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 101 to 200 of 415 compounds
N-(tert-Butoxycarbonyl)-3-naphthalen-1-yl-D-alanine
CAS 76932-48-4C18H21NO4
Boc-3-(1-naphthyl)-L-alanine
CAS 55447-00-2C18H21NO4
3-((tert-Butoxycarbonyl)amino)-3-(naphthalen-1-yl)propanoic acid
CAS 268209-95-6C18H21NO4
N-(2-Hydroxy-3-phenylpropyl)-3,5-dimethoxybenzamide
CAS 1351591-76-8C18H21NO4
2-tert-Butoxycarbonylamino-3-naphthalen-2-YL-propionic acid
CAS 56583-58-5C18H21NO4
2-((tert-Butoxycarbonyl)amino)-3-(naphthalen-1-yl)propanoic acid
CAS 104882-22-6C18H21NO4
Colchinol
CAS 477-31-6C18H21NO4
4a-Hydroxy-9-methoxy-3-methyl-2,3,4,4a,5,6-hexahydro-1H-4,12-methano(1)benzofuro(3,2-e)isoquinolin-7(7aH)-one
CAS 850-50-0C18H21NO4
Boc-(R,S)-3-amino-3-(2-naphthyl)propionic acid
CAS 268542-15-0C18H21NO4
![N-[2-(4-Ethoxyphenoxy)ethyl]-4-methoxybenzamide chemical structure, C18H21NO4, CAS 1170934-01-6](/s/XZKWFCSRZZCHJE-UHFFFAOYSA-N.svg)
N-[2-(4-Ethoxyphenoxy)ethyl]-4-methoxybenzamide
CAS 1170934-01-6C18H21NO4
N-(4-Butylphenyl)-5-ethoxy-4-oxo-4H-pyran-2-carboxamide
CAS 1105230-78-1C18H21NO4
O-(4-Hydroxy-3-methylphenyl)-3,5-dimethyl-L-tyrosine
CAS 52050-08-5C18H21NO4
![(2alpha,3beta)-1,6-Didehydro-3-methoxy-15,16-[methylenebis(oxy)]erythrinan-2-ol chemical structure, C18H21NO4, CAS 5550-20-9](/s/ZIAIDGYDHGYWBH-OLMNPRSZSA-N.svg)
(2alpha,3beta)-1,6-Didehydro-3-methoxy-15,16-[methylenebis(oxy)]erythrinan-2-ol
CAS 5550-20-9C18H21NO4
(S)-3-((tert-Butoxycarbonyl)amino)-3-(naphthalen-2-yl)propanoic acid
CAS 500770-69-4C18H21NO4
(R)-3-((tert-Butoxycarbonyl)amino)-3-(naphthalen-2-yl)propanoic acid
CAS 500789-01-5C18H21NO4
N-(2-Hydroxy-2-phenylpropyl)-2-(2-methoxyphenoxy)acetamide
CAS 1351607-23-2C18H21NO4
![8-(2-Methylpropoxycarbonyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-carboxylic acid chemical structure, C18H21NO4, CAS 474263-68-8](/s/OGONIROXPIPVDK-UHFFFAOYSA-N.svg)
8-(2-Methylpropoxycarbonyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-carboxylic acid
CAS 474263-68-8C18H21NO4
![N,N-Dimethyl-2-[(4-methyl-6-oxo-7,8,9,10-tetrahydrobenzo[c]chromen-3-yl)oxy]acetamide chemical structure, C18H21NO4, CAS 307550-02-3](/s/XSMDRTSJKBOUBS-UHFFFAOYSA-N.svg)
N,N-Dimethyl-2-[(4-methyl-6-oxo-7,8,9,10-tetrahydrobenzo[c]chromen-3-yl)oxy]acetamide
CAS 307550-02-3C18H21NO4
Diethyl 1,5-dimethyl-3-phenyl-1H-pyrrole-2,4-dicarboxylate
