Molecular formula
C21H16N4O3
85 compounds have this formula on CompoundList.
- Molar mass
- 372.38g/mol
- Monoisotopic mass
- 372.1222Da
- Atoms
- 44
- Elements
- 4
- Rings plus double bonds
- 16
The formula C21H16N4O3 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms and 3 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 × 2167.73%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 164.33%1.008 × 16 = 16.128 g/mol
- N Nitrogen × 415.05%14.007 × 4 = 56.028 g/mol
- O Oxygen × 312.89%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C21H16N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 85 of 85 compounds
N-(2-Phenyl-5-benzotriazolyl)-2,3-dihydro-1,4-benzodioxin-6-carboxamide
CAS 313700-86-6C21H16N4O3
Alantrypinone
CAS 212911-06-3C21H16N4O3
![N-Naphthalen-1-yl-2-[5-(4-nitrophenyl)imidazol-1-yl]acetamide chemical structure, C21H16N4O3, CAS 400066-91-3](/s/YFJXLLCMAVPRLR-UHFFFAOYSA-N.svg)
N-Naphthalen-1-yl-2-[5-(4-nitrophenyl)imidazol-1-yl]acetamide
CAS 400066-91-3C21H16N4O3
5-(Furan-2-carbonylamino)-N,1-diphenylpyrazole-4-carboxamide
CAS 301322-49-6C21H16N4O3
methyl}quinolin-8-ol chemical structure, C21H16N4O3, CAS 307341-91-9](/s/OXSXWEUVCNUZFS-UHFFFAOYSA-N.svg)
7-{[(4-Nitrophenyl)amino](pyridin-2-yl)methyl}quinolin-8-ol
CAS 307341-91-9C21H16N4O3
7-((3-Nitrophenyl)(pyridin-2-ylamino)methyl)quinolin-8-ol
CAS 328029-49-8C21H16N4O3
![N-(1,3-Benzodioxol-5-yl)-7-methyl-5-phenylpyrazolo[1,5-a]pyrimidine-2-carboxamide chemical structure, C21H16N4O3, CAS 312635-04-4](/s/ULVDPKIEXUBRBH-UHFFFAOYSA-N.svg)
N-(1,3-Benzodioxol-5-yl)-7-methyl-5-phenylpyrazolo[1,5-a]pyrimidine-2-carboxamide
CAS 312635-04-4C21H16N4O3
3-(2-Amino-5-nitrophenyl)-1-benzylquinoxalin-2-one
CAS 319490-42-1C21H16N4O3
2-(5-(Phenoxymethyl)furan-2-yl)-5-((pyridin-3-ylmethyl)amino)oxazole-4-carbonitrile
CAS 941968-96-3C21H16N4O3
![N-{7-Methyl-2-phenylimidazo[1,2-A]pyridin-3-YL}-4-nitrobenzamide chemical structure, C21H16N4O3, CAS 332384-16-4](/s/WILUMSZZONIWQS-UHFFFAOYSA-N.svg)
N-{7-Methyl-2-phenylimidazo[1,2-A]pyridin-3-YL}-4-nitrobenzamide
CAS 332384-16-4C21H16N4O3
![1-(3,5-Dimethoxyphenyl)-2-(furan-2-yl)-1H-imidazo[4,5-b]quinoxaline chemical structure, C21H16N4O3, CAS 799795-30-5](/s/ICZXPTMWDXFZAS-UHFFFAOYSA-N.svg)
1-(3,5-Dimethoxyphenyl)-2-(furan-2-yl)-1H-imidazo[4,5-b]quinoxaline
CAS 799795-30-5C21H16N4O3
![N-{7-Methyl-2-phenylimidazo[1,2-A]pyridin-3-YL}-3-nitrobenzamide chemical structure, C21H16N4O3, CAS 361996-38-5](/s/SWDBRICEIOBBAJ-UHFFFAOYSA-N.svg)
N-{7-Methyl-2-phenylimidazo[1,2-A]pyridin-3-YL}-3-nitrobenzamide
CAS 361996-38-5C21H16N4O3
![7-(3-Nitrophenyl)-4-(pyridin-3-yl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(13),4,9,11-tetraene chemical structure, C21H16N4O3, CAS 868155-37-7](/s/LSNQSDKXABQFFM-UHFFFAOYSA-N.svg)
7-(3-Nitrophenyl)-4-(pyridin-3-yl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(13),4,9,11-tetraene
