTSB-UHFFFAOYSA-N.svg)
4-Isoquinolinecarbonitrile, 5-[[1-(3-hydroxypropyl)-4-piperidinyl]oxy]-
CAS 651308-68-8C18H21N3O2
N-(3-Amino-4-methylphenyl)-3-morpholinobenzamide
CAS 250681-53-9C18H21N3O2
![6-[2-(1H-Imidazol-1-yl)-3-methyl-1H-indol-1-yl]hexanoic acid chemical structure, C18H21N3O2, CAS 90834-04-1](/s/MGEMQDPIZUQSDI-UHFFFAOYSA-N.svg)
6-[2-(1H-Imidazol-1-yl)-3-methyl-1H-indol-1-yl]hexanoic acid
CAS 90834-04-1C18H21N3O2
N-(2-(6-Oxo-3-phenylpyridazin-1(6H)-yl)ethyl)cyclopentanecarboxamide
CAS 921872-88-0C18H21N3O2
![N-tert-Butyl-3-[(phenylcarbamoyl)amino]benzamide chemical structure, C18H21N3O2, CAS 1030431-77-6](/s/AEUBOHBPZXIFOI-UHFFFAOYSA-N.svg)
N-tert-Butyl-3-[(phenylcarbamoyl)amino]benzamide
CAS 1030431-77-6C18H21N3O2
N-(3-(6-Oxo-3-(p-tolyl)pyridazin-1(6H)-yl)propyl)cyclopropanecarboxamide
CAS 1021090-86-7C18H21N3O2
2-(1-Oxo-1-(pyrrolidin-1-yl)propan-2-yl)-6-(p-tolyl)pyridazin-3(2H)-one
CAS 1202999-06-1C18H21N3O2
3-(2-(3,4-Dihydroisoquinolin-2(1H)-yl)-2-oxoethyl)-6-propylpyrimidin-4(3H)-one
CAS 1209417-50-4C18H21N3O2
2-(2-(4-Benzylpiperidin-1-yl)-2-oxoethyl)pyridazin-3(2H)-one
CAS 1211291-28-9C18H21N3O2
2-(2-Methyl-4-oxo-3,4,5,6,7,8-hexahydroquinazolin-3-yl)-N-(3-methylphenyl)acetamide
CAS 1251670-70-8C18H21N3O2
2-(2-Methyl-4-oxo-5,6,7,8-tetrahydroquinazolin-3(4H)-yl)-N-(p-tolyl)acetamide
CAS 1251604-72-4C18H21N3O2
3-Amino-4-(4-o-tolylpiperazin-1-yl)benzoic acid
CAS 1284942-19-3C18H21N3O2
N-(1-Cyanocyclobutyl)-1-(2-methoxyethyl)-N-methyl-1H-indole-3-carboxamide
CAS 1281140-42-8C18H21N3O2
4-Quinoxalin-6-yl-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester
CAS 1093065-07-6C18H21N3O2
1-(4-(2-(4-Aminophenoxy)pyridin-3-yl)piperidin-1-yl)ethanone
CAS 1231926-05-8C18H21N3O2
2-Amino-6-(4-morpholinylmethyl)-N-phenylBenzamide
CAS 870280-78-7C18H21N3O2
![2-[(2-Phenylmorpholin-4-yl)methyl]-2,5,6,7-tetrahydro-3H-cyclopenta[c]pyridazin-3-one chemical structure, C18H21N3O2, CAS 1374523-67-7](/s/HYHPAMSMAKNHMK-UHFFFAOYSA-N.svg)
2-[(2-Phenylmorpholin-4-yl)methyl]-2,5,6,7-tetrahydro-3H-cyclopenta[c]pyridazin-3-one
CAS 1374523-67-7C18H21N3O2
![Acetic acid 4-[4-(4-amino-phenyl)-piperazin-1-yl]-phenyl ester chemical structure, C18H21N3O2, CAS 1197458-92-6](/s/MNBSTKZBQBRJGC-UHFFFAOYSA-N.svg)
Acetic acid 4-[4-(4-amino-phenyl)-piperazin-1-yl]-phenyl ester
CAS 1197458-92-6C18H21N3O2
![1-(2-Methoxyethyl)-N-[(1-methyl-1H-pyrrol-2-yl)methyl]-1H-indole-2-carboxamide chemical structure, C18H21N3O2, CAS 1435906-34-5](/s/BDLMEGVJVRNCFF-UHFFFAOYSA-N.svg)
1-(2-Methoxyethyl)-N-[(1-methyl-1H-pyrrol-2-yl)methyl]-1H-indole-2-carboxamide
