Molecular formula
C21H21N5O
97 compounds have this formula on CompoundList.
- Molar mass
- 359.43g/mol
- Monoisotopic mass
- 359.1746Da
- Atoms
- 48
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H21N5O describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 5 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 × 2170.17%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 215.89%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 519.48%14.007 × 5 = 70.035 g/mol
- O Oxygen × 14.45%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C21H21N5O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 97 of 97 compounds
![4-Tert-Butyl-N-[6-(1H-Imidazol-1-Yl)imidazo[1,2-A]pyridin-2-Yl]benzamide chemical structure, C21H21N5O, CAS 1005775-55-2](/s/SMJAMOAYGIVKRI-UHFFFAOYSA-N.svg)
4-Tert-Butyl-N-[6-(1H-Imidazol-1-Yl)imidazo[1,2-A]pyridin-2-Yl]benzamide
CAS 1005775-55-2C21H21N5O
![2-[(2,3-Dimethylphenyl)amino]-8-methyl-4-phenyl-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one chemical structure, C21H21N5O, CAS 777867-90-0](/s/BTCNKKAUUNSGNF-UHFFFAOYSA-N.svg)
2-[(2,3-Dimethylphenyl)amino]-8-methyl-4-phenyl-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one
CAS 777867-90-0C21H21N5O
![2-(Benzylamino)-8-methyl-4-(4-methylphenyl)-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one chemical structure, C21H21N5O, CAS 777866-99-6](/s/YLJSHUSEFTUBCI-UHFFFAOYSA-N.svg)
2-(Benzylamino)-8-methyl-4-(4-methylphenyl)-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one
CAS 777866-99-6C21H21N5O
![5-(4-Ethylpiperazin-1-yl)-8H-phthalazino[1,2-b]quinazolin-8-one chemical structure, C21H21N5O, CAS 315682-88-3](/s/JIXXDSXYICGICA-UHFFFAOYSA-N.svg)
5-(4-Ethylpiperazin-1-yl)-8H-phthalazino[1,2-b]quinazolin-8-one
CAS 315682-88-3C21H21N5O
![8-Methyl-4-(4-methylphenyl)-2-[(4-methylphenyl)amino]-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one chemical structure, C21H21N5O, CAS 774563-00-7](/s/KUAHYNTVYFRSRQ-UHFFFAOYSA-N.svg)
8-Methyl-4-(4-methylphenyl)-2-[(4-methylphenyl)amino]-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one
CAS 774563-00-7C21H21N5O
![4-[4-(4-Methoxyphenyl)piperazino]-5H-pyrimido[5,4-b]indole chemical structure, C21H21N5O, CAS 338419-63-9](/s/LFTVZXRUGJNGFT-UHFFFAOYSA-N.svg)
4-[4-(4-Methoxyphenyl)piperazino]-5H-pyrimido[5,4-b]indole
CAS 338419-63-9C21H21N5O
![2-[(2,4-Dimethylphenyl)amino]-8-methyl-4-phenyl-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one chemical structure, C21H21N5O, CAS 775291-71-9](/s/FAQYJYJNIDNIGD-UHFFFAOYSA-N.svg)
2-[(2,4-Dimethylphenyl)amino]-8-methyl-4-phenyl-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one
CAS 775291-71-9C21H21N5O
![6-Phenyl-2-[(4,6,8-trimethylquinazolin-2-yl)amino]-5,6-dihydropyrimidin-4(3H)-one chemical structure, C21H21N5O, CAS 406714-01-0](/s/WJVKPOOHLWHFBA-UHFFFAOYSA-N.svg)
