Molecular formula
C21H21N3O
153 compounds have this formula on CompoundList.
- Molar mass
- 331.42g/mol
- Monoisotopic mass
- 331.1685Da
- Atoms
- 46
- Elements
- 4
- Rings plus double bonds
- 13
The formula C21H21N3O describes a molecule made of 21 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 × 2176.11%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 216.39%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 312.68%14.007 × 3 = 42.021 g/mol
- O Oxygen × 14.83%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C21H21N3O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 153 compounds
N-(1-Naphthyl)-4-phenyl-1-piperazinecarboxamide
CAS 371228-37-4C21H21N3O
N-Cyclohexyl-2-pyridin-2-ylquinoline-4-carboxamide
CAS 438025-11-7C21H21N3O
4-(1-Benzylbenzimidazol-2-yl)-1-prop-2-enylpyrrolidin-2-one
CAS 838891-33-1C21H21N3O
(E)-2-Cyano-N-cyclohexyl-3-phenyl-N-pyridin-2-ylprop-2-enamide
CAS 721886-27-7C21H21N3O
![5-(2,5-Dimethylbenzyl)-4-oxo-1,2,3,3a,4,5-hexahydropyrrolo[1,2-a]quinoxaline-7-carbonitrile chemical structure, C21H21N3O, CAS 1008035-65-1](/s/DUXLYNDCONOMPI-UHFFFAOYSA-N.svg)
5-(2,5-Dimethylbenzyl)-4-oxo-1,2,3,3a,4,5-hexahydropyrrolo[1,2-a]quinoxaline-7-carbonitrile
CAS 1008035-65-1C21H21N3O
(1,3-Diphenyl-1H-pyrazol-4-yl)(piperidin-1-yl)methanone
CAS 5107-74-4C21H21N3O
Methanone, (4-methyl-1-piperazinyl)(2-phenyl-4-quinolinyl)-
CAS 349400-37-9C21H21N3O
![2-(2-(Piperidin-1-yl)ethyl)indeno[1,2,3-de]phthalazin-3(2H)-one chemical structure, C21H21N3O, CAS 442567-75-1](/s/VSUZINFQPXJVQD-UHFFFAOYSA-N.svg)
2-(2-(Piperidin-1-yl)ethyl)indeno[1,2,3-de]phthalazin-3(2H)-one
CAS 442567-75-1C21H21N3O
N-(4,6-Dimethylpyrimidin-2-yl)-3,3-diphenylpropanamide
CAS 349439-38-9C21H21N3O
N-Benzyl-4-(dimethylamino)-N-(pyridin-2-yl)benzamide
CAS 330216-04-1C21H21N3O
![4-(1-Allyl-1H-benzo[d]imidazol-2-yl)-1-(m-tolyl)pyrrolidin-2-one chemical structure, C21H21N3O, CAS 840498-44-4](/s/OMOLIKRSTNIWAR-UHFFFAOYSA-N.svg)
4-(1-Allyl-1H-benzo[d]imidazol-2-yl)-1-(m-tolyl)pyrrolidin-2-one
CAS 840498-44-4C21H21N3O
N-Tritylglycine hydrazide
CAS 116435-38-2C21H21N3O
N-Cyclohexyl-2-pyridin-3-ylquinoline-4-carboxamide
CAS 689269-48-5C21H21N3O
1-Methyl-3-phenyl-N-(1,2,3,4-tetrahydronaphthalen-1-yl)-1H-pyrazole-5-carboxamide
CAS 1206987-90-7C21H21N3O
5-(Benzylamino)-2-(4-tert-butylphenyl)-1,3-oxazole-4-carbonitrile
CAS 712282-23-0C21H21N3O
![N-Benzyl-1-phenyl-1H,2H,3H,4H-pyrrolo[1,2-a]pyrazine-2-carboxamide chemical structure, C21H21N3O, CAS 900012-24-0](/s/MWARIVRMNUWSLS-UHFFFAOYSA-N.svg)
N-Benzyl-1-phenyl-1H,2H,3H,4H-pyrrolo[1,2-a]pyrazine-2-carboxamide
CAS 900012-24-0C21H21N3O
3-(3,5-Dimethyl-1H-pyrazol-4-yl)-N-(9H-fluoren-2-yl)propanamide
