Molecular formula
C21H21N3O2
331 compounds have this formula on CompoundList.
- Molar mass
- 347.42g/mol
- Monoisotopic mass
- 347.1634Da
- Atoms
- 47
- Elements
- 4
- Rings plus double bonds
- 13
The formula C21H21N3O2 describes a molecule made of 21 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 × 2172.60%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 216.09%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 312.10%14.007 × 3 = 42.021 g/mol
- O Oxygen × 29.21%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C21H21N3O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 331 compounds
Morpholine, 4-((1,3-diphenyl-5-methyl-1H-pyrazol-4-yl)carbonyl)-
CAS 125103-49-3C21H21N3O2
Guanidine, N,N'-bis(4-methoxyphenyl)-N''-phenyl-
CAS 195532-19-5C21H21N3O2
![N-(2-Ethylphenyl)-2-[3-(4-methylphenyl)-6-oxopyridazin-1-yl]acetamide chemical structure, C21H21N3O2, CAS 898132-84-8](/s/VOPXVHUQXOQFDJ-UHFFFAOYSA-N.svg)
N-(2-Ethylphenyl)-2-[3-(4-methylphenyl)-6-oxopyridazin-1-yl]acetamide
CAS 898132-84-8C21H21N3O2
3-(4-Ethoxyanilino)-1-phenyl-6,7-dihydro-5H-indazol-4-one
CAS 879624-31-4C21H21N3O2
![N-[5-(2,5-Dimethylphenyl)-1,3,4-oxadiazol-2-yl]-5,6,7,8-tetrahydronaphthalene-2-carboxamide chemical structure, C21H21N3O2, CAS 891122-33-1](/s/AXAQVZKLNNBEBB-UHFFFAOYSA-N.svg)
N-[5-(2,5-Dimethylphenyl)-1,3,4-oxadiazol-2-yl]-5,6,7,8-tetrahydronaphthalene-2-carboxamide
CAS 891122-33-1C21H21N3O2
2-(6-Oxo-3-phenylpyridazin-1-yl)-N-(2,4,6-trimethylphenyl)acetamide
CAS 923100-44-1C21H21N3O2
![N-(2,4-Dimethylphenyl)-2-[3-(4-methylphenyl)-6-oxopyridazin-1-yl]acetamide chemical structure, C21H21N3O2, CAS 922863-49-8](/s/ZVBSSRDSALDTBK-UHFFFAOYSA-N.svg)
N-(2,4-Dimethylphenyl)-2-[3-(4-methylphenyl)-6-oxopyridazin-1-yl]acetamide
CAS 922863-49-8C21H21N3O2
![N-Benzyl-2-[3-(3,4-dimethylphenyl)-6-oxopyridazin-1-yl]acetamide chemical structure, C21H21N3O2, CAS 922953-22-8](/s/KYEXADIFWXITRJ-UHFFFAOYSA-N.svg)
N-Benzyl-2-[3-(3,4-dimethylphenyl)-6-oxopyridazin-1-yl]acetamide
CAS 922953-22-8C21H21N3O2
4-(2,6-Dimethylmorpholine-4-carbonyl)-2-(pyridin-2-yl)quinoline
CAS 879919-13-8C21H21N3O2
![4-(3-Phenyl-1,2,4-oxadiazol-5-yl)-1-[4-(propan-2-yl)phenyl]pyrrolidin-2-one chemical structure, C21H21N3O2, CAS 941892-29-1](/s/FIHSEIUBUSXSCL-UHFFFAOYSA-N.svg)
4-(3-Phenyl-1,2,4-oxadiazol-5-yl)-1-[4-(propan-2-yl)phenyl]pyrrolidin-2-one
CAS 941892-29-1C21H21N3O2
![1-(4-Ethylphenyl)-4-[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one chemical structure, C21H21N3O2, CAS 941961-37-1](/s/HCXWILKDQCUPGV-UHFFFAOYSA-N.svg)
1-(4-Ethylphenyl)-4-[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one