6-Phenyl-2-[(4,6,8-trimethylquinazolin-2-yl)amino]-5,6-dihydropyrimidin-4(3H)-one
CAS 406714-01-0C21H21N5O
![3-[6-(2-Pyridin-2-yl-5,6-dihydro-4H-pyrrolo[2,1-e]pyrazol-3-yl)benzimidazol-1-yl]propan-1-ol chemical structure, C21H21N5O, CAS 705263-43-0](/s/SYCWRTUPLPDKDX-UHFFFAOYSA-N.svg)
3-[6-(2-Pyridin-2-yl-5,6-dihydro-4H-pyrrolo[2,1-e]pyrazol-3-yl)benzimidazol-1-yl]propan-1-ol
CAS 705263-43-0C21H21N5O
9H-Purin-6-amine, N,N-dimethyl-9-((4-(phenylmethoxy)phenyl)methyl)-
CAS 112089-09-5C21H21N5O
9H-Purin-6-amine, N,N-dimethyl-9-((3-(phenylmethoxy)phenyl)methyl)-
CAS 112089-22-2C21H21N5O
![1-(2,4-Dimethylphenyl)-N-[(4-methoxyphenyl)methyl]pyrazolo[3,4-d]pyrimidin-4-amine chemical structure, C21H21N5O, CAS 393822-86-1](/s/BXNLCPFQLKXRGP-UHFFFAOYSA-N.svg)
1-(2,4-Dimethylphenyl)-N-[(4-methoxyphenyl)methyl]pyrazolo[3,4-d]pyrimidin-4-amine
CAS 393822-86-1C21H21N5O
![N-(2-Aminophenyl)-4-[[4-(dimethylamino)phenyl]diazenyl]benzamide chemical structure, C21H21N5O, CAS 1628784-50-8](/s/JTNDTZSCCLTZNP-UHFFFAOYSA-N.svg)
N-(2-Aminophenyl)-4-[[4-(dimethylamino)phenyl]diazenyl]benzamide
CAS 1628784-50-8C21H21N5O
![[1-(2,4-Dimethylphenyl)pyrazolo[4,5-e]pyrimidin-4-yl][(2-methoxyphenyl)methyl] amine chemical structure, C21H21N5O, CAS 393822-92-9](/s/TVTLSSJOVIZTRM-UHFFFAOYSA-N.svg)
[1-(2,4-Dimethylphenyl)pyrazolo[4,5-e]pyrimidin-4-yl][(2-methoxyphenyl)methyl] amine
CAS 393822-92-9C21H21N5O
Macrocyclic quinoxaline-pyrrolodihydropiperidinone
CAS 1552312-80-7C21H21N5O
2-((2-((3R)-3-Aminopiperidin-1-yl)-4-oxoquinazolin-3(4H)-YL)methyl)benzonitrile
CAS 940907-93-7C21H21N5O
![3-(4-Methylphenyl)-N-[(oxolan-2-yl)methyl]-[1,2,3]triazolo[1,5-a]quinazolin-5-amine chemical structure, C21H21N5O, CAS 866843-77-8](/s/UWJBEYLXFITAGA-UHFFFAOYSA-N.svg)
3-(4-Methylphenyl)-N-[(oxolan-2-yl)methyl]-[1,2,3]triazolo[1,5-a]quinazolin-5-amine
CAS 866843-77-8C21H21N5O
1-(6-Phenylpyridazin-3-yl)-N-(pyridin-2-yl)piperidine-4-carboxamide
CAS 1105230-59-8C21H21N5O
1-Phenyl-3-(3-(6-(pyrrolidin-1-yl)pyridazin-3-yl)phenyl)urea
CAS 1020975-22-7C21H21N5O
1-(6-Phenylpyridazin-3-yl)-N-(pyridin-2-yl)piperidine-3-carboxamide
CAS 1105212-62-1C21H21N5O
1-(6-Phenylpyridazin-3-yl)-N-(pyridin-3-yl)piperidine-4-carboxamide
CAS 1105217-05-7C21H21N5O
1-(6-Phenylpyridazin-3-yl)-N-(pyridin-4-yl)piperidine-3-carboxamide
CAS 1105231-01-3C21H21N5O
![2-Phenyl-4-(1-piperidin-4-ylpyrazol-4-yl)furo[2,3-c]pyridin-7-amine chemical structure, C21H21N5O, CAS 1326708-59-1](/s/KYXXOKOHWQXGAO-UHFFFAOYSA-N.svg)
2-Phenyl-4-(1-piperidin-4-ylpyrazol-4-yl)furo[2,3-c]pyridin-7-amine
CAS 1326708-59-1C21H21N5O
![3-(2-Methoxyphenyl)-2,5-dimethyl-N-(pyridin-2-ylmethyl)pyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C21H21N5O, CAS 879575-97-0](/s/IYXAVWSFOFWKCN-UHFFFAOYSA-N.svg)
3-(2-Methoxyphenyl)-2,5-dimethyl-N-(pyridin-2-ylmethyl)pyrazolo[1,5-a]pyrimidin-7-amine
CAS 879575-97-0C21H21N5O
