Molecular formula
C20H21NO3
368 compounds have this formula on CompoundList.
- Molar mass
- 323.39g/mol
- Monoisotopic mass
- 323.1521Da
- Atoms
- 45
- Elements
- 4
- Rings plus double bonds
- 11
The formula C20H21NO3 describes a molecule made of 20 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom 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 × 2074.28%12.011 × 20 = 240.220 g/mol
- H Hydrogen × 216.55%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 14.33%14.007 × 1 = 14.007 g/mol
- O Oxygen × 314.84%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C20H21NO3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 368 compounds
5Hpp-33
CAS 105624-86-0C20H21NO3
Dimefline
CAS 1165-48-6C20H21NO3
Koenidine
CAS 24123-92-0C20H21NO3
Mepixanox
CAS 17854-59-0C20H21NO3
![Benzo[1,3]dioxol-5-yl-(4-benzyl-piperidin-1-yl)-methanone chemical structure, C20H21NO3, CAS 260428-23-7](/s/NGALFKPFMUEMSJ-UHFFFAOYSA-N.svg)
Benzo[1,3]dioxol-5-yl-(4-benzyl-piperidin-1-yl)-methanone
CAS 260428-23-7C20H21NO3
3-(2,4-Dimethoxyanilino)-5-phenylcyclohex-2-en-1-one
CAS 312501-01-2C20H21NO3
N-(4-Ethoxyphenyl)-4-(3-hydroxy-3-methylbut-1-ynyl)benzamide
CAS 438477-26-0C20H21NO3
1-(4-Ethoxy-phenyl)-3-(1-phenyl-ethyl)-pyrrolidine-2,5-dione
CAS 5739-06-0C20H21NO3
![4-[3-(2-Methoxyphenyl)acryloyl]-1-methyl-5,6,7,8-tetrahydro-3(2H)-isoquinolinone chemical structure, C20H21NO3, CAS 5401-25-2](/s/MCVQZEIYWZQXKB-VAWYXSNFSA-N.svg)
4-[3-(2-Methoxyphenyl)acryloyl]-1-methyl-5,6,7,8-tetrahydro-3(2H)-isoquinolinone
CAS 5401-25-2C20H21NO3
9H-Fluoren-9-ylmethyl 4-hydroxypiperidine-1-carboxylate
CAS 351184-42-4C20H21NO3
Benzeneacetic acid, alpha-hydroxy-, (alphaR)-, compd. with (alphaR)-alpha-methyl-1-naphthalenemethanamine (1:1)
CAS 1073144-62-3C20H21NO3
![3-Hydroxy-4-methyl-2-piperidin-1-ylmethyl-benzo[c]chromen-6-one chemical structure, C20H21NO3, CAS 578737-27-6](/s/ZJXZRXHSMSOSNH-UHFFFAOYSA-N.svg)
3-Hydroxy-4-methyl-2-piperidin-1-ylmethyl-benzo[c]chromen-6-one
CAS 578737-27-6C20H21NO3
1-Piperidinecarboxylic acid, 3-hydroxy-, 9H-fluoren-9-ylmethyl ester, (3S)-
CAS 1373512-21-0C20H21NO3
3-(4-Isopropylphenyl)-3-(1-oxo-1,3-dihydro-2H-isoindol-2-yl)propanoic acid
CAS 478079-07-1C20H21NO3
1-((2-Methoxyphenyl)amino)-3-(naphthalen-1-yloxy)propan-2-ol
CAS 450363-95-8C20H21NO3
N-(4-Acetylphenyl)-4-phenyloxane-4-carboxamide
CAS 512795-86-7C20H21NO3
(Z)-Isopropyl 2-oxo-4-phenyl-4-(p-tolylamino)but-3-enoate
CAS 2649553-51-3C20H21NO3
2-(5-Acetyl-2-methoxyphenyl)-N-(2,3-dihydro-1H-inden-5-yl)acetamide
CAS 877950-98-6C20H21NO3
Galipine
CAS 525-68-8C20H21NO3
N-(3,4-Dihydro-1H-isochromen-1-ylmethyl)-4-prop-2-enoxybenzamide
CAS 331661-39-3C20H21NO3
8-((Diethylamino)methyl)-7-hydroxy-3-phenyl-4H-chromen-4-one
CAS 110442-19-8C20H21NO3
1-Butyl-3-hydroxy-3-phenacylindol-2-one
CAS 522604-90-6C20H21NO3
(2,6-Dimethylmorpholin-4-yl)(9H-xanthen-9-yl)methanone
CAS 312598-98-4C20H21NO3
8,9-Dimethoxy-10B-phenyl-1,5,6,10B-tetrahydropyrrolo(2,1-A)isoquinolin-3(2H)-one
CAS 17416-75-0C20H21NO3
- 7H-Pyrano(2,3-c)acridin-7-one, 1,2,3,12-tetrahydro-6-methoxy-3,3,12-trimethyl-13161-80-3C20H21NO3
- 3-Cyclohexyl-2-furan-3-yl-1-methyl-1H-indole-6-carboxylic acid494799-77-8C20H21NO3