CAS 1286696-81-8C21H21N3O
Eudistomin X
CAS 492463-96-4C21H21N3O
N-(4,6-Diphenylpyrimidin-2-yl)-3-methylbutyramide
CAS 820961-70-4C21H21N3O
6-Amino-N-(3,3-diphenylpropyl)nicotinamide
CAS 914385-60-7C21H21N3O
Tubulin inhibitor 35
CAS 2247047-77-2C21H21N3O
![(E)-1-[4-(1H-Benzimidazol-2-yl)piperidin-1-yl]-3-phenylprop-2-en-1-one chemical structure, C21H21N3O, CAS 836691-58-8](/s/CHPODNMZZVANFN-ZHACJKMWSA-N.svg)
(E)-1-[4-(1H-Benzimidazol-2-yl)piperidin-1-yl]-3-phenylprop-2-en-1-one
CAS 836691-58-8C21H21N3O
4H-Imidazo(4,5-c)quinolin-4-one, 1,5-dihydro-5-butyl-1-(phenylmethyl)-
CAS 133305-98-3C21H21N3O
Pentanamide, N-(2,6-diphenyl-4-pyrimidinyl)-
CAS 820961-43-1C21H21N3O
- N-(2,6-Diphenylpyrimidin-4-yl)-3-methylbutyramide820961-45-3C21H21N3O
- N-(4,6-Diphenylpyrimidin-2-yl)-2,2-dimethylpropanamide820961-69-1C21H21N3O
- N-(2,6-Diphenylpyrimidin-4-yl)-2-methylbutanamide820961-47-5C21H21N3O
- Pentanoic acid (4,6-diphenylpyrimidin-2-yl)amide820961-66-8C21H21N3O
- 4-Benzyl-N-(2-methyl-2,4,5,6-tetrahydrocyclopenta[c]pyrazol-3-yl)benzamide1105221-67-7C21H21N3O
- N-(2,6-Diphenylpyrimidin-4-yl)-2,2-dimethylpropionamide820961-48-6C21H21N3O
- N-(4-tert-Butyl-phenyl)-4-pyrazin-2-yl-benzamide847446-90-6C21H21N3O
- 5-Allyl-N-(4-methoxyphenyl)-6-methyl-2-phenyl-4-pyrimidinamine330998-11-3C21H21N3O
- 4-(1-Allyl-1H-benzo[d]imidazol-2-yl)-1-benzylpyrrolidin-2-one847396-36-5C21H21N3O
- 1,2-Naphthalenedione, 1-[[4-(1-piperidinyl)phenyl]hydrazone], (Z)-(9CI)100903-64-8C21H21N3O
- 2-(Pyridin-3-yl)-4-phenyl-7,7-dimethyl-4,6,7,8-tetrahydroquinazolin-5(1H)-one1040735-76-9C21H21N3O
- (1Z)-3,4-Dihydro-2-(1H-imidazol-1-ylmethyl)-1(2H)-naphthalenone O-(phenylmethyl)oxime1119141-90-0C21H21N3O
- N-(2-Methyl-2-phenylpropyl)-6-phenylpyrazine-2-carboxamide923600-02-6C21H21N3O
- N-(2-Methyl-2-phenylpropyl)-5-phenylpyrazine-2-carboxamide923600-03-7C21H21N3O
- Trpc4/5-IN-13032263-08-1C21H21N3O
- [4-(Naphthalen-1-ylmethyl)piperazin-1-yl]-pyridin-4-ylmethanone354536-26-8C21H21N3O
- [4-(Naphthalen-2-ylmethyl)piperazin-1-yl]-pyridin-4-ylmethanone352436-71-6C21H21N3O
- Naphthalen-1-yl-[4-(pyridin-3-ylmethyl)piperazin-1-yl]methanone425391-80-6C21H21N3O
- 1-(1-Benzyl-1,2,3,6-tetrahydropyridin-4-yl)-2-methylquinazolin-4(1H)-one76857-07-3C21H21N3O
- Naphthalen-1-yl-[4-(pyridin-2-ylmethyl)piperazin-1-yl]methanone461408-05-9C21H21N3O
- (4-Phenylpiperazin-1-yl)-(4-pyrrol-1-ylphenyl)methanone439097-45-7C21H21N3O
- N-Cyclohexyl-2-(pyridin-4-yl)quinoline-4-carboxamide689269-17-8C21H21N3O
- [4-(Naphthalen-1-ylmethyl)piperazin-1-yl]-pyridin-3-ylmethanone354535-44-7C21H21N3O
- (2Z)-2-Cyano-2-(3,3-dimethyl-2,4-dihydroisoquinolin-1-ylidene)-N-(2-methylphenyl)acetamide149652-14-2C21H21N3O