CAS 941961-37-1C21H21N3O2
![2-Methyl-4-[(4-phenylpiperidino)carbonyl]-1(2H)-phthalazinone chemical structure, C21H21N3O2, CAS 1374537-23-1](/s/YOPUVKAQKVRLHW-UHFFFAOYSA-N.svg)
2-Methyl-4-[(4-phenylpiperidino)carbonyl]-1(2H)-phthalazinone
CAS 1374537-23-1C21H21N3O2
1(6H)-Pyridazineacetamide, N-methyl-N-alpha-methylbenzyl-6-oxo-3-phenyl-
CAS 55902-12-0C21H21N3O2
![5-(4-Phenyloxane-4-carbonyl)-2,5,7-triazatricyclo[6.4.0.0^{2,6}]dodeca-1(8),6,9,11-tetraene chemical structure, C21H21N3O2, CAS 1206992-67-7](/s/UCSVPTZUSMOSLL-UHFFFAOYSA-N.svg)
5-(4-Phenyloxane-4-carbonyl)-2,5,7-triazatricyclo[6.4.0.0^{2,6}]dodeca-1(8),6,9,11-tetraene
CAS 1206992-67-7C21H21N3O2
![N-(2,6-Dimethylphenyl)-2-[3-(4-methylphenyl)-6-oxopyridazin-1(6H)-yl]acetamide chemical structure, C21H21N3O2, CAS 1291832-30-8](/s/RQWIHDLVIASQMH-UHFFFAOYSA-N.svg)
N-(2,6-Dimethylphenyl)-2-[3-(4-methylphenyl)-6-oxopyridazin-1(6H)-yl]acetamide
CAS 1291832-30-8C21H21N3O2
![N-(1-{2-[3,4-Dihydro-2(1H)-isoquinolinyl]-2-oxoethyl}-1H-indol-4-yl)acetamide chemical structure, C21H21N3O2, CAS 1574473-28-1](/s/GOBUOYRZBGVIRV-UHFFFAOYSA-N.svg)
N-(1-{2-[3,4-Dihydro-2(1H)-isoquinolinyl]-2-oxoethyl}-1H-indol-4-yl)acetamide
CAS 1574473-28-1C21H21N3O2
![(E)-3-(4-Butoxyphenyl)-2-(1-methyl-1H-benzo[d]imidazol-2(3H)-ylidene)-3-oxopropanenitrile chemical structure, C21H21N3O2, CAS 476279-66-0](/s/AFBVDBNPXAACLQ-JZJYNLBNSA-N.svg)
(E)-3-(4-Butoxyphenyl)-2-(1-methyl-1H-benzo[d]imidazol-2(3H)-ylidene)-3-oxopropanenitrile
CAS 476279-66-0C21H21N3O2
1H-Pyrido(3,4-b)indole-6-carboxamide, 2,3,4,9-tetrahydro-9-methyl-1-oxo-N-(2-phenylethyl)-
CAS 184691-66-5C21H21N3O2
![4-tert-Butyl-N-[3-(pyrazin-2-yloxy)phenyl]benzamide chemical structure, C21H21N3O2, CAS 866157-12-2](/s/WKQHAKWSRBPSAJ-UHFFFAOYSA-N.svg)
4-tert-Butyl-N-[3-(pyrazin-2-yloxy)phenyl]benzamide
CAS 866157-12-2C21H21N3O2
![N-(3-Methoxyphenyl)-1-phenyl-3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carboxamide chemical structure, C21H21N3O2, CAS 899749-73-6](/s/MJDQEQCIQKXCOI-UHFFFAOYSA-N.svg)
N-(3-Methoxyphenyl)-1-phenyl-3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carboxamide
CAS 899749-73-6C21H21N3O2
Z-Darenzepine
CAS 84629-60-7C21H21N3O2
1-(2,5-Dimethylbenzyl)-N-(6-methylpyridin-2-yl)-2-oxo-1,2-dihydropyridine-3-carboxamide
CAS 941952-79-0C21H21N3O2
![2-(6-Oxo-3-phenylpyridazin-1(6H)-yl)-N-[4-(propan-2-yl)phenyl]acetamide chemical structure, C21H21N3O2, CAS 923100-64-5](/s/FGKGAKJLPWSHHW-UHFFFAOYSA-N.svg)
2-(6-Oxo-3-phenylpyridazin-1(6H)-yl)-N-[4-(propan-2-yl)phenyl]acetamide
CAS 923100-64-5C21H21N3O2
N-Cyclopentyl-2-(3-(naphthalen-2-yl)-6-oxopyridazin-1(6H)-yl)acetamide