CAS 868155-37-7C21H16N4O3
2-(2-Hydroxy-5-nitro-biphenyl-3-yl)-1H-indole-5-carboxamidine
CAS 360791-85-1C21H16N4O3
![N-(2-(1H-Imidazol-1-yl)quinolin-8-yl)-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide chemical structure, C21H16N4O3, CAS 1226457-73-3](/s/QFFSHFQDSZLIAK-UHFFFAOYSA-N.svg)
N-(2-(1H-Imidazol-1-yl)quinolin-8-yl)-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide
CAS 1226457-73-3C21H16N4O3
7-((4-Nitrophenyl)(pyridin-2-ylamino)methyl)quinolin-8-ol
CAS 315234-83-4C21H16N4O3
(Z)-Methyl 2-(2-cyano-3-(3-phenyl-1H-pyrazol-4-yl)acrylamido)benzoate
CAS 1007192-43-9C21H16N4O3
3-Nitro-1-phenyl-4-((pyridin-3-ylmethyl)amino)quinolin-2(1H)-one
CAS 886157-84-2C21H16N4O3
(E)-N'-(2,4-Dihydroxybenzylidene)-3-(naphthalen-2-yl)-1H-pyrazole-5-carbohydrazide
CAS 1310359-34-2C21H16N4O3
![N-(Benzo[d][1,3]dioxol-5-yl)-2-(2-(pyridin-3-yl)-1H-benzo[d]imidazol-1-yl)acetamide chemical structure, C21H16N4O3, CAS 1105240-52-5](/s/HUVASTFCTCIFLK-UHFFFAOYSA-N.svg)
N-(Benzo[d][1,3]dioxol-5-yl)-2-(2-(pyridin-3-yl)-1H-benzo[d]imidazol-1-yl)acetamide
CAS 1105240-52-5C21H16N4O3
1,8-Naphthyridine-3-carboxamide, 1,2-dihydro-4-hydroxy-2-oxo-1-phenyl-N-(4-pyridinylmethyl)-
CAS 138305-14-3C21H16N4O3
1,8-Naphthyridine-3-carboxamide, 1,2-dihydro-4-hydroxy-2-oxo-1-phenyl-N-(3-pyridinylmethyl)-
CAS 138305-15-4C21H16N4O3
![2-(1,6-Diphenyl-1H-imidazo[4,5-c]pyridine-4-carboxamido)acetic acid chemical structure, C21H16N4O3, CAS 1078168-06-5](/s/WGYLKBODGCGXHY-UHFFFAOYSA-N.svg)
2-(1,6-Diphenyl-1H-imidazo[4,5-c]pyridine-4-carboxamido)acetic acid
CAS 1078168-06-5C21H16N4O3
![Methyl 4-(6-amino-5-cyano-3-phenyl-2,4-dihydropyrano[2,3-c]pyrazol-4-yl)benzoate chemical structure, C21H16N4O3, CAS 369399-05-3](/s/BONSHFTVXCKZDZ-UHFFFAOYSA-N.svg)
Methyl 4-(6-amino-5-cyano-3-phenyl-2,4-dihydropyrano[2,3-c]pyrazol-4-yl)benzoate
CAS 369399-05-3C21H16N4O3
- N-[5-(1H-Benzimidazol-2-yl)-2-methylphenyl]-4-nitrobenzamide312633-29-7C21H16N4O3
- (4-Methoxyphenyl){3-[4-(2-pyrimidinyloxy)phenyl]-1H-pyrazol-1-yl}methanone321998-83-8C21H16N4O3
- 6-Amino-4-(1,3-benzodioxol-5-yl)-3-methyl-1-phenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile313702-96-4C21H16N4O3
- 5-[[3-(4-Methylphenyl)-1-phenylpyrazol-4-yl]methylidene]-1,3-diazinane-2,4,6-trione380450-24-8C21H16N4O3
- 2-Benzyl-4-methyl-7-phenylpurino[8,7-b][1,3]oxazole-1,3-dione902307-35-1C21H16N4O3
- N-(2-Methyl-1-phenyl-1H-benzo[d]imidazol-5-yl)-4-nitrobenzamide313535-67-0C21H16N4O3
- N-[2-[3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]phenyl]pyridine-4-carboxamide902025-54-1C21H16N4O3
- N-(4-{Imidazo[1,2-A]pyridin-2-YL}phenyl)-2-methyl-3-nitrobenzamide873577-98-1C21H16N4O3
- 2-Methoxy-N-{2-[3-(2-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}benzamide1120265-96-4C21H16N4O3
- 2-Methoxy-N-{2-[3-(3-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}benzamide1119433-79-2C21H16N4O3