- 3-(2-Methoxyphenyl)-2,5-dimethyl-N-(pyridin-3-ylmethyl)pyrazolo[1,5-a]pyrimidin-7-amine902012-54-8C21H21N5O
- 1-(3,4-Dimethylphenyl)-N-(2-methoxybenzyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine890889-81-3C21H21N5O
- 1-Butyl-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-D]pyrimidin-4-amine2213398-77-5C21H21N5O
- 1,2,4-Triazolo(3,4-a)phthalazine, 3-(4-methoxyphenyl)-6-((1-pyrrolidinyl)methyl)-98124-14-2C21H21N5O
- 6-Amino-2-ethyl-8-(2-methoxyphenyl)-1,3,8,8a-tetrahydroisoquinoline-5,5,7-tricarbonitrile362590-79-2C21H21N5O
- (8R,8aR)-6-Amino-2-ethyl-8-(2-methoxyphenyl)-1,3,8,8a-tetrahydroisoquinoline-5,7,7-tricarbonitrile293751-79-8C21H21N5O
- 1-(4-Butylphenyl)-N-(2-cyanophenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide904813-40-7C21H21N5O
- N-[N'-(4,6-Dimethylpyrimidin-2-yl)-N-(4-methylphenyl)carbamimidoyl]benzamide351498-78-7C21H21N5O
- 1-[8-(4-Amino-piperidin-1-yl)-quinolin-2-yl]-1H-benzoimidazol-5-ol343786-56-1C21H21N5O
- 2-Benzyl-5-(1-(4-isopropylphenyl)-5-methyl-1H-1,2,3-triazol-4-yl)-1,3,4-oxadiazole1081130-41-7C21H21N5O
- N-(4-(6-(Piperidin-1-yl)pyridazin-3-yl)phenyl)picolinamide1203350-50-8C21H21N5O
- 5-Methyl-7-[(2-methylphenyl)amino]-2-(2-phenylethyl)-2H,3H-[1,2,4]triazolo[4,3-a]pyrimidin-3-one1251626-92-2C21H21N5O
- 2-(2,4-Dimethylpyrimido[1,2-b]indazol-3-yl)-N-[2-(4-pyridyl)ethyl]acetamide1401560-28-8C21H21N5O
- (1-Methyl-1H-indol-2-yl)(4-[1,2,4]triazolo[4,3-a]pyridin-3-ylpiperidino)methanone1435978-37-2C21H21N5O
- 2-(2,4-Dimethylpyrimido[1,2-b]indazol-3-yl)-N-[2-(2-pyridyl)ethyl]acetamide1401541-18-1C21H21N5O
- N-(1H-1,3-Benzimidazol-2-ylmethyl)-3-isopropyl-1-phenyl-1H-pyrazole-5-carboxamide1574494-35-1C21H21N5O
- N-(3-(1H-Pyrrolo[2,3-b]pyridin-1-yl)propyl)-5-methyl-1-phenyl-1H-pyrazole-4-carboxamide1787918-72-2C21H21N5O
- 5-[(4-Phenylpiperazin-1-yl)methyl]-1,5-dihydro-6H-[1,2]diazepino[4,5,6-cd]indol-6-one1401579-94-9C21H21N5O
- Pyridin-2-yl(4-(6-(o-tolyl)pyridazin-3-yl)piperazin-1-yl)methanone1021256-80-3C21H21N5O
- 1,6-Dimethyl-N-[1-[3-(1H-pyrrol-1-yl)phenyl]ethyl]-1H-pyrazolo[3,4-b]pyridine-4-carboxamide1011397-98-0C21H21N5O
- 8-(3-Piperidinylmethoxy)-2-(1,2,4-triazolo[4,3-a]pyridin-3-yl)quinoline1209778-95-9C21H21N5O
- 1-(Propan-2-yl)-N-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]-1H-indole-5-carboxamide1401537-04-9C21H21N5O
- 8-(4-Piperidinylmethoxy)-2-(1,2,4-triazolo[4,3-a]pyridin-3-yl)quinoline1209778-93-7C21H21N5O
- 5-[3-(1-Methyl-4-piperidinyl)-6-quinoxalinyl]-2-benzoxazolamine1268458-05-4C21H21N5O
- 1-(Propan-2-yl)-N-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]-1H-indole-6-carboxamide1436003-76-7C21H21N5O
- (E)-1-(4-(6-(1H-Pyrrol-1-yl)pyridazin-3-yl)piperazin-1-yl)-3-phenylprop-2-en-1-one1396891-77-2C21H21N5O
- 1-(1,3,4,9-Tetrahydro-2H-beta-carbolin-2-yl)-4-([1,2,4]triazolo[4,3-a]pyridin-3-yl)butan-1-one1574409-84-9C21H21N5O
