Molecular formula
C18H21NO4
415 compounds have this formula on CompoundList.
- Molar mass
- 315.37g/mol
- Monoisotopic mass
- 321.1847Da
- Atoms
- 44
- Elements
- 4
- Rings plus double bonds
- 9
The formula C18H21NO4 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom 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 × 1868.55%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.71%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 14.44%14.007 × 1 = 14.007 g/mol
- O Oxygen × 420.29%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C18H21NO4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 201 to 300 of 415 compounds
N-(2-Ethoxyphenyl)-2-(2-methoxyethoxy)benzamide
CAS 882098-41-1C18H21NO4
N-(2-Ethoxyphenyl)-4-(2-methoxyethoxy)benzamide
CAS 882088-16-6C18H21NO4
![9-(3-Hydroxypropyl)-6-methyl-2,3,9,10-tetrahydro-1H-cyclopenta[3,4]chromeno[6,7-e][1,3]oxazin-4(8H)-one chemical structure, C18H21NO4, CAS 919744-05-1](/s/NDNQOYROYANTLF-UHFFFAOYSA-N.svg)
9-(3-Hydroxypropyl)-6-methyl-2,3,9,10-tetrahydro-1H-cyclopenta[3,4]chromeno[6,7-e][1,3]oxazin-4(8H)-one
CAS 919744-05-1C18H21NO4
![3-{[(2-Ethoxy-3-methoxyphenyl)methyl]amino}-2-methylbenzoic acid chemical structure, C18H21NO4, CAS 886627-86-7](/s/MSPWKEVKXRBTNQ-UHFFFAOYSA-N.svg)
3-{[(2-Ethoxy-3-methoxyphenyl)methyl]amino}-2-methylbenzoic acid
CAS 886627-86-7C18H21NO4
4-(2-Ethoxyethoxy)-N-(2-methoxyphenyl)benzamide
CAS 902409-47-6C18H21NO4
2-(2-Ethoxyethoxy)-N-(2-methoxyphenyl)benzamide
CAS 903458-02-6C18H21NO4
![N-[4-(2-Ethoxyethoxy)phenyl]-4-methoxybenzamide chemical structure, C18H21NO4, CAS 914452-84-9](/s/NKPLUKIHEOUNPQ-UHFFFAOYSA-N.svg)
N-[4-(2-Ethoxyethoxy)phenyl]-4-methoxybenzamide
CAS 914452-84-9C18H21NO4
![N-[4-(2-Ethoxyethoxy)phenyl]-2-methoxybenzamide chemical structure, C18H21NO4, CAS 920122-53-8](/s/XRYCTAAVXYPSIL-UHFFFAOYSA-N.svg)
N-[4-(2-Ethoxyethoxy)phenyl]-2-methoxybenzamide
CAS 920122-53-8C18H21NO4
![N-[2-(2-Ethoxyethoxy)phenyl]-2-methoxybenzamide chemical structure, C18H21NO4, CAS 909363-30-0](/s/HRBFNWDCPFDJPY-UHFFFAOYSA-N.svg)
N-[2-(2-Ethoxyethoxy)phenyl]-2-methoxybenzamide
CAS 909363-30-0C18H21NO4
(S)-N-Boc-1-Naphthylalanine
CAS 2209833-45-2C18H21NO4
![N-[2-(Formyloxy)-3-(1-naphthalenyloxy)propyl]-N-(1-methylethyl)formamide chemical structure, C18H21NO4, CAS 149874-33-9](/s/FYMUEMPBEJMIRW-UHFFFAOYSA-N.svg)
N-[2-(Formyloxy)-3-(1-naphthalenyloxy)propyl]-N-(1-methylethyl)formamide
CAS 149874-33-9C18H21NO4
N-((4-Hydroxytetrahydro-2H-pyran-4-yl)methyl)-2-(naphthalen-2-yloxy)acetamide
CAS 1351641-87-6C18H21NO4
4-(1-tert-Butoxycarbonylamino-ethyl)-naphthalene-1-carboxylic acid
CAS 863769-56-6C18H21NO4
(3-Benzyloxy-4-methoxy-phenylamino)-acetic Acid Ethyl Ester
CAS 561277-12-1C18H21NO4
![(4R)-3-[(2R,3S)-3-Hydroxy-1-oxo-2-(2-propen-1-yl)-4-penten-1-yl]-4-(phenylmethyl)-2-oxazolidinone chemical structure, C18H21NO4, CAS 1005006-69-8](/s/RGXROBWGGVLRHX-OAGGEKHMSA-N.svg)