CAS 923099-88-1C21H21N3O2
- 3-{[2-(1H-Indol-3-yl)ethyl]amino}-1-(2-methylphenyl)pyrrolidine-2,5-dione1009169-22-5C21H21N3O2
- 4-Phenyl-6-(3-phenylpropyl)-1H,2H,3H,4H,5H,6H,7H-pyrrolo[3,4-d]pyrimidine-2,5-dione931638-64-1C21H21N3O2
- 4-(2-Methylphenyl)-6-(2-phenylethyl)-1H,2H,3H,4H,5H,6H,7H-pyrrolo[3,4-d]pyrimidine-2,5-dione941045-73-4C21H21N3O2
- 1-(3,4-Dimethylphenyl)-4-[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one941893-32-9C21H21N3O2
- 1-(3,4-Dimethylphenyl)-4-[3-(4-methylphenyl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one941962-56-7C21H21N3O2
- (4-Benzylpiperazin-1-yl)(4-hydroxyquinolin-3-yl)methanone738550-02-2C21H21N3O2
- 1-(3,5-Dimethylphenyl)-4-[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one941955-12-0C21H21N3O2
- Methanone, [5-(4-methylphenyl)-4-isoxazolyl](4-phenyl-1-piperazinyl)-1003559-14-5C21H21N3O2
- 2-[3-(2,5-Dimethylphenyl)-6-oxopyridazin-1(6H)-yl]-N-phenylpropanamide891392-49-7C21H21N3O2
- 3-Methyl-N-(2-{[6-(4-methylphenyl)pyridazin-3-yl]oxy}ethyl)benzamide946317-62-0C21H21N3O2
- (1-Methyl-1H-indol-2-yl)[4-(phenylcarbonyl)piperazin-1-yl]methanone1081144-80-0C21H21N3O2
- 2-([1,1'-Biphenyl]-4-yl)-N-(3-(6-oxopyridazin-1(6H)-yl)propyl)acetamide1203124-27-9C21H21N3O2
- N-[5-(3,4-Dimethylphenyl)-1,3,4-oxadiazol-2-yl]-5,6,7,8-tetrahydronaphthalene-2-carboxamide923095-24-3C21H21N3O2
- 1-[4-(1H-Indol-2-ylcarbonyl)piperazin-1-yl]-2-phenylethanone1010874-53-9C21H21N3O2
- 3,4-Dihydro-2(1H)-isoquinolinyl[3-(4-methoxyphenyl)-1-methyl-1H-pyrazol-5-yl]methanone1172573-76-0C21H21N3O2
- N-(2,6-Dimethylphenyl)-1-(4-methylbenzyl)-6-oxo-1,6-dihydropyridazine-3-carboxamide1049503-96-9C21H21N3O2
- 4-[5-(2-Methylphenyl)-1,2,4-oxadiazol-3-yl]-1-(2-phenylethyl)pyrrolidin-2-one1171745-75-7C21H21N3O2
- N-(4-Benzyloxy-3-phenoxy-phenyl)-N''-methyl-guanidine190018-06-5C21H21N3O2
- N-Benzhydryl-2-(3-methyl-6-oxopyridazin-1(6H)-yl)propanamide1234868-51-9C21H21N3O2
- 1 suppliers1-(1-(Benzofuran-3-ylmethyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one1240407-35-5C21H21N3O2
- N-(2-Ethyl-6-methylphenyl)-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide1291859-52-3C21H21N3O2
- 2-(6-Oxo-3-phenylpyridazin-1(6H)-yl)-N-(3-phenylpropyl)acetamide1291851-84-7C21H21N3O2
- 1-Phenyl-4-[5-(1-phenylpropyl)-1,2,4-oxadiazol-3-yl]pyrrolidin-2-one1326942-66-8C21H21N3O2
- N-(3,3-Diphenylpropyl)-6-methoxypyridazine-3-carboxamide1334373-18-0C21H21N3O2
- 3-(2-(4-(Pyridin-2-ylamino)phenoxy)pyridin-3-yl)cyclopentanol1231923-60-6C21H21N3O2
- 2-(3,4-Dihydroisoquinolin-2(1H)-ylmethyl)-6-(2-methoxyphenyl)pyridazin-3(2H)-one1374546-31-2C21H21N3O2