CAS 161560-98-1C18H21NO4
Propyl 4-(2-furyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydro-3-quinolinecarboxylate
CAS 299452-14-5C18H21NO4
4-(6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)-2-methoxyphenol
CAS 374700-78-4C18H21NO4
Propan-2-yl 4-(furan-2-yl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate
CAS 299451-90-4C18H21NO4
![2-Methoxy-5-[(1Z)-2-(3,4,5-trimethoxyphenyl)ethenyl]-benzenamine chemical structure, C18H21NO4, CAS 213113-12-3](/s/QSAMWSFELUCKOA-AATRIKPKSA-N.svg)
2-Methoxy-5-[(1Z)-2-(3,4,5-trimethoxyphenyl)ethenyl]-benzenamine
CAS 213113-12-3C18H21NO4
Piperidine, 1-((2E,4Z)-5-(6-methoxy-1,3-benzodioxol-5-yl)-1-oxo-2,4-pentadienyl)-
CAS 69699-10-1C18H21NO4
- N-(4-Isopropoxyphenyl)-3,4-dimethoxybenzamide380567-12-4C18H21NO4
- 1-Adamantylmethyl 4-nitrobenzoate698985-02-3C18H21NO4
- N-[2-(3,4-Dimethoxyphenyl)ethyl]-2-methoxybenzamide142209-40-3C18H21NO4
- Diethyl 2,3,4,9-tetrahydro-1H-carbazole-1,8-dicarboxylate384800-62-8C18H21NO4
- 1,8-Diethyl-1,3,4,9-tetrahydro-4-oxo-pyrano[3,4-b]indole-1-acetic Acid Methyl Ester111478-84-3C18H21NO4
- (R,S)-Boc-3-amino-2-(naphthalen-1-yl)-propionic acid1310680-21-7C18H21NO4
- N-(2,5-Dimethoxyphenyl)-2-(2,3-dimethylphenoxy)acetamide303116-66-7C18H21NO4
- N-[2-(3,4-Dimethoxyphenyl)ethyl]-2-phenoxyacetamide3341-36-4C18H21NO4
- Propyl 2-cyclohexyl-1,3-dioxo-5-isoindolinecarboxylate352643-64-2C18H21NO4
- 2-[(4-Butan-2-ylphenyl)carbamoyl]-7-oxabicyclo[2.2.1]hept-5-ene-3-carboxylic acid1005132-94-4C18H21NO4
- 6-[3-(Dimethylamino)prop-2-enoyl]-7-hydroxy-8-methyl-4-propyl-2H-chromen-2-one1821457-37-7C18H21NO4
- (E)-Methyl 2,2-dimethyl-4,6-dioxo-5-((p-tolylamino)methylene)cyclohexanecarboxylate331965-05-0C18H21NO4
- Benzeneacetamide,N-[2-(3,4-dimethoxyphenyl)ethyl]-4-hydroxy-10214-84-3C18H21NO4
- 3,5-Dimethoxy-N-(4-propan-2-yloxyphenyl)benzamide433964-22-8C18H21NO4
- 2-(4-Methoxyphenoxy)-N-[2-(4-methoxyphenyl)ethyl]acetamide303794-46-9C18H21NO4
- 3,4,5-Trimethoxy-N-[(4-methylphenyl)methyl]benzamide346704-40-3C18H21NO4
- 4-(1,4-Dioxa-8-azaspiro[4.5]decan-8-ylmethyl)-7-methylchromen-2-one859108-78-4C18H21NO4
- 4-(1,4-Dioxa-8-azaspiro[4.5]decan-8-ylmethyl)-6-methylchromen-2-one859112-47-3C18H21NO4
- 5-(6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)-2-methoxyphenol331852-84-7C18H21NO4
- 4-(3-Isopropyl-4-methoxy-phenoxy)-3,5-dimethyl-nitrobenzene156740-77-1C18H21NO4