- 4-Methoxy-N-{2-[3-(2-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}benzamide1119413-01-2C21H16N4O3
- 2-[2-Oxo-3-(3-phenyl-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl]-N-phenylacetamide1105214-30-9C21H16N4O3
- 1,3-Dioxo-N,2-bis(3-pyridinylmethyl)-5-isoindolinecarboxamide667434-70-0C21H16N4O3
- N-(2-Methyl-1-phenylbenzimidazol-5-yl)-3-nitrobenzamide313241-54-2C21H16N4O3
- 6-(4-Methyl-6-phenoxypyrimidin-2-yl)oxy-2-phenylpyridazin-3-one897006-13-2C21H16N4O3
- 1-(2-Oxo-2-phenylethyl)-3-(pyridin-4-ylmethyl)pyrido[3,2-d]pyrimidine-2,4(1H,3H)-dione941902-78-9C21H16N4O3
- 2-Methoxy-N-{2-[3-(4-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}benzamide1119412-81-5C21H16N4O3
- 3-Methoxy-N-{2-[3-(4-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}benzamide1119412-93-9C21H16N4O3
- 4-Methoxy-N-{2-[3-(3-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}benzamide1120266-07-0C21H16N4O3
- 4-Methoxy-N-{2-[3-(4-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}benzamide1119434-11-5C21H16N4O3
- 2-Phenoxy-N-{2-[3-(3-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}acetamide1119435-79-8C21H16N4O3
- 2-Phenoxy-N-{2-[3-(4-pyridinyl)-1,2,4-oxadiazol-5-yl]phenyl}acetamide1119414-03-7C21H16N4O3
- (E)-3-(3-(2,5-Dioxopyrrolidin-1-yl)phenyl)-2-(1-methyl-1H-benzo[d]imidazol-2(3H)-ylidene)-3-oxopropanenitrile476322-99-3C21H16N4O3
- 3-[1-(3-Methoxybenzoyl)-1H-pyrazol-3-yl]-1-phenyl-4(1H)-pyridazinone318497-99-3C21H16N4O3
- 2-(4-Oxo-1,2,3-benzotriazin-3(4H)-yl)-N-(4-phenoxyphenyl)acetamide879766-94-6C21H16N4O3
- 4-(4-Anilino-3-nitrophenyl)-2-methylphthalazin-1-one684235-20-9C21H16N4O3
- 6-Amino-3-(1,3-benzodioxol-5-yl)-4-(3-methylphenyl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile665000-80-6C21H16N4O3
- N-(5-(Imidazo[1,2-a]pyrimidin-2-yl)-2-methylphenyl)benzo[d][1,3]dioxole-5-carboxamide862810-27-3C21H16N4O3
- 5-Cyclopropyl-N-(2-oxo-2H-chromen-6-yl)-1-phenyl-1H-1,2,3-triazole-4-carboxamide954306-55-9C21H16N4O3
- 3-Methoxy-N-{2-[3-(pyridin-2-yl)-1,2,4-oxadiazol-5-yl]phenyl}benzamide1120266-00-3C21H16N4O3
- N-[2-[3-(Phenoxymethyl)-1,2,4-oxadiazol-5-yl]phenyl]pyridine-3-carboxamide1120234-42-5C21H16N4O3
- N-(4-((6-Methylpyridazin-3-yl)amino)phenyl)-2-oxo-2H-chromene-3-carboxamide1203169-21-4C21H16N4O3
- N-(6-(1H-Indol-1-yl)pyrimidin-4-yl)-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide1428372-84-2C21H16N4O3
- 3-(3-Methoxyphenyl)-5-(4-nitrophenyl)-4-phenyl-4H-1,2,4-triazole62507-58-8C21H16N4O3
- N-(4-Carbamoylphenyl)-3-methyl-6-phenyl[1,2]oxazolo[5,4-b]pyridine-4-carboxamide1190289-39-4C21H16N4O3
- (E)-3-(Furan-2-yl)-N-(2-((3-(pyridin-3-yl)-1,2,4-oxadiazol-5-yl)methyl)phenyl)acrylamide1798417-67-0C21H16N4O3
- 2-Oxo-6-(3-(pyridin-2-yloxy)benzoyl)-1,2,5,6,7,8-hexahydro-1,6-naphthyridine-3-carbonitrile2034356-96-0C21H16N4O3
- N-{[3-(Furan-3-yl)pyrazin-2-yl]methyl}-3-(pyridin-2-yloxy)benzamide2034236-80-9C21H16N4O3