- 2-(4-Benzyl-piperidin-1-yl)-N-(4-cyano-phenyl)-2-oxo-acetamide496054-89-8C21H21N3O2
- 3-[3-(Isoquinolin-5-ylamino)-pyrrolidin-1-ylmethyl]-benzoic acid1404375-79-6C21H21N3O2
- N-(3-(6,7-Dihydro-5H-pyrrolo[1,2-a]imidazol-3-yl)phenyl)-4-ethoxybenzamide1396682-42-0C21H21N3O2
- N-(3-(6,7-Dihydro-5H-pyrrolo[1,2-a]imidazol-3-yl)phenyl)-2-phenoxypropanamide1421461-64-4C21H21N3O2
- (4-(1H-Pyrrol-1-yl)phenyl)(4-(pyridin-2-yloxy)piperidin-1-yl)methanone1448135-37-2C21H21N3O2
- N-(1-Ethyl-1H-indol-6-yl)-4-[(prop-2-enamido)methyl]benzamide1376297-77-6C21H21N3O2
- N-Phenyl-4-(quinolin-8-yloxy)piperidine-1-carboxamide2034495-14-0C21H21N3O2
- N-([2,3'-Bipyridin]-5-ylmethyl)-4-isopropoxybenzamide2034208-56-3C21H21N3O2
- N-([2,4'-Bipyridin]-3-ylmethyl)-4-isopropoxybenzamide2034474-41-2C21H21N3O2
- (3-Phenylazepan-1-yl)(5-(pyridin-3-yl)isoxazol-3-yl)methanone2034485-65-7C21H21N3O2
- 1-(4-(1-Methyl-1H-pyrazol-4-yl)-3,4-dihydroisoquinolin-2(1H)-yl)-2-phenoxyethanone2034422-22-3C21H21N3O2
- 5,5-Dimethyl-2-[({4-[(E)-phenyldiazenyl]phenyl}amino)methylidene]cyclohexane-1,3-dione55118-94-0C21H21N3O2
- 3,5-Pyrazolidinedione, 1,2-diphenyl-4-(piperidinomethylene)-23711-46-8C21H21N3O2
- [2-[3-(4-Methylphenyl)-1,2,4-oxadiazol-5-yl]phenyl]-piperidin-1-ylmethanone850157-45-8C21H21N3O2
- N-(2-Methoxyphenyl)-2-phenyl-2-(phenylmethyl)hydrazinecarboxamide749902-98-5C21H21N3O2
- Piperidine, 1-((4-oxo-2-phenyl-3(4H)-quinazolinyl)acetyl)-70540-63-5C21H21N3O2
- N-(4-Methoxyphenyl)-1-phenyl-3,4-dihydro-1H-pyrrolo[1,2-a]pyrazine-2-carboxamide899959-62-7C21H21N3O2
- [2-[3-(3-Methylphenyl)-1,2,4-oxadiazol-5-yl]phenyl]-piperidin-1-ylmethanone849828-77-9C21H21N3O2
- (E,Z)-Darenzepine118664-84-9C21H21N3O2
- N-[5-(2,4-Dimethylphenyl)-1,3,4-oxadiazol-2-yl]-5,6,7,8-tetrahydronaphthalene-2-carboxamide891112-95-1C21H21N3O2
- N-[3-(2-Methyl-4-oxoquinazolin-3-yl)phenyl]cyclopentanecarboxamide898428-75-6C21H21N3O2
- N-[4-(2-Methyl-4-oxoquinazolin-3-yl)phenyl]cyclopentanecarboxamide904273-06-9C21H21N3O2
- N-Cyclopentyl-2-(2-oxo-4-phenylquinazolin-1-yl)acetamide932320-99-5C21H21N3O2
- 3-(1H-Indol-3-yl)-N-[3-(2-oxopyrrolidin-1-yl)phenyl]propanamide878459-13-3C21H21N3O2
- 6-Nitro-2-[(4-phenylpiperidin-1-yl)methyl]quinoline832101-96-9C21H21N3O2
- 1-(4-Methoxyphenyl)-N-phenyl-1H,2H,3H,4H-pyrrolo[1,2-a]pyrazine-2-carboxamide899960-46-4C21H21N3O2
- 4-(6-Oxo-3-phenylpyridazin-1(6H)-yl)-N-(o-tolyl)butanamide953181-52-7C21H21N3O2
- 4-(6-Oxo-3-phenylpyridazin-1(6H)-yl)-N-(p-tolyl)butanamide953158-68-4C21H21N3O2
- 1-(4-Ethylphenyl)-4-[3-(4-methylphenyl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one941918-11-2C21H21N3O2