- (R)-1-Phenylethanamine (S)-2-(6-hydroxy-2,3-dihydrobenzofuran-3-yl)acetate1394138-46-5C18H21NO4
- tert-Butyl 2',3-dioxo-2,3-dihydrospiro[indene-1,4'-piperidine]-1'-carboxylate1823835-30-8C18H21NO4
- N-Benzyl-3,4,5-trimethoxy-N-methylbenzamide349401-02-1C18H21NO4
- N-(2,5-Dimethoxyphenyl)-2-(2,6-dimethylphenoxy)acetamide5938-36-3C18H21NO4
- 3-(Azepane-1-carbonyl)-8-ethoxy-2H-chromen-2-one941233-24-5C18H21NO4
- 3-(5-(4-Methoxyphenyl)furan-2-yl)-1-morpholinopropan-1-one951498-98-9C18H21NO4
- 1,2-Benzenedicarboxylic acid, compd. with N,N-diethylbenzenamine (1:1)69847-39-8C18H21NO4
- N-(2,4-Dimethoxyphenyl)-2-(2-ethylphenoxy)acetamide449751-70-6C18H21NO4
- N-[(7-Methoxy-1,3-benzodioxol-5-yl)methyl]-2-(4-methoxyphenyl)ethanamine355816-26-1C18H21NO4
- Ethyl 4-[(3-ethoxy-2-hydroxybenzyl)amino]benzoate1223881-28-4C18H21NO4
- Ethyl 3-[(3-ethoxy-2-hydroxybenzyl)amino]benzoate1232787-67-5C18H21NO4
- Acetamide, 2-(p-ethoxyphenyl)-N-vanillyl-101651-31-4C18H21NO4
- 10-Hydroxy-codeine509-58-0C18H21NO4
- N-(4-Ethylphenyl)-3,4,5-trimethoxybenzamide198879-13-9C18H21NO4
- 2-(3,4-Dimethoxyphenyl)-N-(2-ethoxyphenyl)acetamide328286-85-7C18H21NO4
- N-(2,3-Dimethylphenyl)-3,4,5-trimethoxybenzamide300825-97-2C18H21NO4
- Formamide, N-(2-(3,4-dimethoxyphenyl)-1-(4-methoxyphenyl)ethyl)-87203-59-6C18H21NO4
- 2-(1,3-Benzodioxol-5-yl)-N-(3,4-dimethoxybenzyl)ethanamine418775-72-1C18H21NO4
- 2-[2-(3,4-Dimethoxyphenyl)ethyl]-4,5,6,7-tetrahydro-1H-isoindole-1,3(2H)-dione732260-67-2C18H21NO4
- 3-{[2-(2-Methoxyphenyl)ethyl]carbamoyl}bicyclo[2.2.1]hept-5-ene-2-carboxylic acid1005246-23-0C18H21NO4
- N-(2,5-Dimethoxyphenyl)-2-isopropoxybenzamide884439-71-8C18H21NO4
- N-[4-(1,3-Benzodioxol-5-ylmethoxy)benzyl]-N-(2-methoxyethyl)amine938007-94-4C18H21NO4
- N-(3-Isopropoxyphenyl)-2-(2-methoxyphenoxy)acetamide909520-68-9C18H21NO4
- N-{[4-(2-Methoxyphenyl)oxan-4-yl]methyl}furan-2-carboxamide1091128-81-2C18H21NO4
- Ecgonine (Z)-cinnamate74958-40-0C18H21NO4
- (S)-1-Phenylethanamine (R)-2-(6-hydroxy-2,3-dihydrobenzofuran-3-yl)acetate2673269-93-5C18H21NO4
- Ethyl 2-(Boc-amino)-1-naphthoate1824676-62-1C18H21NO4
- Propan-2-yl 6-(4-ethoxyphenyl)-4-methoxypyridine-2-carboxylate2598242-66-9C18H21NO4
- 4-{[(4-Ethoxy-3-methoxybenzyl)amino]methyl}benzoic acid775293-87-3C18H21NO4
- N-(2,4-Dimethylphenyl)-2,3,4-trimethoxybenzamide694445-41-5C18H21NO4