(4R)-3-[(2R,3S)-3-Hydroxy-1-oxo-2-(2-propen-1-yl)-4-penten-1-yl]-4-(phenylmethyl)-2-oxazolidinone
CAS 1005006-69-8C18H21NO4
![2-(2H-1,3-Benzodioxol-5-yloxy)-1-{3-methylidene-8-azabicyclo[3.2.1]octan-8-yl}propan-1-one chemical structure, C18H21NO4, CAS 2320957-76-2](/s/CRIIEZGYISOGQZ-UHFFFAOYSA-N.svg)
2-(2H-1,3-Benzodioxol-5-yloxy)-1-{3-methylidene-8-azabicyclo[3.2.1]octan-8-yl}propan-1-one
CAS 2320957-76-2C18H21NO4
![2-{(E)-[(2,5-Diethoxyphenyl)imino]methyl}-6-methoxyphenol chemical structure, C18H21NO4, CAS 1232819-27-0](/s/DZVCGOBMBBWHJT-UHFFFAOYSA-N.svg)
2-{(E)-[(2,5-Diethoxyphenyl)imino]methyl}-6-methoxyphenol
CAS 1232819-27-0C18H21NO4
2H-Furo(2,3-h)-1-benzopyran-2-one, 4,8-dimethyl-7-((2-(dimethylamino)ethoxy)methyl)-
CAS 78560-66-4C18H21NO4
4,7-Methano-3aH-indene-3a-carboxylic acid, octahydro-, (4-nitrophenyl)methyl ester, (3aalpha,4alpha,7alpha,7aalpha)-
CAS 93107-53-0C18H21NO4
Diethyl 2-(2-quinolin-2-ylethyl)propanedioate
CAS 47304-84-7C18H21NO4
4-(6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinolin-4-yl)-2-methoxyphenol
CAS 23263-77-6C18H21NO4
(4a-Methyl-3,4,5,6,7,8-hexahydro-2H-naphthalen-2-yl) 4-nitrobenzoate
CAS 93950-90-4C18H21NO4
3-(2,3-Dimethoxyphenyl)propyl N-phenylcarbamate
CAS 7461-68-9C18H21NO4
N-(2,5-Dimethoxyphenyl)-4-propan-2-yloxybenzamide
CAS 722461-02-1C18H21NO4
- N-(2,5-Dimethoxyphenyl)-2-(2,4-dimethylphenoxy)acetamide351223-02-4C18H21NO4
- N-(2,5-Dimethoxyphenyl)-3-(4-methoxyphenyl)propanamide545366-32-3C18H21NO4
- N-(2-Ethoxyphenyl)-2-(2-methoxy-4-methylphenoxy)acetamide875522-86-4C18H21NO4
- 2-(3,4-Dimethoxyphenyl)-N-(2-methoxy-5-methylphenyl)acetamide349122-31-2C18H21NO4
- N-(3,4-Dimethoxyphenyl)-2-phenoxybutanamide694441-77-5C18H21NO4
- 3,4-Dimethyl-N-(3,4,5-trimethoxyphenyl)benzamide838903-56-3C18H21NO4
- N-(2,5-Dimethoxyphenyl)-2-phenoxybutanamide545364-30-5C18H21NO4
- 4-({[2-(3,4-Dimethoxyphenyl)ethyl]amino}methyl)benzoic acid656814-60-7C18H21NO4
- Methyl 1-[(6-methyl-1-benzofuran-3-yl)acetyl]piperidine-4-carboxylate882585-35-5C18H21NO4
- N-[(3,4-Dimethoxyphenyl)methyl]-2-(2-methoxyphenyl)acetamide898158-22-0C18H21NO4
- Benzyl N-[1-(benzyloxy)-3-hydroxypropan-2-yl]carbamate172745-74-3C18H21NO4
- N-[4-(2-Ethoxyethoxy)phenyl]-2-phenoxyacetamide914453-62-6C18H21NO4
- N-[2-(2-Ethoxyethoxy)phenyl]-2-phenoxyacetamide909354-58-1C18H21NO4
- N-[3-(2-Methoxyethoxy)phenyl]-2-(4-methoxyphenyl)acetamide925161-34-8C18H21NO4
- N-(4-Methoxybenzyl)-4-(2-methoxyethoxy)benzamide941428-10-0C18H21NO4
- 2-(1-Naphthylmethyl)piperidine oxalate1177281-94-5C18H21NO4
- N-(4-Ethoxybenzyl)-2,6-dimethoxybenzamide932189-73-6C18H21NO4
- Benzoic acid, 2-[[3-(4-methoxyphenoxy)propyl]amino]-3-methyl-937693-14-6C18H21NO4
- 4-(3-BOC-Aminophenyl)-2-methoxyphenol1261979-36-5C18H21NO4