- 1-[1-(Furan-2-ylmethyl)-2,5-dimethyl-1H-pyrrol-3-yl]-2-(2-methyl-1H-benzimidazol-1-yl)ethanone948163-46-0C21H21N3O2
- 3,5-Dimethyl-N-(2-(6-oxo-3-phenylpyridazin-1(6H)-yl)ethyl)benzamide921872-94-8C21H21N3O2
- 4-Methyl-N-(2-{[6-(4-methylphenyl)pyridazin-3-yl]oxy}ethyl)benzamide1005296-15-0C21H21N3O2
- 3,4-Dimethyl-N-(2-(6-oxo-3-phenylpyridazin-1(6H)-yl)ethyl)benzamide921872-64-2C21H21N3O2
- 1-Cyclopentyl-3-(4-phenoxyphenyl)-1H-pyrazole-4-carboxamide952330-65-3C21H21N3O2
- 2-[4-(4-Methylphenyl)-6-oxo-1,6-dihydropyrimidin-1-yl]-N-(2-phenylethyl)acetamide1058227-13-6C21H21N3O2
- 3,5-Dimethyl-N-{2-[(6-phenylpyridazin-3-yl)oxy]ethyl}benzamide920180-66-1C21H21N3O2
- 3-(1H-Indol-3-yl)-N-[4-(2-oxopyrrolidin-1-yl)phenyl]propanamide1323923-09-6C21H21N3O2
- N-(2-(3-Methyl-1,2,4-oxadiazol-5-yl)phenyl)-1-phenylcyclopentanecarboxamide1119441-95-0C21H21N3O2
- 4-Oxo-N-[2-(1-piperidyl)phenyl]-1H-quinoline-3-carboxamide873050-43-2C21H21N3O2
- N-(2-(6-Oxo-3-phenylpyridazin-1(6H)-yl)ethyl)-2-(m-tolyl)acetamide921873-03-2C21H21N3O2
- N-[1-(1H-Indol-2-ylcarbonyl)piperidin-4-yl]benzamide1282133-62-3C21H21N3O2
- 1-[(4-Methylphenyl)methyl]-6-oxo-N-(1-phenylethyl)-1,6-dihydropyridazine-3-carboxamide1049574-93-7C21H21N3O2
- 4-[5-(4-Methylphenyl)-1,2,4-oxadiazol-3-yl]-1-(2-phenylethyl)pyrrolidin-2-one1172900-69-4C21H21N3O2
- N-(2,3-Dihydro-1H-inden-2-yl)-4-(4-oxoquinazolin-3(4H)-yl)butanamide1190290-93-7C21H21N3O2
- N-Cyclopentyl-4-[(4-oxoquinazolin-3(4H)-yl)methyl]benzamide1190301-38-2C21H21N3O2
- 2-[3-(3,4-Dimethylphenyl)-6-oxopyridazin-1(6H)-yl]-N-methyl-N-phenylacetamide1252900-27-8C21H21N3O2
- 2-(10-Oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)-N-(m-tolyl)acetamide1251600-40-4C21H21N3O2
- 2-(10-Oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)-N-(o-tolyl)acetamide1251616-51-9C21H21N3O2
- N-(4-Methylbenzyl)-2-(4-methyl-6-oxo-2-phenylpyrimidin-1(6H)-yl)acetamide1260925-61-8C21H21N3O2
- 2-[(3-Benzoylphenyl)amino]-N-(1-cyano-1-cyclopropylethyl)acetamide1258765-47-7C21H21N3O2
Frequently asked questions
What is the molar mass of C21H21N3O2?
The molar mass of C21H21N3O2 is 347.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 347.1634 Da.
How many compounds have the formula C21H21N3O2?
CompoundList lists 331 compounds with the molecular formula C21H21N3O2, including Morpholine, 4-((1,3-diphenyl-5-methyl-1H-pyrazol-4-yl)carbonyl)-, Guanidine, N,N'-bis(4-methoxyphenyl)-N''-phenyl-, N-(2-Ethylphenyl)-2-[3-(4-methylphenyl)-6-oxopyridazin-1-yl]acetamide. 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 C21H21N3O2?
C21H21N3O2 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.