Molecular formula
C18H19N3O3
401 compounds have this formula on CompoundList.
- Molar mass
- 325.37g/mol
- Monoisotopic mass
- 331.1803Da
- Atoms
- 43
- Elements
- 4
- Rings plus double bonds
- 11
The formula C18H19N3O3 describes a molecule made of 18 carbon atoms, 19 hydrogen atoms, 3 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 × 1866.45%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 195.89%1.008 × 19 = 19.152 g/mol
- N Nitrogen × 312.91%14.007 × 3 = 42.021 g/mol
- O Oxygen × 314.75%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C18H19N3O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 401 compounds
N-(4-Ethoxyphenyl)-2-(3-oxo-1,2,3,4-tetrahydroquinoxalin-2-yl)acetamide
CAS 40375-94-8C18H19N3O3
N-(2-Ethoxy-phenyl)-2-(3-oxo-1,2,3,4-tetrahydro-quinoxalin-2-yl)-acetamide
CAS 312713-89-6C18H19N3O3
1-(4-Methoxyphenyl)-N-(4-methyl-2-pyridinyl)-5-oxo-3-pyrrolidinecarboxamide
CAS 309734-04-1C18H19N3O3
![1-[4-(Morpholine-4-carbonyl)phenyl]-3-phenylurea chemical structure, C18H19N3O3, CAS 354766-81-7](/s/AJFZQQYWAWELBA-UHFFFAOYSA-N.svg)
1-[4-(Morpholine-4-carbonyl)phenyl]-3-phenylurea
CAS 354766-81-7C18H19N3O3
![Butanoic acid [2-oxo-2-(4-phenyldiazenylanilino)ethyl] ester chemical structure, C18H19N3O3, CAS 730948-65-9](/s/WOHVRQVPVZRUIK-UHFFFAOYSA-N.svg)
Butanoic acid [2-oxo-2-(4-phenyldiazenylanilino)ethyl] ester
CAS 730948-65-9C18H19N3O3
1-Benzyl-N5-cyclopropyl-N3-methyl-2-oxo-1,2-dihydropyridine-3,5-dicarboxamide
CAS 2088410-46-0C18H19N3O3
![N-[2-(1H-Benzimidazol-2-yl)ethyl]-2-(2-methoxyphenoxy)acetamide chemical structure, C18H19N3O3, CAS 302550-14-7](/s/XKTWYPOKNUIKAE-UHFFFAOYSA-N.svg)
N-[2-(1H-Benzimidazol-2-yl)ethyl]-2-(2-methoxyphenoxy)acetamide
CAS 302550-14-7C18H19N3O3
![1-[2-[(4-Methoxyphenyl)methyl]-2-methyl-5-pyridin-4-yl-1,3,4-oxadiazol-3-yl]ethanone chemical structure, C18H19N3O3, CAS 351338-99-3](/s/HROQBFAOTBDFQN-UHFFFAOYSA-N.svg)
1-[2-[(4-Methoxyphenyl)methyl]-2-methyl-5-pyridin-4-yl-1,3,4-oxadiazol-3-yl]ethanone
CAS 351338-99-3C18H19N3O3
![Ethyl 1-([1]benzofuro[3,2-d]pyrimidin-4-yl)piperidine-4-carboxylate chemical structure, C18H19N3O3, CAS 326034-04-2](/s/MOMLKVIZCNOQEP-UHFFFAOYSA-N.svg)
Ethyl 1-([1]benzofuro[3,2-d]pyrimidin-4-yl)piperidine-4-carboxylate
CAS 326034-04-2C18H19N3O3
![N-[4-(3-Benzoimidazol-1-yl-2-hydroxy-propoxy)-phenyl]-acetamide chemical structure, C18H19N3O3, CAS 613655-96-2](/s/FXXHEQMVWSTAOF-UHFFFAOYSA-N.svg)
N-[4-(3-Benzoimidazol-1-yl-2-hydroxy-propoxy)-phenyl]-acetamide