- 2,5-Dimethyl-N-phenyl-7-(p-tolyl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide899997-45-6C21H21N5O
- 3-[6-(4-Methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1H-cyclohepta[b]pyrrol-2-one1253836-17-7C21H21N5O
- 3-(3,4-Dimethylphenyl)-6-[(2,5-dimethylphenyl)methyl]triazolo[4,5-d]pyrimidin-7-one893918-84-8C21H21N5O
- N-{1-Methyl-2-[2-(2-methyl-1H-imidazol-1-yl)ethyl]-1H-benzimidazol-5-yl}benzamide903189-79-7C21H21N5O
- 7-(4-Methoxyphenyl)-5,6-dimethyl-N-(pyridin-4-ylmethyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine921126-92-3C21H21N5O
- 7-Cycloheptyl-2-phenylpyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidin-6(7H)-one929867-26-5C21H21N5O
- 7-(4-Methoxyphenyl)-5,6-dimethyl-N-(pyridin-2-ylmethyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine929808-24-2C21H21N5O
- 1-(4-{5-[5-Methyl-1-(4-methylbenzyl)-1H-pyrazol-3-yl]-1,2,4-oxadiazol-3-yl}phenyl)methanamine1085453-09-3C21H21N5O
- 4-(1-Methyl-1H-indol-3-yl)-N-[3-(1H-1,2,4-triazol-3-yl)phenyl]butanamide1401593-45-0C21H21N5O
- 1-(Propan-2-yl)-N-[4-(1H-1,2,4-triazol-1-ylmethyl)phenyl]-1H-indole-4-carboxamide1436002-16-2C21H21N5O
- N-(3-{2-Methylpyrazolo[1,5-a]pyrimidin-6-yl}propyl)-4-(1H-pyrrol-1-yl)benzamide1796946-18-3C21H21N5O
- 2-Methyl-N-(3-(2-methylpyrazolo[1,5-a]pyrimidin-6-yl)propyl)quinoline-8-carboxamide1797710-97-4C21H21N5O
- 7-(2-Methoxyphenyl)-5,6-dimethyl-N-(pyridin-4-ylmethyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine951944-35-7C21H21N5O
- 1-(6-Phenylpyridazin-3-yl)-N-(pyridin-4-yl)piperidine-4-carboxamide1202985-84-9C21H21N5O
- 2-Methyl-N-[2-methyl-1-([1,2,4]triazolo[4,3-a]pyridin-3-yl)propyl]quinoline-4-carboxamide1040707-30-9C21H21N5O
- 5-Amino-3-(4-phenoxy-phenyl)-1-piperidin-3-yl-1H-pyrazole-4-carbonitrile1609467-44-8C21H21N5O
- 6-Methyl-2-{4-[(4-oxo-3,4-dihydroquinazolin-3-yl)methyl]piperidin-1-yl}pyridine-3-carbonitrile2549054-21-7C21H21N5O
- 3-[5-(6-Methyl-1-pyridin-2-ylmethyl-piperidin-2-yl)-[1,2,4]oxadiazol-3-yl]-benzonitrile661458-72-6C21H21N5O
- 4-(4-Phenyl-2-pyrimidinyl)-N-3-pyridinyl-1-piperidinecarboxamide1228456-38-9C21H21N5O
- N-(1-Cyano-2,2-dimethylpropyl)-1,5-diphenyl-1H-1,2,4-triazole-3-carboxamide1384791-16-5C21H21N5O
- 1-[4-[(2-Ethyl-5,7-dimethylpyrazolo[1,5-a]pyrimidin-3-yl)methyl]phenyl]-1H-pyrazole-4-carboxaldehyde1401728-79-7C21H21N5O
- 6-[4-(1H-Pyrazol-5-yl)phenoxy]-2-(pyrrolidin-1-ylmethyl)-1H-benzimidazole1541185-01-6C21H21N5O
- N4-(4-Phenoxyphenyl)-5-(1,2,5,6-tetrahydro-3-pyridinyl)-4,6-pyrimidinediamine1415825-45-4C21H21N5O
- N-(1-Cyanocyclohexyl)-3-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyridine-6-carboxamide1947072-78-7C21H21N5O
- N-Methyl-N-[1-(6-phenylpyridazin-3-yl)azetidin-3-yl]-2-(pyridin-3-yl)acetamide2380086-40-6C21H21N5O
- 4-(4-Phenyl-7-pyridin-4-yl-5,6-dihydropyrrolo[2,3-d]pyrimidin-2-yl)morpholine1007206-75-8C21H21N5O