- N-(3,5-Dimethoxyphenyl)-2-(4-ethylphenoxy)acetamide432006-66-1C18H21NO4
- 2-(1,3-Benzodioxol-5-yl)-N-(2,3-dimethoxybenzyl)ethanamine264625-29-8C18H21NO4
- 4-{[(2-Ethoxy-3-methoxybenzyl)amino]methyl}benzoic acid775293-81-7C18H21NO4
- N-[1-(3,4-Dimethoxyphenyl)ethyl]-4-methoxybenzamide381702-54-1C18H21NO4
- N-(2,4-Dimethoxyphenyl)-2-phenoxybutanamide352682-55-4C18H21NO4
- Morphinan-3,6-diol, 7,8-didehydro-4,5-epoxy-2-(hydroxymethyl)-17-methyl-, (5alpha,6alpha)-198273-90-4C18H21NO4
- 2,4-Dimethoxy-N-[1-(4-methoxyphenyl)ethyl]benzamide894639-57-7C18H21NO4
- 1,1-Dimethylethyl 2-[4-(ethoxycarbonyl)phenyl]-1H-pyrrole-1-carboxylate879904-84-4C18H21NO4
- Acetamide,N-Pr,(6MeOnaph2yl)MeCOoxy162584-48-7C18H21NO4
- 3-[3-(Ethoxycarbonyl)-2-methyl-5-(4-methylphenyl)-1H-pyrrol-1-yl]propanoic acid396123-31-2C18H21NO4
- 2-{[4-(2,3-Dihydro-1,4-benzodioxin-6-ylmethoxy)benzyl]amino}ethanol938002-66-5C18H21NO4
- N-[(Furan-2-yl)methyl]-4-(2-methoxyphenyl)oxane-4-carboxamide1091090-15-1C18H21NO4
- Methyl 4-{[(3,4-dimethoxybenzyl)amino]methyl}benzoate1244855-41-1C18H21NO4
- (R)-4-Benzyl-3-((R)-6-oxaspiro[2.5]octane-1-carbonyl)oxazolidin-2-one909406-70-8C18H21NO4
- 17-DemethylsinomenineC18H21NO4
- Benzamide, N-allyl-N-(2,4-cyclopentadien-1-yl)-3,4,5-trimethoxy-73664-68-3C18H21NO4
- 1H-Pyrrole-3,4-dicarboxylic acid, 1-ethyl-2-methyl-5-(phenylmethyl)-, dimethyl ester121409-68-5C18H21NO4
- 3,4-Diethoxy-N-(2-methoxyphenyl)benzamide349446-56-6C18H21NO4
- N-(2,5-Dimethylphenyl)-3,4,5-trimethoxybenzamide300825-96-1C18H21NO4
- N-(3,5-Dimethoxyphenyl)-4-phenoxybutanamide708218-90-0C18H21NO4
- Phenol, 2-methoxy-6-(1,2,3,4-tetrahydro-6,7-dimethoxy-1-isoquinolinyl)-88307-75-9C18H21NO4
- N-(2,4-Dimethoxyphenyl)-2-(3-methylphenoxy)propanamide515177-91-0C18H21NO4
- N-(2,5-Dimethoxyphenyl)-2-(2-methylphenoxy)propanamide723259-48-1C18H21NO4
- N-(2-Methoxyethyl)-4-(2-phenoxyethoxy)benzamide881563-54-8C18H21NO4
- N-(2-Methoxyethyl)-2-(2-phenoxyethoxy)benzamide881579-56-2C18H21NO4
- N-(2-Methoxyethyl)-3-(2-phenoxyethoxy)benzamide881590-61-0C18H21NO4
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-(tert-Butoxycarbonyl)-3-naphthalen-1-yl-D-alanine, Boc-3-(1-naphthyl)-L-alanine, 3-((tert-Butoxycarbonyl)amino)-3-(naphthalen-1-yl)propanoic 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 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.