CAS 613655-96-2C18H19N3O3
1-Isonicotinoyl-4-(2-methoxybenzoyl)piperazine
CAS 333757-24-7C18H19N3O3
2-(4-(4-Nitrophenyl)piperazin-1-yl)-1-phenylethanone
CAS 457940-99-7C18H19N3O3
![[4-(4-Methylpiperazin-1-yl)-3-nitrophenyl]-phenylmethanone chemical structure, C18H19N3O3, CAS 6617-59-0](/s/IOIWNQFKYZGKBN-UHFFFAOYSA-N.svg)
[4-(4-Methylpiperazin-1-yl)-3-nitrophenyl]-phenylmethanone
CAS 6617-59-0C18H19N3O3
Ainuovirine
CAS 1097628-00-6C18H19N3O3
N-(7,7-Dimethyl-5-oxo-5,6,7,8-tetrahydroquinazolin-2-yl)-3-methoxybenzamide
CAS 774563-57-4C18H19N3O3
1-(1,3-Benzodioxol-5-ylmethyl)-4-(3-pyridinylcarbonyl)piperazine
CAS 355392-87-9C18H19N3O3
![N'-[(3Z)-1-(3-Methylbutyl)-2-oxo-1,2-dihydro-3H-indol-3-ylidene]furan-2-carbohydrazide chemical structure, C18H19N3O3, CAS 1164465-36-4](/s/BWQOHGWHQAHWNS-UHFFFAOYSA-N.svg)
N'-[(3Z)-1-(3-Methylbutyl)-2-oxo-1,2-dihydro-3H-indol-3-ylidene]furan-2-carbohydrazide
CAS 1164465-36-4C18H19N3O3
![1-[4-(4-Nitrophenyl)piperazin-1-yl]-2-phenylethanone chemical structure, C18H19N3O3, CAS 346723-57-7](/s/SOKFHYPVABOYOP-UHFFFAOYSA-N.svg)
1-[4-(4-Nitrophenyl)piperazin-1-yl]-2-phenylethanone
CAS 346723-57-7C18H19N3O3
![6,7-Dimethoxy-N-[(3-methoxyphenyl)methyl]quinazolin-4-amine chemical structure, C18H19N3O3, CAS 477855-24-6](/s/HKOFKFRLVXKYIE-UHFFFAOYSA-N.svg)
6,7-Dimethoxy-N-[(3-methoxyphenyl)methyl]quinazolin-4-amine
CAS 477855-24-6C18H19N3O3
![Ethyl [5-methyl-2-(4-methylphenyl)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidin-6-yl]acetate chemical structure, C18H19N3O3, CAS 528561-40-2](/s/RHTQFXCILLIJQC-UHFFFAOYSA-N.svg)
Ethyl [5-methyl-2-(4-methylphenyl)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidin-6-yl]acetate
CAS 528561-40-2C18H19N3O3
3-Nitro-N-(2-piperidin-1-ylphenyl)benzamide
CAS 443895-82-7C18H19N3O3
![2-[3-Cyano-4-(methoxymethyl)-6-methyl-2-oxopyridin-1-yl]-N-(3-methylphenyl)acetamide chemical structure, C18H19N3O3, CAS 727421-99-0](/s/GGZQTYWSMSBEGV-UHFFFAOYSA-N.svg)
2-[3-Cyano-4-(methoxymethyl)-6-methyl-2-oxopyridin-1-yl]-N-(3-methylphenyl)acetamide
CAS 727421-99-0C18H19N3O3
Asp-8477
CAS 906737-25-5C18H19N3O3
![6,7-Dimethoxy-N-[(4-methoxyphenyl)methyl]quinazolin-4-amine chemical structure, C18H19N3O3, CAS 167410-63-1](/s/ZEBFLWZYDDDVIL-UHFFFAOYSA-N.svg)
6,7-Dimethoxy-N-[(4-methoxyphenyl)methyl]quinazolin-4-amine
CAS 167410-63-1C18H19N3O3
- 1H-1,4,7-Benzotriazonine-2,5-dione, 3,4,6,7-tetrahydro-4-(4-ethoxyphenyl)-130604-31-8C18H19N3O3
- (4-Methyl-3-nitrophenyl)-(4-phenylpiperazin-1-yl)methanone329940-45-6C18H19N3O3
