Molecular formula
C21H18N2O4
165 compounds have this formula on CompoundList.
- Molar mass
- 362.38g/mol
- Monoisotopic mass
- 362.1267Da
- Atoms
- 45
- Elements
- 4
- Rings plus double bonds
- 14
The formula C21H18N2O4 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 4 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 × 2169.60%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 185.01%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 27.73%14.007 × 2 = 28.014 g/mol
- O Oxygen × 417.66%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C21H18N2O4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 165 compounds
Homocamptothecin
CAS 186669-19-2C21H18N2O4
(±)-Homocamptothecin
CAS 50906-88-2C21H18N2O4
4-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-1-methyl-1H-pyrrole-2-carboxylic acid
CAS 195387-29-2C21H18N2O4
![2-Ethyl-3-[(4-methoxyphenyl)methyl][1]benzopyrano[2,3-d]pyrimidine-4,5-dione chemical structure, C21H18N2O4, CAS 900257-96-7](/s/OUDFIOVNIWPUCQ-UHFFFAOYSA-N.svg)
2-Ethyl-3-[(4-methoxyphenyl)methyl][1]benzopyrano[2,3-d]pyrimidine-4,5-dione
CAS 900257-96-7C21H18N2O4
N-(4-Acetamidophenyl)-2-oxo-8-prop-2-enylchromene-3-carboxamide
CAS 325802-80-0C21H18N2O4
![N-[2-(1H-Indol-3-yl)ethyl]-8-methoxy-2-oxo-2H-chromene-3-carboxamide chemical structure, C21H18N2O4, CAS 846601-32-9](/s/DRJJBMDKAMCMNT-UHFFFAOYSA-N.svg)
N-[2-(1H-Indol-3-yl)ethyl]-8-methoxy-2-oxo-2H-chromene-3-carboxamide
CAS 846601-32-9C21H18N2O4
![[3-(2-Methoxyphenyl)-4,5-dihydro-1,2-oxazol-5-yl]methyl quinoline-2-carboxylate chemical structure, C21H18N2O4, CAS 833429-77-9](/s/CHCAVISBWJCKDP-UHFFFAOYSA-N.svg)
[3-(2-Methoxyphenyl)-4,5-dihydro-1,2-oxazol-5-yl]methyl quinoline-2-carboxylate
CAS 833429-77-9C21H18N2O4
![N-(Furan-2-ylmethyl)-N-[(8-methyl-2-oxo-1H-quinolin-3-yl)methyl]furan-2-carboxamide chemical structure, C21H18N2O4, CAS 577757-88-1](/s/YFNBCQWYABTDPV-UHFFFAOYSA-N.svg)
N-(Furan-2-ylmethyl)-N-[(8-methyl-2-oxo-1H-quinolin-3-yl)methyl]furan-2-carboxamide
CAS 577757-88-1C21H18N2O4
![4-(1,3-Dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)-N-(furan-2-ylmethyl)butanamide chemical structure, C21H18N2O4, CAS 309735-94-2](/s/ONZVUZQCOZTTDS-UHFFFAOYSA-N.svg)
4-(1,3-Dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)-N-(furan-2-ylmethyl)butanamide
CAS 309735-94-2C21H18N2O4
2-(3-Methylbutyl)-5-(4-oxo-3,1-benzoxazin-2-yl)isoindole-1,3-dione
CAS 354120-42-6C21H18N2O4
![6-[[4-(4-Cyanophenoxy)phenyl]carbamoyl]cyclohex-3-ene-1-carboxylic acid chemical structure, C21H18N2O4, CAS 333432-15-8](/s/ZOXFXPZJXICCBF-UHFFFAOYSA-N.svg)
6-[[4-(4-Cyanophenoxy)phenyl]carbamoyl]cyclohex-3-ene-1-carboxylic acid
CAS 333432-15-8C21H18N2O4
![N-[4-(Benzyloxy)phenyl]-4-methyl-3-nitrobenzamide chemical structure, C21H18N2O4, CAS 349396-42-5](/s/RMVNLDKQQTWBEI-UHFFFAOYSA-N.svg)
N-[4-(Benzyloxy)phenyl]-4-methyl-3-nitrobenzamide
CAS 349396-42-5C21H18N2O4
N-(2-(7-Methoxy-2-oxo-1,2-dihydroquinolin-3-yl)ethyl)benzofuran-2-carboxamide
CAS 851406-32-1C21H18N2O4