- 1-[1-(3-Methoxyphenyl)-7-propoxyindolizin-3-yl]ethanone1693766-04-9C20H21NO3
- Clausamine D256222-00-1C20H21NO3
- 1-(2,3-Dihydro-1,4-benzodioxin-6-yl)-3-(3,4-dihydro-1H-isoquinolin-2-yl)propan-1-one426234-50-6C20H21NO3
- 8-Ethoxy-2-(4-methoxyphenyl)-1,3-dimethylcyclohepta[c]pyrrol-4(2H)-one329726-63-8C20H21NO3
- N-(2-Methylpropyl)-5-[(2-naphthalenyloxy)methyl]-2-furancarboxamide438465-55-5C20H21NO3
- N-Acetylnornuciferine1942-03-6C20H21NO3
- N-Desmethyl olopatadine113835-92-0C20H21NO3
- N-(4-Butylphenyl)-1-oxo-3,4-dihydro-1H-isochromene-3-carboxamide618392-74-8C20H21NO3
- 12E-Dechloroisorumbrin934303-15-8C20H21NO3
- 2-(4,6-Dimethyl-1-benzofuran-3-yl)-N-(4-methoxybenzyl)acetamide879928-32-2C20H21NO3
- Fla 11I611-58-5C20H21NO3
- 1H-Indole-3-acetic acid, 5-methoxy-2-methyl-1-(phenylmethyl)-, methyl ester57846-28-3C20H21NO3
- 7-[(Diethylamino)methyl]-6-hydroxy-2-(phenylmethylene)benzo[b]furan-3-one1613190-16-1C20H21NO3
- 2,2,4-Trimethyl-1,2-dihydroquinolin-6-yl 2-methoxybenzoate352658-34-5C20H21NO3
- N-(1-Naphthyl)-2-oxo-1-oxaspiro[4.5]decane-4-carboxamide31537-90-3C20H21NO3
- Uvariopsine30147-99-0C20H21NO3
- N-(3-Hydroxycyclohexyl)-9H-xanthene-9-carboxamide1396807-67-2C20H21NO3
- 3 suppliersFmoc-L-Prolinol148625-77-8C20H21NO3
- N-(5-tert-Butyl-2-methoxyphenyl)-1-benzofuran-2-carboxamide876538-56-6C20H21NO3
- N-(Cyclopropylmethyl)normorphinone91265-68-8C20H21NO3
- 1-{[1,1'-Biphenyl]-4-yl}-4-(morpholin-4-yl)butane-1,4-dione923820-69-3C20H21NO3
- Benzyl 2-benzyl-3-oxopiperidine-1-carboxylate276872-92-5C20H21NO3
- 3-(1,3-Benzodioxol-5-yl)-1-pentyl-1,3-dihydro-2H-indol-2-one912668-71-4C20H21NO3
- [1-(5-Hydroxypentyl)indol-3-yl]-(4-hydroxyphenyl)methanone1952336-77-4C20H21NO3
- Ethyl 4-oxo-2,6-diphenylpiperidine-3-carboxylate102012-64-6C20H21NO3
- Mukonicine88607-43-6C20H21NO3
- tert-Butyl 5-(benzyloxy)-1H-indole-1-carboxylate170147-29-2C20H21NO3
- Xanthene-9-carboxylic acid, 1-methyl-4-piperidinyl ester102585-05-7C20H21NO3
- (R)-(9H-Fluoren-9-yl)methyl 2-(hydroxymethyl)pyrrolidine-1-carboxylate215178-45-3C20H21NO3
- Cyclopentanecarboxylic acid, 2-[(4'-amino[1,1'-biphenyl]-4-yl)carbonyl]-, methyl ester, (1R,2R)-959123-13-8C20H21NO3
- Ethyl 1-benzyl-5-methoxy-2-methyl-1H-indole-3-carboxylate59513-85-8C20H21NO3
- Fmoc-Val-Wang resin156939-64-9C20H21NO3
- tert-Butyl 6-(benzyloxy)-1H-indole-1-carboxylate933474-39-6C20H21NO3
- 4-Benzyloxy-1-tert-butoxycarbonylindole903131-59-9C20H21NO3
- 3-Hydroxy-3-(2-mesityl-2-oxoethyl)-5-methyl-1,3-dihydro-2H-indol-2-one421584-39-6C20H21NO3
- (1-Benzyl-2-ethyl-1H-indol-4-yloxy)-acetic acid methyl ester172733-07-2C20H21NO3
- 2,2,4-Trimethyl-1,2-dihydroquinolin-6-yl phenoxyacetate331416-85-4C20H21NO3
- 1-{2-[4-(Propan-2-yloxy)phenoxy]ethyl}-1H-indole-3-carbaldehyde445407-37-4C20H21NO3
- 1-(Diphenylacetyl)piperidine-4-carboxylic acid147959-03-3C20H21NO3
- 1-Benzoyl-4-benzylpiperidine-4-carboxylic acid136080-23-4C20H21NO3
- 2,2,4-Trimethyl-1,2-dihydro-6-quinolinyl 3-methoxybenzoate300394-27-8C20H21NO3
- 1-(4-Ethoxyphenyl)-3-[(3-methylphenyl)methyl]pyrrolidine-2,5-dione312705-22-9C20H21NO3
- Ethyl 5-hydroxy-2-methyl-1-(2-phenylethyl)-1H-indole-3-carboxylate333352-68-4C20H21NO3