- (2Z)-2-Cyano-2-(3,3-dimethyl-2,4-dihydroisoquinolin-1-ylidene)-N-(4-methylphenyl)acetamide301352-45-4C21H21N3O
- 2-Naphthyl-1-(4-(2-pyridyl)piperazinyl)ethan-1-one924214-12-0C21H21N3O
- 1-Azepanyl[2-(2-pyridyl)-4-quinolyl]methanone879918-89-5C21H21N3O
- 2-Methyl-4-[(4-phenylpiperazin-1-yl)carbonyl]quinoline944691-80-9C21H21N3O
- 3-[(6-Cyclopropylpyridin-3-yl)methyl]-1-[(naphthalen-1-yl)methyl]urea2097864-97-4C21H21N3O
- 3,5-Diphenylpyrazolyl piperidyl ketone478788-37-3C21H21N3O
- 4,4,6,8-Tetramethyl-1-(phenylhydrazono)-4H-pyrrolo[3,2,1-ij]quinolin-2(1H)-one669746-45-6C21H21N3O
- 5-(1H-Indol-3-yl)-3-(4-propan-2-ylphenyl)-4,5-dihydro-1H-pyridazin-6-one1019858-00-4C21H21N3O
- N-[(Dibenzylamino)methyl]pyridine-3-carboxamide20973-56-2C21H21N3O
- 1-[(3-Methylphenyl)methyl]-2-(5-propyl-1,3,4-oxadiazol-2-yl)-1H-indole921779-50-2C21H21N3O
- 4-((1H-Imidazol-1-yl)methyl)-N-(1,2,3,4-tetrahydronaphthalen-1-yl)benzamide1203256-13-6C21H21N3O
- 4,6-Dimethyl-pyridine-2-carboxylic acid methyl-(4-o-tolyl-pyridin-3-yl)-amide1395413-30-5C21H21N3O
- (1E)-4,4,6,9-Tetramethyl-1-(2-phenylhydrazinylidene)-4H-pyrrolo[3,2,1-ij]quinolin-2(1H)-one724778-70-5C21H21N3O
- N-(4-Ethyl-3-phenyl-3H-1,5-benzodiazepin-2-yl)cyclopropanecarboxamide903431-99-2C21H21N3O
- N-Phenyl-1-(p-tolyl)-3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carboxamide900002-95-1C21H21N3O
- 2-(4-Benzoylpiperazin-1-yl)-4-methylquinoline449780-98-7C21H21N3O
- N-(3-(2-Phenyl-1H-imidazol-1-yl)propyl)cinnamamide1421586-54-0C21H21N3O
- 7-Benzyl-2-(4-methylphenyl)-3H,4H,5H,6H,7H,8H-pyrido[3,4-d]pyrimidin-4-one1031990-66-5C21H21N3O
- 1 suppliersN,N,N-Tribenzylnitrous hydrazide90985-18-5C21H21N3O
- (4,5-Diphenylimidazol-1-yl)-piperidin-1-ylmethanone432016-58-5C21H21N3O
- 4-Methylphenyl 2-phenyl-6-(1-pyrrolidinyl)-4-pyrimidinyl ether339018-74-5C21H21N3O
- 1-(4-Butyl-2-phenylimidazo[1,2-a]benzimidazol-1-yl)ethanone107486-23-7C21H21N3O
- 2-(2H-1,2,3-Benzotriazol-2-yl)-2-[(2E)-3-phenylprop-2-en-1-yl]cyclohexan-1-one516519-69-0C21H21N3O
- 1-Phenyl-4-[3-(1H-pyrrol-1-yl)benzoyl]piperazine879316-07-1C21H21N3O
- 1-[(2-Methylphenyl)methyl]-2-(5-propyl-1,3,4-oxadiazol-2-yl)-1H-indole921800-90-0C21H21N3O
- 1-(4-Hydroxyphenyl)-4-(6-phenylpyrid-2-yl)piperazine112190-11-1C21H21N3O
- 1-[(3-Methylphenyl)methyl]-2-[5-(propan-2-yl)-1,3,4-oxadiazol-2-yl]-1H-indole921801-35-6C21H21N3O
- 1-[(2-Methylphenyl)methyl]-2-[5-(propan-2-yl)-1,3,4-oxadiazol-2-yl]-1H-indole921779-87-5C21H21N3O
- 1-[(4-Methylphenyl)methyl]-2-(5-propyl-1,3,4-oxadiazol-2-yl)-1H-indole921842-49-1C21H21N3O
- 3-Phenyl-1'-prop-2-ynylspiro[1H-quinazoline-2,4'-piperidine]-4-one1333541-48-2C21H21N3O