- 6,7-Dimethoxy-N-[(2-methoxyphenyl)methyl]quinazolin-4-amine672952-05-5C18H19N3O3
- 2-[1-(2-Cyano-3-methoxyphenyl)-1H-pyrrol-2-yl]-N,N-diethyl-2-oxoacetamide866042-98-0C18H19N3O3
- 1-(4-Ethoxyphenyl)-5-oxo-N-pyridin-3-ylpyrrolidine-3-carboxamide796081-93-1C18H19N3O3
- 2-Cyano-N-cyclohexyl-5-(2-nitrophenyl)penta-2,4-dienamide737819-53-3C18H19N3O3
- Ethyl (2,5-dimethyl-7-oxo-3-phenyl-4,7-dihydropyrazolo[1,5-a]pyrimidin-6-yl)acetate462618-28-6C18H19N3O3
- [4-(1,3-Benzodioxol-5-ylmethyl)piperazin-1-yl]-pyridin-4-ylmethanone78031-41-1C18H19N3O3
- 3,4-Dimethoxy-N-({8-methylimidazo[1,2-a]pyridin-2-yl}methyl)benzamide868971-08-8C18H19N3O3
- 4-(4-Methoxyphenyl)-5-methyl-2-(2-phenoxyethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one861206-22-6C18H19N3O3
- 4-(3-Methoxyphenyl)-5-methyl-2-(2-phenoxyethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one860786-47-6C18H19N3O3
- 5-Nitro-N-phenyl-2-piperidin-1-ylbenzamide785810-32-4C18H19N3O3
- N-({N'-[(1E)-(4-methylphenyl)methylidene]hydrazinecarbonyl}methyl)-2-phenoxyacetamide391893-68-8C18H19N3O3
- 1-(1-(4-Methoxyphenyl)-5-oxopyrrolidin-3-yl)-3-phenylurea877640-43-2C18H19N3O3
- Benzamide, N-[2-[4,5-dihydro-2-(2-hydroxyphenyl)-1H-imidazol-1-yl]ethyl]-2-hydroxy-132109-47-8C18H19N3O3
- N-[3-[2-(1H-Indol-3-yl)ethylamino]-3-oxopropyl]furan-2-carboxamide853712-16-0C18H19N3O3
- N-Benzyl-2-[3-cyano-4-(methoxymethyl)-6-methyl-2-oxopyridin-1-yl]acetamide862660-82-0C18H19N3O3
- 2-((4-Oxo-6-((4-phenylpiperazin-1-yl)methyl)-4H-pyran-3-yl)oxy)acetonitrile898418-36-5C18H19N3O3
- 2-(2-(4-Ethoxybenzylidene)hydrazino)-N-(4-methylphenyl)-2-oxoacetamide351443-69-1C18H19N3O3
- N-[2-(4-Acetamidoanilino)-2-oxoethyl]-3-methylbenzamide732263-77-3C18H19N3O3
- Propanoic acid, 2-methyl-, 2-oxo-2-[[4-(2-phenyldiazenyl)phenyl]amino]ethyl ester721896-76-0C18H19N3O3
- [(1-Cyanocyclopentyl)carbamoyl]methyl 1-methyl-1H-indole-3-carboxylate876411-89-1C18H19N3O3
- 3-(4-Methoxyphenyl)-2-[2-(4-methylphenyl)hydrazono]-3-oxopropanal O-methyloxime339012-90-7C18H19N3O3
- N-Acetyl amonafide69409-02-5C18H19N3O3
- [4-(3-Nitrobenzyl)piperazin-1-yl](phenyl)methanone5822-66-2C18H19N3O3
- [4-(4-Nitrobenzyl)piperazin-1-yl](phenyl)methanone354535-93-6C18H19N3O3
- 2-Nitro-N-(4-(piperidin-1-yl)phenyl)benzamide432009-48-8C18H19N3O3
- 2-(2-(2-Ethoxybenzylidene)hydrazino)-N-(4-methylphenyl)-2-oxoacetamide359809-90-8C18H19N3O3
- N-(4-Ethylphenyl)-2-(2-(2-methoxybenzylidene)hydrazino)-2-oxoacetamide767335-70-6C18H19N3O3