![3,5-Dimethoxy-N-[4-(pyridine-4-carbonyl)phenyl]benzamide chemical structure, C21H18N2O4, CAS 676613-25-5](/s/UTOBECVRGPSJTG-UHFFFAOYSA-N.svg)
3,5-Dimethoxy-N-[4-(pyridine-4-carbonyl)phenyl]benzamide
CAS 676613-25-5C21H18N2O4
3-Methyl-4-nitro-N-(4-phenylmethoxyphenyl)benzamide
CAS 329941-02-8C21H18N2O4
1-(3-Nitrophenyl)-3-(4-phenoxyanilino)-1-propanone
CAS 477334-13-7C21H18N2O4
2-Oxo-2-phenylethyl 4-oxo-4-(quinolin-8-ylamino)butanoate
CAS 434304-90-2C21H18N2O4
![2-Benzyl-9-(3,6-dioxocyclohexa-1,4-dien-1-yl)-3,6,7,8-tetrahydropyrido[1,2-a]pyrazine-1,4-dione chemical structure, C21H18N2O4, CAS 565418-83-9](/s/FHHRXCGEIWKTJD-UHFFFAOYSA-N.svg)
2-Benzyl-9-(3,6-dioxocyclohexa-1,4-dien-1-yl)-3,6,7,8-tetrahydropyrido[1,2-a]pyrazine-1,4-dione
CAS 565418-83-9C21H18N2O4
N,N'-Bis(phenoxycarbonyl)-4-methyl-1,3-phenylenediamine
CAS 4223-24-9C21H18N2O4
N-(2,4-Dimethylphenyl)-3-(5-(3-nitrophenyl)-2-furyl)-2-propenamide
CAS 853351-23-2C21H18N2O4
alpha-Aminoorcein
CAS 642-61-5C21H18N2O4
N-(2-Ethylphenyl)-3-(5-(2-nitrophenyl)-2-furyl)-2-propenamide
CAS 853347-84-9C21H18N2O4
N-(2,6-Dimethylphenyl)-3-(5-(3-nitrophenyl)-2-furyl)-2-propenamide
CAS 853351-27-6C21H18N2O4
N'-(4-(Benzyloxy)benzylidene)-2,4-dihydroxybenzohydrazide
CAS 478534-21-3C21H18N2O4
- (±)-E-Homocamptothecin186668-40-6C21H18N2O4
- 1-(4-{[4-(2,5-Dioxopyrrolidin-1-yl)phenyl]methyl}phenyl)pyrrolidine-2,5-dione17655-94-6C21H18N2O4
- N-1,3-Benzodioxol-5-yl-1-(4-methylbenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide946221-21-2C21H18N2O4
- 2,6-Dimethoxy-N-[4-(pyridine-4-carbonyl)phenyl]benzamide728027-29-0C21H18N2O4
- EP3 antagonist 31227827-88-4C21H18N2O4
- 1-Benzyl-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-oxo-1,2-dihydropyridine-3-carboxamide946244-93-5C21H18N2O4
- N-((1S,2R)-2-Hydroxy-1-((hydroxyamino)carbonyl)propyl)-4-(4-phenyl-1,3-butadiyn-1-yl)benzamide728865-26-7C21H18N2O4
- N-(2-Methoxy-5-nitrophenyl)-2,2-diphenylacetamide349644-60-6C21H18N2O4
- N-(2-Methyl-4-nitrophenyl)-4-phenylmethoxybenzamide432541-75-8C21H18N2O4
- 4-Methoxy-~{N}-oxidanyl-3-[(4-phenylphenyl)carbonylamino]benzamide1884231-36-0C21H18N2O4
- Quinolin-8-yl 3-(1,3-dioxo-1,3,3a,4,7,7a-hexahydro-2H-4,7-methanoisoindol-2-yl)propanoate1005151-13-2C21H18N2O4
- (5-Phenyl-1,2-oxazol-3-yl)methyl 5-oxo-1-phenylpyrrolidine-3-carboxylate946346-74-3C21H18N2O4
- 1H-Pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4H,12H)-dione, 4-ethyl-4-hydroxy-9-methyl-109467-01-8C21H18N2O4
- Zanthobisquinolone57147-67-8C21H18N2O4
- 2-Ethyl-8-methoxy-3-(p-tolyl)-3H-chromeno[2,3-d]pyrimidine-4,5-dione883955-60-0C21H18N2O4
- 3-(4-Oxo-4H-chromene-2-carbonyl)-3,4,5,6-tetrahydro-1H-1,5-methanopyrido[1,2-a][1,5]diazocin-8(2H)-one1251563-58-2C21H18N2O4
- Phenyl (1-(furan-2-carbonyl)-1,2,3,4-tetrahydroquinolin-7-yl)carbamate941944-95-2C21H18N2O4
- 2-(5-(Benzofuran-2-yl)isoxazol-3-yl)-N-(2-methoxybenzyl)acetamide1105243-78-4C21H18N2O4
- 4-(beta-(7-Dimethylamino-1,4-benzoxazin-2-one-3-yl)vinyl)phenylpropenoic acid126959-78-2C21H18N2O4