- N-Benzhydryl-4,5,6,7-tetrahydro-1H-benzo[d]imidazole-5-carboxamide2034440-21-4C21H21N3O
- 1-[1-(1-Phenylcyclopropanecarbonyl)pyrrolidin-3-yl]-1H-1,3-benzodiazole2034514-08-2C21H21N3O
- 1,5-Dimethyl-4-{[(E,2E)-2-methyl-3-phenyl-2-propenylidene]amino}-2-phenyl-1,2-dihydro-3H-pyrazol-3-one329069-39-8C21H21N3O
- 2-Pyrazolin-5-one, 1,3-diphenyl-4-(piperidinomethylene)-5272-54-8C21H21N3O
- N-(4-Methylphenyl)-1-phenyl-3,4-dihydro-1H-pyrrolo[1,2-a]pyrazine-2-carboxamide899749-72-5C21H21N3O
- N-(3-Methylphenyl)-1-phenyl-3,4-dihydro-1H-pyrrolo[1,2-a]pyrazine-2-carboxamide900012-13-7C21H21N3O
- 3,5-Dimethyl-N-(2-phenyl-2,4,5,6-tetrahydrocyclopenta[c]pyrazol-3-yl)benzamide1043141-59-8C21H21N3O
- N-(3-Phenyl-1,8-naphthyridin-2-yl)cyclohexanecarboxamide1021106-15-9C21H21N3O
- 10-(2-Methylbenzyl)-2-propylpyrimido[1,2-a]benzimidazol-4(10H)-one1223880-15-6C21H21N3O
- 3,4-Dimethyl-N-(2-phenyl-2,4,5,6-tetrahydrocyclopenta[c]pyrazol-3-yl)benzamide1209235-76-6C21H21N3O
- N-(1-Cyanocyclopentyl)-2-[(9H-fluoren-2-yl)amino]acetamide1240831-51-9C21H21N3O
- N-[2-(1H-Indol-3-yl)ethyl]-2-(4-methyl-1H-indol-1-yl)acetamide1219555-10-8C21H21N3O
- 1-Methyl-N-[1-(propan-2-yl)-1H-indol-4-yl]-1H-indole-5-carboxamide1324055-01-7C21H21N3O
- 1-Methyl-N-[1-(propan-2-yl)-1H-indol-4-yl]-1H-indole-6-carboxamide1324090-03-0C21H21N3O
- 1-Methyl-N-[1-(propan-2-yl)-1H-indol-4-yl]-1H-indole-4-carboxamide1324068-29-2C21H21N3O
- 3-(3-Aminoisoquinolin-7-yl)-N-cyclobutyl-4-methylbenzamide1401804-10-1C21H21N3O
- N-[2-(1H-Indol-3-yl)ethyl]-2-(5-methyl-1H-indol-1-yl)acetamide1374524-63-6C21H21N3O
- N-(1-Methyl-1H-indol-4-yl)-3-(5-methyl-1H-indol-1-yl)propanamide1351682-56-8C21H21N3O
- 2-(Naphthalen-1-yl)-N-[1-(pyridin-2-yl)pyrrolidin-3-yl]acetamide1795417-84-3C21H21N3O
- N-({[2,3'-Bipyridine]-5-yl}methyl)-3-(2-methylphenyl)propanamide2034400-91-2C21H21N3O
- N-(2-(2-Cyclopropyl-1H-imidazol-1-yl)ethyl)-[1,1'-biphenyl]-4-carboxamide2034451-75-5C21H21N3O
- N-[2-(1H-Indol-1-yl)ethyl]-2-(1-methyl-1H-indol-3-yl)acetamide1630872-45-5C21H21N3O
Frequently asked questions
What is the molar mass of C21H21N3O?
The molar mass of C21H21N3O is 331.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 331.1685 Da.
How many compounds have the formula C21H21N3O?
CompoundList lists 153 compounds with the molecular formula C21H21N3O, including N-(1-Naphthyl)-4-phenyl-1-piperazinecarboxamide, N-Cyclohexyl-2-pyridin-2-ylquinoline-4-carboxamide, 4-(1-Benzylbenzimidazol-2-yl)-1-prop-2-enylpyrrolidin-2-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 C21H21N3O?
C21H21N3O has a degree of unsaturation of 13. 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.