- N-(7-Methyl-2-phenylimidazo[1,2-a]pyridin-3-yl)-2-nitrobenzamide373374-59-5C21H16N4O3
- 2-Oxo-2-(2-phenyl-1H-indol-3-yl)ethyl 3-aminopyrazine-2-carboxylate872028-89-2C21H16N4O3
- 1-(2-Oxo-2-phenylethyl)-3-(pyridin-2-ylmethyl)pyrido[3,2-d]pyrimidine-2,4(1H,3H)-dione941901-67-3C21H16N4O3
- 1-(2-Oxo-2-phenylethyl)-3-(pyridin-3-ylmethyl)pyrido[3,2-d]pyrimidine-2,4(1H,3H)-dione941902-15-4C21H16N4O3
- 5-{2-[(Pyridin-4-ylmethyl)-carbamoyl]-pyridin-4-yl}-1H-indole-2-carboxylic acid1222173-77-4C21H16N4O3
- N-Benzyl-N-(cyanomethyl)-6-(furan-2-yl)-3-methyl-[1,2]oxazolo[5,4-b]pyridine-4-carboxamide1197718-33-4C21H16N4O3
- (Z)-3-(1,3-Benzodioxol-5-yl)-2-cyano-N-(5-methyl-2-phenylpyrazol-3-yl)prop-2-enamide882225-09-4C21H16N4O3
- 2-Cyano-3-[3-(2,3-dihydro-1,4-benzodioxin-6-yl)-1-phenyl-1H-pyrazol-4-yl]prop-2-enamide387846-15-3C21H16N4O3
- 3-(1,3-Benzodioxol-5-yl)-2-cyano-N-(5-methyl-2-phenylpyrazol-3-yl)prop-2-enamideC21H16N4O3
- N-[3-(2-{[5-(2-Cyanophenyl)furan-2-yl]methylidene}hydrazinecarbonyl)phenyl]acetamide5391-27-5C21H16N4O3
- 1H-1,2,4-Triazole, 5-(4-methoxyphenyl)-1-(4-nitrophenyl)-3-phenyl-67400-60-6C21H16N4O3
- 3(2H)-Benzoxazoleacetamide, 2-oxo-N-[4-(2-phenyldiazenyl)phenyl]-1013257-28-7C21H16N4O3
- 7-(Benzyloxy)-6-(3-nitrophenyl)quinazolin-2-amine914395-98-5C21H16N4O3
- Methyl 6-(6-(6-acetylpyridin-2-yl)-1H-indazol-1-yl)picolinate1864772-53-1C21H16N4O3
- 4-(1H-Imidazo[4,5-f][1,10]phenanthrolin-2-yl)-2,6-dimethoxyphenol944834-19-9C21H16N4O3
- 2-Propenamide, 3-(4-nitrophenyl)-N-[4-(2-phenyldiazenyl)phenyl]-476317-16-5C21H16N4O3
- 2-Propenamide, 3-(3-nitrophenyl)-N-[4-(2-phenyldiazenyl)phenyl]-570417-35-5C21H16N4O3
- N-[4-[(5-Hydroxy-7-oxo-8H-1,8-naphthyridin-4-yl)amino]phenyl]benzamide1203510-27-3C21H16N4O3
- 2-{(E)-[2-Oxo-2-phenyl-1-(2-phenylhydrazinylidene)ethyl]diazenyl}benzoic acid166743-85-7C21H16N4O3
- N-(5-Oxo-3-phenyl-1,2,4-oxadiazol-4(5H)-yl)-N,N'-diphenylurea63592-43-8C21H16N4O3
- (9H-Fluoren-9-yl)methyl N-{3-hydroxy-[1,2,4]triazolo[4,3-a]pyridin-6-yl}carbamate2763903-05-3C21H16N4O3
- (9H-Fluoren-9-yl)methyl N-{4-hydroxy-1H-pyrazolo[4,3-c]pyridin-3-yl}carbamate2764010-50-4C21H16N4O3
- (E)-3-(1,3-Benzodioxol-5-yl)-2-cyano-N-(5-methyl-2-phenylpyrazol-3-yl)prop-2-enamideC21H16N4O3
Frequently asked questions
What is the molar mass of C21H16N4O3?
The molar mass of C21H16N4O3 is 372.38 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 372.1222 Da.
How many compounds have the formula C21H16N4O3?
CompoundList lists 85 compounds with the molecular formula C21H16N4O3, including N-(2-Phenyl-5-benzotriazolyl)-2,3-dihydro-1,4-benzodioxin-6-carboxamide, Alantrypinone, N-Naphthalen-1-yl-2-[5-(4-nitrophenyl)imidazol-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 C21H16N4O3?
C21H16N4O3 has a degree of unsaturation of 16. 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.