- 7-Methylcamptothecin78287-26-0C21H18N2O4
- 6-Ethyl-3-(1-methyl-1H-benzimidazol-2-yl)-4-oxo-4H-chromen-7-yl acetate210639-96-6C21H18N2O4
- N-(4-Methoxy-2-nitrophenyl)-2,2-diphenylacetamide339121-50-5C21H18N2O4
- Benzyl 3-(((benzyloxy)carbonyl)amino)picolinate1228956-95-3C21H18N2O4
- 1,4-Benzenedicarboxylic acid, 2-((4-methylphenyl)amino)-5-(phenylamino)-67906-32-5C21H18N2O4
- N-(1,2-Dihydroacenaphthylen-5-yl)-4-ethoxy-3-nitrobenzamide327052-62-0C21H18N2O4
- 3-(1H-Benzimidazol-2-yl)-6-ethyl-2-methyl-4-oxo-4H-chromen-7-yl acetate301159-84-2C21H18N2O4
- 2-[1-(Furan-2-carbonyl)-3-(4-methoxyphenyl)-4,5-dihydro-1H-pyrazol-5-yl]phenol364742-45-0C21H18N2O4
- 3-(1H-Indol-3-yl)-2-(2-methoxyethyl)-1-oxo-1,2-dihydroisoquinoline-4-carboxylic acid1119449-96-5C21H18N2O4
- 2-Isopropyl-8-methoxy-3-phenyl-3H-chromeno[2,3-d]pyrimidine-4,5-dione896839-74-0C21H18N2O4
- N-(2-Hydroxy-1,2-diphenylethyl)-4-nitrobenzamide7042-14-0C21H18N2O4
- 2-[4-(4-Methylphenyl)phenoxy]-N-(3-nitrophenyl)acetamide6136-57-8C21H18N2O4
- Methyl 2-{[(4-phenoxyphenyl)carbamoyl]amino}benzoate708218-77-3C21H18N2O4
- (4Z)-4-[(3-Ethoxy-4-prop-2-ynoxyphenyl)methylidene]-1-phenylpyrazolidine-3,5-dione433704-85-9C21H18N2O4
- N-(2,4-Dioxo-4-(phenylamino)butyl)-3-hydroxynaphthalene-2-carboxamide85750-34-1C21H18N2O4
- Ethyl 4-(benzoylamino)-2-cyano-3-hydroxy-5-phenyl-2,4-pentadienoate75989-96-7C21H18N2O4
- Methyl 6-(4-(((benzyloxy)carbonyl)amino)phenyl)picolinate1381944-48-4C21H18N2O4
- 1H-Pyrrolo[3,4-b]quinoline-1-carboxylic acid, 2,3,4,9-tetrahydro-1-methyl-3,9-dioxo-2-phenyl-, ethyl ester1379474-94-8C21H18N2O4
- 1H-Naphth[2,3-f]isoindole-1,3,5,10(2H)-tetrone, 2-[3-(dimethylamino)propyl]-71033-15-3C21H18N2O4
- 2,5-Pyrrolidinedione, 1,1'-(diphenylmethylene)bis-6622-10-2C21H18N2O4
- 4-Nitrobenzyl 1,2,3,4-tetrahydroacridine-9-carboxylate433327-54-9C21H18N2O4
- (E)-3-(Furan-2-yl)-N-[2-[[(E)-3-(furan-2-yl)prop-2-enoyl]amino]-4-methylphenyl]prop-2-enamide547730-36-9C21H18N2O4
- 4-(Benzyloxy)-N-(4-methyl-2-nitrophenyl)benzamide6117-17-5C21H18N2O4
- 8-Allyl-N'-(4-methylbenzoyl)-2-oxo-2H-chromene-3-carbohydrazide681479-55-0C21H18N2O4
- 9-Hydroxymethyl-2-(maleimidopropionylamino)fluorene778625-03-9C21H18N2O4
- N-(4-(Benzo[d][1,3]dioxol-5-yloxy)but-2-yn-1-yl)-2-(1H-indol-3-yl)acetamide1448051-05-5C21H18N2O4
- 2-[1-(Furan-2-carbonyl)-5-(4-methoxyphenyl)-4,5-dihydro-1H-pyrazol-3-yl]phenol876942-70-0C21H18N2O4
- 2-[5-(1,3-Dioxoisoindol-2-yl)pentyl]isoindole-1,3-dione982-50-3C21H18N2O4
- N-(4-Ethoxy-2-nitrophenyl)-[1,1'-biphenyl]-4-carboxamide303796-99-8C21H18N2O4
- 6-[(2-Hydroxyethyl)amino]-2-(4-methoxyphenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione709020-47-3C21H18N2O4
- N-[(E)-1-(Furan-2-yl)-3-(4-methoxyanilino)-3-oxoprop-1-en-2-yl]benzamide303099-80-1C21H18N2O4
- Methyl 4-((3-(pyridin-2-yloxy)benzyl)carbamoyl)benzoate1797891-13-4C21H18N2O4
- 4-Ethyl-4-hydroxy-12-methyl-1H-pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4H,12H)-dione86688-39-3C21H18N2O4