- N-Benzyl-N-{2-[(3-cyano-6-methylquinolin-2-yl)amino]ethyl}urea606105-30-0C21H21N5O
- N-Benzyl-N-{2-[(3-cyano-8-methylquinolin-2-yl)amino]ethyl}urea606104-92-1C21H21N5O
- N-{2-[(3-Cyano-8-methylquinolin-2-yl)amino]ethyl}-N-(2-methylphenyl)urea606104-90-9C21H21N5O
- N-{2-[(3-Cyano-8-methylquinolin-2-yl)amino]ethyl}-N-(4-methylphenyl)urea606104-88-5C21H21N5O
- 2-{1-[(3-Pyridin-3-ylisoxazol-5-yl)methyl]piperidin-2-yl}-1H-benzimidazole2060800-00-0C21H21N5O
- 4-[2-(4-{(E)-[4-(Dimethylamino)phenyl]diazenyl}phenyl)hydrazinylidene]-3-methylcyclohexa-2,5-dien-1-one94717-98-3C21H21N5O
- 5-Methyl-1-(1-(quinazolin-4-yl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one219324-40-0C21H21N5O
- 2-{4-[(2-Methyl-4-oxo-3,4-dihydroquinazolin-3-yl)methyl]piperidin-1-yl}pyridine-3-carbonitrile2415470-17-4C21H21N5O
- 2-{4-[(2-Methyl-4-oxo-3,4-dihydroquinazolin-3-yl)methyl]piperidin-1-yl}pyridine-4-carbonitrile2415464-06-9C21H21N5O
- 6-{4-[(2-Methyl-4-oxo-3,4-dihydroquinazolin-3-yl)methyl]piperidin-1-yl}pyridine-2-carbonitrile2415570-72-6C21H21N5O
- 3-{4-[(2-Methyl-4-oxo-3,4-dihydroquinazolin-3-yl)methyl]piperidin-1-yl}pyridine-4-carbonitrile2415501-25-4C21H21N5O
- 4-{4-[(2-Methyl-4-oxo-3,4-dihydroquinazolin-3-yl)methyl]piperidin-1-yl}pyridine-2-carbonitrile2415522-50-6C21H21N5O
- 6-Cyclopropyl-2-[1-(pyrimidine-2-carbonyl)piperidin-4-yl]-1,8-naphthyridine2742022-85-9C21H21N5O
- 6-Cyclopropyl-2-[1-(pyrimidine-5-carbonyl)piperidin-4-yl]-1,8-naphthyridine2741957-54-8C21H21N5O
- 6-Cyclopropyl-2-[1-(pyrazine-2-carbonyl)piperidin-4-yl]-1,8-naphthyridine2742039-69-4C21H21N5O
- 6-Cyclopropyl-2-[1-(pyrimidine-4-carbonyl)piperidin-4-yl]-1,8-naphthyridine2742040-84-0C21H21N5O
- 2-(1-{Pyrido[3,4-d]pyrimidin-4-yl}pyrrolidine-3-carbonyl)-1,2,3,4-tetrahydroisoquinoline3054556-79-2C21H21N5O
- 2-[3-(2,6-Dimethylpyrimidin-4-yl)-3,6-diazabicyclo[3.1.1]heptane-6-carbonyl]quinoline3054591-75-9C21H21N5O
- 3-(6-Methylpyrimidin-4-yl)-6-[4-(1H-pyrrol-1-yl)benzoyl]-3,6-diazabicyclo[3.1.1]heptane3054580-72-9C21H21N5O
- (5Z)-2-Amino-5-{[5-(diethylamino)-2-furyl]methylene}-4,6-dimethyl-5H-cyclopenta[b]pyridine-3,7-dicarbonitrile366469-49-0C21H21N5O
Frequently asked questions
What is the molar mass of C21H21N5O?
The molar mass of C21H21N5O is 359.43 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 359.1746 Da.
How many compounds have the formula C21H21N5O?
CompoundList lists 97 compounds with the molecular formula C21H21N5O, including 4-Tert-Butyl-N-[6-(1H-Imidazol-1-Yl)imidazo[1,2-A]pyridin-2-Yl]benzamide, 2-[(2,3-Dimethylphenyl)amino]-8-methyl-4-phenyl-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one, 2-(Benzylamino)-8-methyl-4-(4-methylphenyl)-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-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 C21H21N5O?
C21H21N5O has a degree of unsaturation of 14. 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.