Molecular formula
C20H21FN2O2
104 compounds have this formula on CompoundList.
- Molar mass
- 340.40g/mol
- Monoisotopic mass
- 346.1964Da
- Atoms
- 46
- Elements
- 5
- Rings plus double bonds
- 11
The formula C20H21FN2O2 describes a molecule made of 20 carbon atoms, 21 hydrogen atoms, 1 fluorine atom, 2 nitrogen atoms and 2 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 × 2070.57%12.011 × 20 = 240.220 g/mol
- H Hydrogen × 216.22%1.008 × 21 = 21.168 g/mol
- F Fluorine × 15.58%18.998 × 1 = 18.998 g/mol
- N Nitrogen × 28.23%14.007 × 2 = 28.014 g/mol
- O Oxygen × 29.40%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C20H21FN2O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 104 compounds
Citalopram N-oxide
CAS 63284-72-0C20H21FN2O2
![1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-3-hydroxy-5-isobenzofurancarbonitrile chemical structure, C20H21FN2O2, CAS 411221-53-9](/s/LJPQJFHBFOOIHE-UHFFFAOYSA-N.svg)
1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-3-hydroxy-5-isobenzofurancarbonitrile
CAS 411221-53-9C20H21FN2O2
![1-[(4-Fluorophenyl)methyl]-N-[(4-methylphenyl)methyl]-5-oxopyrrolidine-2-carboxamide chemical structure, C20H21FN2O2, CAS 1041639-68-2](/s/RFVKYDVZUFFTPZ-UHFFFAOYSA-N.svg)
1-[(4-Fluorophenyl)methyl]-N-[(4-methylphenyl)methyl]-5-oxopyrrolidine-2-carboxamide
CAS 1041639-68-2C20H21FN2O2
![Methyl N-[4-[(4-fluorophenyl)methyl-prop-2-ynyl-amino]-2,6-dimethyl-phenyl]carbamate chemical structure, C20H21FN2O2, CAS 1821222-10-9](/s/HXUBJZRAVCPBRH-UHFFFAOYSA-N.svg)
Methyl N-[4-[(4-fluorophenyl)methyl-prop-2-ynyl-amino]-2,6-dimethyl-phenyl]carbamate
CAS 1821222-10-9C20H21FN2O2
![N-Cyclohexyl-2-[(4-fluorobenzoyl)amino]benzamide chemical structure, C20H21FN2O2, CAS 592471-43-7](/s/UAZQNSLPYNHMHZ-UHFFFAOYSA-N.svg)
N-Cyclohexyl-2-[(4-fluorobenzoyl)amino]benzamide
CAS 592471-43-7C20H21FN2O2
N-(2-Ethyl-6-methylphenyl)-1-(4-fluorophenyl)-5-oxopyrrolidine-3-carboxamide
CAS 351066-96-1C20H21FN2O2
1-(4-Fluorobenzoyl)-N-(3-methylphenyl)piperidine-4-carboxamide
CAS 591226-88-9C20H21FN2O2
N-(2-Fluorophenyl)-5-oxo-1-(4-propan-2-ylphenyl)pyrrolidine-3-carboxamide
CAS 592477-46-8C20H21FN2O2
N-(2-Fluorophenyl)-1-(4-methylbenzoyl)piperidine-4-carboxamide
CAS 510722-51-7C20H21FN2O2
1-(2-Fluorophenyl)-5-oxo-N-(2,4,6-trimethylphenyl)pyrrolidine-3-carboxamide
CAS 669696-21-3C20H21FN2O2
![4-Fluoro-N-[2-(3-methylpiperidine-1-carbonyl)phenyl]benzamide chemical structure, C20H21FN2O2, CAS 433327-60-7](/s/WIUSYAYXJVNHHI-UHFFFAOYSA-N.svg)
4-Fluoro-N-[2-(3-methylpiperidine-1-carbonyl)phenyl]benzamide
CAS 433327-60-7C20H21FN2O2