- 5-(3-BOC-Aminophenyl)-2-methoxyphenol1261904-30-6C18H21NO4
- 4-(4-BOC-Aminophenyl)-2-methoxyphenol1261941-66-5C18H21NO4
- 5-(4-BOC-Aminophenyl)-2-methoxyphenol1262002-31-2C18H21NO4
- 10alpha-Hydroxycodeine16589-96-1C18H21NO4
- 1-[(2-Benzofuranylcarbonyl)amino]cyclohexanecarboxylic acid ethyl ester944280-35-7C18H21NO4
- 3-Isopropoxy-5-(3-pyridin-3-ylpropoxy)benzoic acid927908-21-2C18H21NO4
- Ethyl 1-(3-ethoxy-3-oxopropyl)-4-phenylpyrrole-2-carboxylate1192718-62-9C18H21NO4
- Methyl 4-{5-[1-(morpholin-4-yl)ethyl]furan-2-yl}benzoate860344-06-5C18H21NO4
- 2,3-Dihydroxypropyl 2-(2,3-dimethylanilino)benzoate10457-97-3C18H21NO4
- N-[2-Cyclopropyl-2-(furan-2-yl)-2-hydroxyethyl]-4-ethoxybenzamide1396806-87-3C18H21NO4
- N-(Furan-2-ylmethyl)-3-methoxy-N-(tetrahydro-2H-pyran-4-yl)benzamide1448050-61-0C18H21NO4
- (E)-3-(Furan-3-yl)-N-(2-hydroxy-3-(4-methoxyphenyl)-2-methylpropyl)acrylamide1799255-03-0C18H21NO4
- 2-(Benzo[d][1,3]dioxol-5-yloxy)-1-(4-cyclopropylidenepiperidin-1-yl)propan-1-one2097866-98-1C18H21NO4
- N-[(4-Hydroxy-4,5,6,7-tetrahydro-1-benzofuran-4-yl)methyl]-2-(2-methylphenoxy)acetamide2320216-74-6C18H21NO4
- 4-Ethoxy-N-((4-hydroxy-4,5,6,7-tetrahydrobenzofuran-4-yl)methyl)benzamide2320572-25-4C18H21NO4
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl (1r,4r)-4-(propan-2-yl)cyclohexane-1-carboxylate508170-82-9C18H21NO4
- Benzene, 1,1'-(2-nitrobutylidene)bis(4-methoxy-85078-20-2C18H21NO4
- Dimethyl 1,3,6,8-tetramethyl-11-azatricyclo[6.2.1.02,7]undeca-2,4,6,9-tetraene-9,10-dicarboxylate27663-97-4C18H21NO4
- N-(3,5-Dimethylphenyl)-2,4,5-trimethoxybenzamide695170-19-5C18H21NO4
- N-(4-Ethylphenyl)-2,4,5-trimethoxybenzamide700860-89-5C18H21NO4
- N-[2-(2-Methoxyphenoxy)ethyl]-2-(2-methylphenoxy)acetamide851451-36-0C18H21NO4
- N-(2,5-Dimethoxyphenyl)-2-(4-methylphenoxy)propanamide723258-43-3C18H21NO4
- N-(4-Methoxybenzyl)-2-(2-methoxyphenoxy)-N-methylacetamide915877-81-5C18H21NO4
- 2,6-Dimethoxy-N-[(4-methoxyphenyl)methyl]-N-methylbenzamide915906-05-7C18H21NO4
- 2-(3-Methylphenyl)-N-(3,4,5-trimethoxyphenyl)acetamide898159-57-4C18H21NO4
- N-[2-(4-Methoxyphenoxy)ethyl]-2-(3-methylphenoxy)acetamide1090717-32-0C18H21NO4
- 3-Hydroxy-4-methoxy-N-[2-(3-methoxyphenyl)ethyl]benzeneacetamide74007-21-9C18H21NO4
- (S)-tert-Butyl 2,6-dihydroxy-2,3-dihydrobenzo[f]quinoline-4(1H)-carboxylate191732-54-4C18H21NO4
- 3-[[(4-Ethoxy-3-methoxyphenyl)methyl]amino]-4-methylbenzoic acid886628-79-1C18H21NO4
- tert-Butyl 2-[4-(benzyloxy)-2-oxo-1,2-dihydropyridin-1-yl]acetate219954-11-7C18H21NO4
- 4-{[4,5-Di(propan-2-yl)furan-2-carbonyl]amino}benzoic acid1116091-18-9C18H21NO4
- N-[2-(4-Methoxyphenoxy)ethyl]-2-(2-methylphenoxy)acetamide1090664-05-3C18H21NO4
- Ethyl 2-cyano-3-[3-(cyclopentyloxy)-4-methoxyphenyl]-2-propenoate75614-13-0C18H21NO4
- N-(2-Hydroxy-2-phenylpropyl)-3,5-dimethoxybenzamide1351641-49-0C18H21NO4