CAS 1435906-34-5C18H21N3O2
![1-(2-Methoxyethyl)-N-[(1-methyl-1H-pyrrol-2-yl)methyl]-1H-indole-3-carboxamide chemical structure, C18H21N3O2, CAS 1401559-65-6](/s/ITAJRZLMNVQVBM-UHFFFAOYSA-N.svg)
1-(2-Methoxyethyl)-N-[(1-methyl-1H-pyrrol-2-yl)methyl]-1H-indole-3-carboxamide
CAS 1401559-65-6C18H21N3O2
- 2-((1-(Cyclohex-3-enecarbonyl)piperidin-4-yl)oxy)nicotinonitrile1797225-01-4C18H21N3O2
- 1-(4-(3-Methoxypyrrolidin-1-yl)phenyl)-3-phenylurea1797344-71-8C18H21N3O2
- N-(1-Cyano-1-cyclopropylethyl)-2-[(8-oxo-6,7-dihydro-5H-naphthalen-2-yl)amino]acetamide1436296-82-0C18H21N3O2
- 1-(7,8-Dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)-3-(2-ethoxyphenyl)propan-1-one1796946-56-9C18H21N3O2
- N-(1-Cyano-1-methyl-3-phenylpropyl)-5-(propan-2-yl)-1,3-oxazole-4-carboxamide1444596-04-6C18H21N3O2
- N-(1-((Tetrahydro-2H-pyran-4-yl)methyl)-1H-pyrazol-4-yl)cinnamamide1799264-60-0C18H21N3O2
- N-[2-[(1-Cyanocyclobutyl)-methylamino]-2-oxoethyl]-2,3-dihydro-1H-indene-5-carboxamide1645521-80-7C18H21N3O2
- 1-(4-(Quinoxalin-2-yloxy)piperidin-1-yl)pent-4-en-1-one1704601-00-2C18H21N3O2
- 1-Methyl-2-oxo-N-[(1-phenylpyrrolidin-2-yl)methyl]-1,2-dihydropyridine-3-carboxamide1705196-42-4C18H21N3O2
- (E)-3-(Furan-3-yl)-N-((1-(pyridin-3-yl)piperidin-4-yl)methyl)acrylamide2034890-08-7C18H21N3O2
- 2-(Pyridin-3-yl)-N-[(1r,4r)-4-(pyridin-2-yloxy)cyclohexyl]acetamide2034436-96-7C18H21N3O2
- 4-Methyl-N-[(1r,4r)-4-(pyrimidin-2-yloxy)cyclohexyl]benzamide2034444-30-7C18H21N3O2
- 1-(3-(Pyrazin-2-yloxy)pyrrolidin-1-yl)-3-(m-tolyl)propan-1-one2034251-47-1C18H21N3O2
- 1-(3-(Pyridazin-3-yloxy)pyrrolidin-1-yl)-3-(m-tolyl)propan-1-one2034209-96-4C18H21N3O2
- 1-(3-((6-Methylpyridazin-3-yl)oxy)pyrrolidin-1-yl)-2-(m-tolyl)ethanone2034580-88-4C18H21N3O2
- 1-{3-[(6-Methylpyridazin-3-yl)oxy]pyrrolidin-1-yl}-3-phenylpropan-1-one2034580-91-9C18H21N3O2
- 3-Phenyl-1-(3-(pyridazin-3-yloxy)piperidin-1-yl)propan-1-one2034583-26-9C18H21N3O2
- 1-(3-(Pyrazin-2-yloxy)piperidin-1-yl)-2-(m-tolyl)ethanone2034440-67-8C18H21N3O2
- (6-Methoxy-3,4-dihydroisoquinolin-2(1H)-yl)(4,5,6,7-tetrahydro-1H-benzo[d]imidazol-5-yl)methanone2034483-28-6C18H21N3O2
- 1-(Cyclopropylcarbonyl)-4-[(3-phenyl-1,2,4-oxadiazol-5-yl)methyl]piperidine1775325-95-5C18H21N3O2
- (E)-3-(Furan-2-yl)-N-((1-(pyridin-4-yl)piperidin-4-yl)methyl)acrylamide2035001-80-8C18H21N3O2
- 4-Phenyl-N-(2-(pyrimidin-5-yl)ethyl)tetrahydro-2H-pyran-4-carboxamide2034511-94-7C18H21N3O2
- 2-(Cyclopentyloxy)-N-(2-(pyridin-4-yl)ethyl)isonicotinamide2034298-99-0C18H21N3O2
- 1-(3-((4,6-Dimethylpyrimidin-2-yl)oxy)pyrrolidin-1-yl)-2-phenylethanone2034620-46-5C18H21N3O2