- 4-Methoxy-N-(2-(2-(4-methylbenzylidene)hydrazino)-2-oxoethyl)benzamide476430-76-9C18H19N3O3
- N-(2-(2-Benzylidenehydrazino)-2-oxoethyl)-4-ethoxybenzamide769146-93-2C18H19N3O3
- 2-(2-(2-Ethoxybenzylidene)hydrazino)-N-(2-methylphenyl)-2-oxoacetamide359730-39-5C18H19N3O3
- N-(2-(2-(4-Methoxybenzylidene)hydrazino)-2-oxoethyl)-4-methylbenzamide468073-22-5C18H19N3O3
- N-(2-(2-(3-Methoxybenzylidene)hydrazino)-2-oxoethyl)-4-methylbenzamide443967-22-4C18H19N3O3
- [4-(2-Nitrobenzyl)piperazin-1-yl](phenyl)methanone355393-03-2C18H19N3O3
- 2-Methyl-3-nitro-N-[4-(pyrrolidin-1-yl)phenyl]benzamide432017-80-6C18H19N3O3
- N-(4-Hydroxy-3-methyl-5-[1,3]oxazolo[4,5-b]pyridin-2-ylphenyl)-3-methylbutanamide896661-58-8C18H19N3O3
- N-[2-(1H-Benzimidazol-2-yl)ethyl]-3,4-dimethoxybenzamide303991-75-5C18H19N3O3
- (4-Methylphenyl)-[4-(2-nitrophenyl)piperazin-1-yl]methanone430456-31-8C18H19N3O3
- N-(4-Acetylphenyl)-2-(3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)acetamide933028-06-9C18H19N3O3
- N-[1-[2-(4-Methoxyphenoxy)ethyl]benzimidazol-2-yl]acetamide510713-07-2C18H19N3O3
- (3-Methyl-4-nitrophenyl)(4-phenylpiperazin-1-yl)methanone431906-97-7C18H19N3O3
- 1H-Indol-6-ol, 7-[(dimethylamino)methyl]-2-methyl-3-nitro-1-phenyl-441782-71-4C18H19N3O3
- 1-(4-Methoxybenzyl)-2,5,6-trimethyl-4-nitro-1H-1,3-benzimidazole338955-07-0C18H19N3O3
- N-(4-Hydroxy-3-methyl-5-[1,3]oxazolo[4,5-b]pyridin-2-ylphenyl)pentanamide892712-59-3C18H19N3O3
- 6H-Pyrido(2,3-b)(1,5)benzodiazepine-6-acetic acid, 1,5-dihydro-5-oxo-, 1,1-dimethylethyl ester133626-57-0C18H19N3O3
- N-[2-(4-Methoxyphenyl)ethyl]-3-oxo-1,2,3,4-tetrahydroquinoxaline-1-carboxamide1207005-44-4C18H19N3O3
- 2-Methoxy-4-(2-propen-1-yl)phenyl 4-((aminoiminomethyl)amino)benzoate89022-12-8C18H19N3O3
- (3-Methylphenyl)[4-(4-nitrophenyl)piperazin-1-yl]methanone326901-66-0C18H19N3O3
- 6-(1,3-Dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)hexanehydrazide446278-70-2C18H19N3O3
- N-(3-Acetylphenyl)-2-(3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)acetamide932972-43-5C18H19N3O3
- N-Cyclopropyl-N-((1-methyl-1H-pyrrol-2-yl)methyl)-2-(2-oxobenzo[d]oxazol-3(2H)-yl)acetamide1351640-95-3C18H19N3O3
- 3-(Aminomethyl)-7,9,12-trimethyl-2H-[1,4]oxazino[2,3,4-ij]pyrido[3,2-g]quinoline-5,11(3H,12H)-dione2131216-13-0C18H19N3O3
- 1-(2-Ethoxyphenyl)-5-oxo-N-(pyridin-2-yl)pyrrolidine-3-carboxamide873569-63-2C18H19N3O3
- N1-(3-acetamidophenyl)-N2-(2-methylbenzyl)oxalamide900000-63-7C18H19N3O3