- 5-Ethyl-3-[2-(4-ethylphenyl)-2-oxoethyl]-3-hydroxy-1H-indol-2-one312280-46-9C20H21NO3
- 1-(2-(4-(tert-Butyl)phenoxy)ethyl)indoline-2,3-dione797780-70-2C20H21NO3
- Ethyl (4-methyl-4-phenyl-3,4-dihydroquinolin-1(2H)-yl)(oxo)acetate1306738-90-8C20H21NO3
- Ethyl 5-methoxy-2-methyl-1-(3-methylphenyl)indole-3-carboxylate300860-29-1C20H21NO3
- 1-[3-(2-Methoxyphenoxy)propyl]-2-methyl-1H-indole-3-carbaldehyde640254-42-8C20H21NO3
- Ethyl 1-(4-phenylbenzoyl)pyrrolidine-2-carboxylate1008688-56-9C20H21NO3
- Methyl 2-[(1-phenylcyclopentanecarbonyl)amino]benzoate1024400-44-9C20H21NO3
- 3-Hydroxy-4-[(2-methylpiperidyl)methyl]benzo[c]chromen-6-one329226-71-3C20H21NO3
- 7-(Diethylamino)-3-(4-methoxyphenyl)chromen-2-one720673-73-4C20H21NO3
- 2-(4-Ethoxyphenyl)-8-methoxy-1,3-dimethylcyclohepta[c]pyrrol-4(2H)-one461432-20-2C20H21NO3
- 1-[(4-Pentoxyphenyl)methyl]indole-2,3-dione708285-41-0C20H21NO3
- 2-(4-(Dimethylamino)-2,5-dimethoxybenzylidene)-1-indanone23114-26-3C20H21NO3
- Ethyl 3-(4-(((4-ethoxyphenyl)methylene)amino)phenyl)acrylate2863-94-7C20H21NO3
- 3-Hydroxy-7-methyl-1-[(4-methylphenyl)methyl]-3-(2-oxopropyl)-2,3-dihydro-1H-indol-2-one879045-82-6C20H21NO3
- 5'-Methyl-1'-[(4-methylphenyl)methyl]spiro[1,3-dioxane-2,3'-indole]-2'-one882382-71-0C20H21NO3
- 1-(Naphthalene-2-carbonyl)-octahydro-1H-indole-2-carboxylic acid1101179-68-3C20H21NO3
- (9H-Fluoren-9-yl)methyl 3-hydroxypiperidine-1-carboxylate1072502-05-6C20H21NO3
- 5-(4-Methoxyphenyl)-3-[(4-methoxyphenyl)amino]cyclohex-2-en-1-one333307-78-1C20H21NO3
- 3,4-Dimethylphenyl 1-(2-methylphenyl)-5-oxo-3-pyrrolidinecarboxylate709010-50-4C20H21NO3
- 8-Quinolyl 4,7,7-trimethyl-3-oxobicyclo[2.2.1]heptanecarboxylate622799-21-7C20H21NO3
- 4,7,7-Trimethyl-N-(naphthalen-1-yl)-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carboxamide1212488-72-6C20H21NO3
- 8-[(Diethylamino)methyl]-7-hydroxy-3-phenyl-2H-chromen-2-one853749-45-8C20H21NO3
- 3-Phenyl-N-[4-(tetrahydro-2-furanylmethoxy)phenyl]acrylamide881754-12-7C20H21NO3
- Indobufen impurity 536691-02-8C20H21NO3
- 4'-Azetidinomethyl-2-carboethoxybenzophenone898756-25-7C20H21NO3
- 4-Azetidinomethyl-4'-carboethoxybenzophenone898756-31-5C20H21NO3
- 3-Azetidinomethyl-3'-carboethoxybenzophenone898771-48-7C20H21NO3
- (2Z)-2-{[4-(Dimethylamino)phenyl]methylidene}-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one1025637-00-6C20H21NO3
- 9H-Fluoren-9-ylmethyl 3-(hydroxymethyl)pyrrolidine-1-carboxylate1343980-40-4C20H21NO3
- {4-[4-(Piperidinocarbonyl)phenyl]phenyl}acetic acid1375069-29-6C20H21NO3
- 1-[1-(4-Ethoxyphenyl)-5-methoxy-2-methylindol-3-yl]ethanone332017-52-4C20H21NO3
Frequently asked questions
What is the molar mass of C20H21NO3?
The molar mass of C20H21NO3 is 323.39 g/mol, calculated from standard atomic weights for 20 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 3 oxygen atoms. The monoisotopic mass is 323.1521 Da.
How many compounds have the formula C20H21NO3?
CompoundList lists 368 compounds with the molecular formula C20H21NO3, including 5Hpp-33, Dimefline, Koenidine. 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 C20H21NO3?
C20H21NO3 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.