- (6,7-Dihydropyrazolo[1,5-a]pyrazin-5(4H)-yl)(4-phenyltetrahydro-2H-pyran-4-yl)methanone2034400-58-1C18H21N3O2
- (3-(Dimethylamino)phenyl)(3-(pyridin-4-yloxy)pyrrolidin-1-yl)methanone2034249-59-5C18H21N3O2
- (4-(1-Methyl-1H-pyrazol-4-yl)-3,4-dihydroisoquinolin-2(1H)-yl)(tetrahydrofuran-2-yl)methanone2034463-55-1C18H21N3O2
- N-(2-(5,6,7,8-Tetrahydroimidazo[1,2-a]pyridin-2-yl)phenyl)tetrahydrofuran-3-carboxamide2034567-97-8C18H21N3O2
- 1-(3-(Pyrimidin-2-yloxy)pyrrolidin-1-yl)-3-(m-tolyl)propan-1-one2034302-26-4C18H21N3O2
- 2-(3-Cyclopropyl-6-oxopyridazin-1(6H)-yl)-N-(3-phenylpropyl)acetamide2034267-90-6C18H21N3O2
- 1-Cyclopentyl-4-(2-methoxyphenyl)-4,5-dihydro-1H-pyrazolo[3,4-b]pyridin-6(7H)-one1310940-46-5C18H21N3O2
- 1-Cyclopentyl-4-(3-methoxyphenyl)-4,5-dihydro-1H-pyrazolo[3,4-b]pyridin-6(7H)-one1310936-65-2C18H21N3O2
- N-(2-Cyano-1,2,3,4-tetrahydronaphthalen-2-yl)-1-ethyl-5-oxopyrrolidine-3-carboxamide2176645-08-0C18H21N3O2
- N-(1-Cyanocyclohexyl)-3,3-dimethyl-2-oxo-1H-indole-6-carboxamide2126538-00-7C18H21N3O2
- [(Z)-[1-Methoxy-1-(4-phenylphenyl)butan-2-ylidene]amino]urea7462-34-2C18H21N3O2
- N1-[(2,4-Dimethylphenyl)methyl]-N2-[2-(2-pyridinyl)ethyl]ethanediamide851670-23-0C18H21N3O2
- Phenol, 4-[[5-(1,7-diazaspiro[4.4]non-7-yl)-3-pyridinyl]oxy]-646056-12-4C18H21N3O2
- N-(1-Cyanocyclohexyl)-2-(2-cyanophenoxy)-N-methylpropanamide940739-84-4C18H21N3O2
- 1-[6-(4-Ethylphenyl)-3-pyridazinyl]-3-piperidinecarboxylic acid1017117-63-3C18H21N3O2
- N-Cyclopropyl-4-oxo-4-(1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)butanamide1071913-85-3C18H21N3O2
- 1-[4-(1H-Indol-2-ylcarbonyl)piperazin-1-yl]-3-methylbut-2-en-1-one1010903-72-6C18H21N3O2
- 3-(2-(Azepan-1-yl)-2-oxoethyl)-6-phenylpyrimidin-4(3H)-one1211243-79-6C18H21N3O2
- 2-(Methoxymethyl)-3-(4-methylphenyl)-5-propylpyrazolo[1,5-a]pyrimidin-7(4H)-one1269014-71-2C18H21N3O2
- 6-Ethyl-2-(methoxymethyl)-5-methyl-3-(4-methylphenyl)pyrazolo[1,5-a]pyrimidin-7(4H)-one1269004-74-1C18H21N3O2
- 4-[(E)-2-(2,4-Dimethoxyphenyl)ethenyl]-2-(pyrrolidin-1-yl)pyrimidine1309348-44-4C18H21N3O2
- N-[1-(1H-Indol-2-ylcarbonyl)piperidin-4-yl]cyclopropanecarboxamide1282103-34-7C18H21N3O2
- N-[1-(1H-Indol-3-ylcarbonyl)piperidin-4-yl]cyclopropanecarboxamide1282132-76-6C18H21N3O2
- 4-(Adamantan-1-ylamino)-1H-pyrrolo[2,3-b]pyridine-5-carboxylic acid944123-04-0C18H21N3O2
- (1S,2R)-1-(5-Methoxy-1H-pyrrolo[2,3-c]pyridin-1-yl)-3-(methylamino)-1-phenylpropan-2-ol930837-45-9C18H21N3O2
- Benzyl 4-[(pyridin-4-yl)methyl]piperazine-1-carboxylate918480-92-9C18H21N3O2