- 1-(2,4-Dimethoxyphenyl)-3-(1-methyl-1H-indol-3-yl)urea899947-30-9C18H19N3O3
- 4-Benzyl-5-oxo-N-[(pyridin-2-yl)methyl]morpholine-3-carboxamide1351588-55-0C18H19N3O3
- 6,7,8-Trimethoxy-N-(phenylmethyl)-4-quinazolinamine150450-02-5C18H19N3O3
- 3-(2-(((2-Methoxyphenyl)methyl)amino)ethyl)-2,4(1H,3H)-quinazolinedione1028307-48-3C18H19N3O3
- Tubulin inhibitor 322923531-39-7C18H19N3O3
- 3-Benzyl-6-ethyl-5-methoxy-1-methylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione921467-50-7C18H19N3O3
- 4-Acetamido-N-(2-benzamidoethyl)benzamide1021107-78-7C18H19N3O3
- Methyl 1-((pyridin-4-ylmethyl)carbamoyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate1396565-09-5C18H19N3O3
- 1-[[4-(Oxidanylcarbamoyl)phenyl]methyl]-3,4-dihydro-2~{H}-quinoline-6-carboxamide2738688-82-7C18H19N3O3
- Methyl 1-((pyridin-2-ylmethyl)carbamoyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate1396568-17-4C18H19N3O3
- Imazaquin-methyl81335-43-5C18H19N3O3
- 1-(4-Ethoxyphenyl)-3-(pyridin-3-ylmethylamino)pyrrolidine-2,5-dione329743-47-7C18H19N3O3
- HbF inducer-12987004-95-3C18H19N3O3
- Imidafenacin metabolite M4503598-17-2C18H19N3O3
- Ethyl 5-(4-ethoxyphenyl)-7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate313249-36-4C18H19N3O3
- 4-(4-Benzylpiperazin-1-yl)-3-nitrobenzaldehyde301193-53-3C18H19N3O3
- Succinamic acid, N-(4'-o-tolyl-o-tolylazo)-63042-13-7C18H19N3O3
- 3-(2-Ethyl-5-methyl-7-oxo-3-phenyl-4,7-dihydropyrazolo[1,5-a]pyrimidin-6-yl)propanoic acid951626-65-6C18H19N3O3
- 6-Isopropyl-1-(4-methoxyphenyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid1018127-49-5C18H19N3O3
- 2-(Furan-2-yl)-3-(2-morpholin-4-ylethyl)quinazolin-4-one663215-69-8C18H19N3O3
- 5-(1-Adamantyl)-3-(3-nitrophenyl)-1,2,4-oxadiazole55241-31-1C18H19N3O3
Frequently asked questions
What is the molar mass of C18H19N3O3?
The molar mass of C18H19N3O3 is 325.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 19 hydrogen atoms, 3 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 331.1803 Da.
How many compounds have the formula C18H19N3O3?
CompoundList lists 401 compounds with the molecular formula C18H19N3O3, including N-(4-Ethoxyphenyl)-2-(3-oxo-1,2,3,4-tetrahydroquinoxalin-2-yl)acetamide, N-(2-Ethoxy-phenyl)-2-(3-oxo-1,2,3,4-tetrahydro-quinoxalin-2-yl)-acetamide, 1-(4-Methoxyphenyl)-N-(4-methyl-2-pyridinyl)-5-oxo-3-pyrrolidinecarboxamide. 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 C18H19N3O3?
C18H19N3O3 has a degree of unsaturation of 11. 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.