- 4-tert-Butyl 1-methyl 2-(quinolin-3-yl)butanedioate847458-94-0C18H21NO4
- 6-(4-(tert-Butoxy)phenyl)-5-ethyl-2-oxo-1,2-dihydropyridine-3-carboxylic acid1426668-81-6C18H21NO4
- N-(2-Cyclopropyl-2-(furan-2-yl)-2-hydroxyethyl)-2-(o-tolyloxy)acetamide1396783-24-6C18H21NO4
- N-(3-Hydroxy-3-phenylpropyl)-3,5-dimethoxybenzamide1396747-08-2C18H21NO4
- Methyl 5-(benzyloxy)-3-methyl-2-(propan-2-yloxy)pyridine-4-carboxylate1616290-62-0C18H21NO4
- 2-(2-Ethoxy-6-hydroxymethyl-phenoxy)-N-p-tolyl-acetamide1427028-40-7C18H21NO4
- 2-[1-(4-Hydroxyphenyl)propan-2-yl]-3,4-dihydro-1H-isoquinoline-4,6,8-triol161040-25-1C18H21NO4
- N-[2-Hydroxy-2-(oxan-4-yl)-2-phenylethyl]furan-2-carboxamide2034238-59-8C18H21NO4
- N-[2-Hydroxy-2-(oxan-4-yl)-2-phenylethyl]furan-3-carboxamide2034402-90-7C18H21NO4
- (E)-5-[3-[[(1,1-Dimethylethoxy)carbonyl]amino]phenyl]-2-penten-4-ynoic Acid Methyl Ester1346606-47-0C18H21NO4
- N-{2-[4-(Furan-2-yl)phenyl]-2-hydroxyethyl}oxane-4-carboxamide2097872-69-8C18H21NO4
- 2-{[(Benzyloxy)carbonyl]amino}-2-{3-cyclopropylbicyclo[1.1.1]pentan-1-yl}acetic acid2287259-74-7C18H21NO4
- Methyl (E)-4-[(2S,3aS,7aS)-2-phenyl-3,3a,5,6,7,7a-hexahydro-2H-furo[3,2-b]pyridin-4-yl]-4-oxobut-2-enoate2411177-34-7C18H21NO4
- Methyl (2E)-3-({1,3-dihydrospiro[indene-2,4'-oxan]-3-yl}carbamoyl)prop-2-enoate2411333-17-8C18H21NO4
- N-[(7-Cyclopropyl-1,3-benzodioxol-5-yl)methyl]-N-(oxolan-3-yl)prop-2-enamide2411300-60-0C18H21NO4
- (17xi)-(+)-hydrocodone N-oxide1240379-87-6C18H21NO4
- Benzene, 1,1'-(2-nitroethylidene)bis(4-ethoxy-77669-63-7C18H21NO4
- Benzene, 1,1'-(2-methyl-2-nitropropylidene)bis(4-methoxy-85078-24-6C18H21NO4
- 5-[[(4-Methoxy-1-naphthalenyl)oxy]methyl]-3-(1-methylethyl)-2-oxazolidinone160235-48-3C18H21NO4
- 2-Oxazolidinone, 5-[[(4-methoxy-1-naphthalenyl)oxy]methyl]-3-(1-methylethyl)-, (R)-160334-47-4C18H21NO4
- Propan-2-yl 4-(furan-2-yl)-2-methyl-5-oxo-4,4a,6,7-tetrahydro-1H-quinoline-3-carboxylate6712-84-1C18H21NO4
- Benzoic acid, 4-(1,3-dioxo-2-azaspiro[4.5]dec-2-yl)-, ethyl ester61588-92-9C18H21NO4
- 2-{[2-(3,4-Dimethoxyphenyl)ethyl]amino}-1-(4-hydroxyphenyl)ethan-1-one63846-50-4C18H21NO4
Frequently asked questions
What is the molar mass of C18H21NO4?
The molar mass of C18H21NO4 is 315.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 4 oxygen atoms. The monoisotopic mass is 321.1847 Da.
How many compounds have the formula C18H21NO4?
CompoundList lists 415 compounds with the molecular formula C18H21NO4, including N-(2-Ethoxyphenyl)-2-(2-methoxyethoxy)benzamide, N-(2-Ethoxyphenyl)-4-(2-methoxyethoxy)benzamide, 9-(3-Hydroxypropyl)-6-methyl-2,3,9,10-tetrahydro-1H-cyclopenta[3,4]chromeno[6,7-e][1,3]oxazin-4(8H)-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 C18H21NO4?
C18H21NO4 has a degree of unsaturation of 9. 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.