- Ethyl 2-(3,4-dihydroisoquinolin-2(1H)-yl)-4,6-dimethylpyrimidine-5-carboxylate1093352-34-1C18H21N3O2
- tert-Butyl 6-(pyrimidin-2-yl)-3,4-dihydroisoquinoline-2(1H)-carboxylate1824209-03-1C18H21N3O2
- N-Cyclopropyl-4-oxazol-5-yl-N-piperidin-4-yl-benzamide1400706-57-1C18H21N3O2
- 4-Hydroxy-2-(1-isobutyl-pyrazol-4-yl)-7-methoxy-8-methyl-quinoline1108659-96-6C18H21N3O2
- (S)-2-Amino-N1-benzhydrylpentanediamide2429878-52-2C18H21N3O2
- 3'-{[Glycyl(methyl)amino]methyl}-N-methyl[1,1'-biphenyl]-4-carboxamide1279026-56-0C18H21N3O2
- N-(4-(3,4-Dihydroisoquinolin-2(1H)-yl)but-2-yn-1-yl)-5-oxopyrrolidine-2-carboxamide1351581-44-6C18H21N3O2
- N-(4-(4-Methoxypiperidin-1-yl)phenyl)isonicotinamide1448069-76-8C18H21N3O2
- N-(4-(4-Methoxypiperidin-1-yl)phenyl)nicotinamide1448132-49-7C18H21N3O2
- N-(4-(3-Methoxypiperidin-1-yl)phenyl)isonicotinamide1797278-72-8C18H21N3O2
- N-(4-(3-Methoxypiperidin-1-yl)phenyl)nicotinamide1797872-68-4C18H21N3O2
- N-(4-(3-Methoxypiperidin-1-yl)phenyl)picolinamide1797318-44-5C18H21N3O2
- N-(1-Cyano-1-cyclopropylethyl)-3-[(2-oxopyrrolidin-1-yl)methyl]benzamide1427667-97-7C18H21N3O2
- 5-Cyclopropyl-N-((1-phenylpyrrolidin-2-yl)methyl)isoxazole-3-carboxamide1797172-07-6C18H21N3O2
- N-(1-Cyanocyclobutyl)-N-methyl-1-(4-methylphenyl)-5-oxopyrrolidine-3-carboxamide1797123-34-2C18H21N3O2
- 4-(3-Methoxypyrrolidin-1-yl)-N-(pyridin-4-ylmethyl)benzamide2034305-53-6C18H21N3O2
- 4-(4-Methoxypiperidin-1-yl)-N-(pyridin-4-yl)benzamide2034247-64-6C18H21N3O2
- N-(3,4-Dimethylphenyl)-3-(pyridin-4-yloxy)pyrrolidine-1-carboxamide2034392-57-7C18H21N3O2
- 3-(Cyclopropylmethoxy)-N-(quinolin-5-yl)pyrrolidine-1-carboxamide2034387-46-5C18H21N3O2
- 3-(Cyclopropylmethoxy)-N-(quinolin-8-yl)pyrrolidine-1-carboxamide2034607-91-3C18H21N3O2
- N-[(6-Methylpyrimidin-4-yl)methyl]-4-phenyloxane-4-carboxamide2195938-57-7C18H21N3O2
- (2E)-N-Methyl-4-[(2,6,8-trimethylquinolin-4-yl)formamido]but-2-enamide2097940-67-3C18H21N3O2
- 4-tert-Butyl-2-oxo-N-(quinolin-6-yl)pyrrolidine-3-carboxamide2097920-22-2C18H21N3O2
- 4-(2-{[3-(6-Methylpyridin-3-yl)propyl]amino}phenoxy)azetidin-2-one2224313-00-0C18H21N3O2
- 6-[5-Butanoyl-6-(pyrrolidin-1-yl)pyrimidin-2(1H)-ylidene]cyclohexa-2,4-dien-1-one823801-54-3C18H21N3O2
- 1-{4-[5-(4-Methoxyphenyl)-1H-pyrazol-3-yl]piperidin-1-yl}prop-2-en-1-one2396580-12-2C18H21N3O2
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 N-Cyclohexyl-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide, N-Cyclopentyl-2-(6-oxo-3-(o-tolyl)pyridazin-1(6H)-yl)acetamide, 6-(2-Methylphenyl)-2-(2-oxo-2-piperidin-1-ylethyl)pyridazin-3-one. 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.