- 4-(4-Nitrophenyl)-1-phenyl-4,6,7,8-tetrahydroquinoline-2,5(1H,3H)-dione132600-17-0C21H18N2O4
- N-1,3-Benzodioxol-5-yl-1-(2-methylbenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide1005298-33-8C21H18N2O4
- Methyl 4-[(1-benzyl-6-oxopyridine-3-carbonyl)amino]benzoate1004256-23-8C21H18N2O4
- (4S)-4-Ethyl-4-methoxy-1H-pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4H,12H)-dione916236-87-8C21H18N2O4
- N-(2-Pyridinyl)-2-(3,5,9-trimethyl-7-oxo-7H-furo[3,2-g]chromen-6-yl)acetamide919744-50-6C21H18N2O4
- (2E)-2-[(1-Methyl-1H-indol-3-yl)methylidene]-3-oxo-2,3-dihydro-1-benzofuran-6-yl dimethylcarbamate929380-40-5C21H18N2O4
- N-{4-[(Cyclopropylcarbamoyl)methyl]phenyl}-2-oxo-2H-chromene-3-carboxamide1060247-20-2C21H18N2O4
- 2-(3,5-Dimethyl-7-oxo-7H-furo[3,2-g]chromen-6-yl)-N-(6-methyl-2-pyridyl)acetamide1010915-31-7C21H18N2O4
- 2-(5-(Benzo[d][1,3]dioxol-5-yl)isoxazol-3-yl)-1-(3,4-dihydroisoquinolin-2(1H)-yl)ethanone1170861-12-7C21H18N2O4
- (R)-Homocamptothecin502963-67-9C21H18N2O4
- 1-[1-(9H-Xanthene-9-carbonyl)azetidin-3-yl]pyrrolidine-2,5-dione1795362-75-2C21H18N2O4
- 2-Hydroxy-6-[6-(4-morpholinylcarbonyl)-2-pyridinyl]-1-naphthalenecarboxaldehyde1093119-45-9C21H18N2O4
- 6,7-Dimethoxy-8-((6-methoxyisoquinolin-7-yl)oxy)isoquinoline87179-86-0C21H18N2O4
- (5E)-1-(4-Methylphenyl)-5-[(4-prop-2-enoxyphenyl)methylidene]-1,3-diazinane-2,4,6-trione340229-65-4C21H18N2O4
- Methyl 1-(2,5-dimethoxyphenyl)-9H-pyrido[3,4-b]indole-3-carboxylate859111-42-5C21H18N2O4
- Methyl 4-[(1-benzyl-2-oxopyridine-3-carbonyl)amino]benzoate933205-27-7C21H18N2O4
- N-(1-Acetyl-1,2,3,4-tetrahydroquinolin-6-yl)-2-oxo-2H-chromene-3-carboxamide946245-27-8C21H18N2O4
- N-(Benzo[d][1,3]dioxol-5-yl)-1-(3-methylbenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide899754-08-6C21H18N2O4
- 3-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2,3-dihydro-2-(5-methyl-2-furanyl)-4(1H)-quinazolinone949259-82-9C21H18N2O4
- 6,7-Dimethoxy-4-(7-methoxy-quinolin-6-yloxy)-quinoline666732-14-5C21H18N2O4
- N-((5-(Benzofuran-2-yl)isoxazol-3-yl)methyl)-2-(o-tolyloxy)acetamide1105242-50-9C21H18N2O4
- N-((5-(Benzofuran-2-yl)isoxazol-3-yl)methyl)-2-(m-tolyloxy)acetamide1105206-31-2C21H18N2O4
- N-((5-(Benzofuran-2-yl)isoxazol-3-yl)methyl)-2-(p-tolyloxy)acetamide1105242-54-3C21H18N2O4
- N-((5-(Benzofuran-2-yl)isoxazol-3-yl)methyl)-2-(4-methoxyphenyl)acetamide1105242-74-7C21H18N2O4
Frequently asked questions
What is the molar mass of C21H18N2O4?
The molar mass of C21H18N2O4 is 362.38 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms and 4 oxygen atoms. The monoisotopic mass is 362.1267 Da.
How many compounds have the formula C21H18N2O4?
CompoundList lists 165 compounds with the molecular formula C21H18N2O4, including Homocamptothecin, (±)-Homocamptothecin, 4-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-1-methyl-1H-pyrrole-2-carboxylic acid. 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 C21H18N2O4?
C21H18N2O4 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.