![(2E)-3-(3-Fluorophenyl)-1-[4-(2-methoxyphenyl)piperazin-1-yl]prop-2-en-1-one chemical structure, C20H21FN2O2, CAS 609792-94-1](/s/ISSXBDYADXMRBZ-MDZDMXLPSA-N.svg)
(2E)-3-(3-Fluorophenyl)-1-[4-(2-methoxyphenyl)piperazin-1-yl]prop-2-en-1-one
CAS 609792-94-1C20H21FN2O2
![2-(4-Fluorophenyl)-N-[4-methyl-3-(2-oxopiperidin-1-yl)phenyl]acetamide chemical structure, C20H21FN2O2, CAS 922866-61-3](/s/AKTMSIVQRRRWCY-UHFFFAOYSA-N.svg)
2-(4-Fluorophenyl)-N-[4-methyl-3-(2-oxopiperidin-1-yl)phenyl]acetamide
CAS 922866-61-3C20H21FN2O2
2-Fluoro-N-(2-isobutyryl-1,2,3,4-tetrahydroisoquinolin-7-yl)benzamide
CAS 955663-75-9C20H21FN2O2
3-Fluoro-N-(2-isobutyryl-1,2,3,4-tetrahydroisoquinolin-7-yl)benzamide
CAS 955663-83-9C20H21FN2O2
2-(1-(4-Fluorobenzyl)-1H-indol-3-yl)-N-(2-methoxyethyl)acetamide
CAS 922092-02-2C20H21FN2O2
![N-[3-(3-Fluorophenyl)-2-(2-oxopyrrolidin-1-yl)propyl]benzamide chemical structure, C20H21FN2O2, CAS 1421494-56-5](/s/INORDEWIIQOXKM-UHFFFAOYSA-N.svg)
N-[3-(3-Fluorophenyl)-2-(2-oxopyrrolidin-1-yl)propyl]benzamide
CAS 1421494-56-5C20H21FN2O2
![Benzyl 5-fluorospiro[indoline-3,4'-piperidine]-1'-carboxylate chemical structure, C20H21FN2O2, CAS 209348-85-6](/s/WDSMLORPPZVYNH-UHFFFAOYSA-N.svg)
Benzyl 5-fluorospiro[indoline-3,4'-piperidine]-1'-carboxylate
CAS 209348-85-6C20H21FN2O2
(S)-Citalopram N-oxide
CAS 917482-45-2C20H21FN2O2
1-(2-(4-(Dimethylamino)phenyl)quinolin-6-yloxy)-3-fluoropropan-2-ol
CAS 1374107-46-6C20H21FN2O2
4Qln263mts
CAS 1374108-16-3C20H21FN2O2
![4-Fluoro-N-[2-(4-methylpiperidine-1-carbonyl)phenyl]benzamide chemical structure, C20H21FN2O2, CAS 733797-98-3](/s/ABSVTROODILFLZ-UHFFFAOYSA-N.svg)
4-Fluoro-N-[2-(4-methylpiperidine-1-carbonyl)phenyl]benzamide
CAS 733797-98-3C20H21FN2O2
Butanamide, N-cyclopropyl-4-(((5-fluoro-2-hydroxyphenyl)phenylmethylene)amino)-
CAS 62666-22-2C20H21FN2O2
2-Cyclohexaneamido-N-(4-fluorophenyl)benzamide
CAS 1030813-71-8C20H21FN2O2
- N1-((1-(4-fluorophenyl)cyclopropyl)methyl)-N2-(1-phenylethyl)oxalamide1049438-13-2C20H21FN2O2
- 3-Fluoro-N-(1-isobutyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)benzamide941953-96-4C20H21FN2O2
- (S)-Citalopram-d6 N-oxide1217710-65-0C20H21FN2O2
- N-(4-(Benzyl(methyl)amino)but-2-yn-1-yl)-2-(4-fluorophenoxy)acetamide1396784-61-4C20H21FN2O2
- N-(4-(2-(Cyclopropylamino)-2-oxoethyl)phenyl)-3-(2-fluorophenyl)propanamide1448059-63-9C20H21FN2O2
- 1-(4-Fluorobenzoyl)-N-(4-methylphenyl)piperidine-4-carboxamide591239-55-3C20H21FN2O2
- 2-Fluoro-N-[2-(4-methylpiperidine-1-carbonyl)phenyl]benzamide880571-41-5C20H21FN2O2
- 3-Fluoro-N-(1-isobutyryl-1,2,3,4-tetrahydroquinolin-6-yl)benzamide941915-65-7C20H21FN2O2
- 4-Fluoro-N-(1-isobutyryl-1,2,3,4-tetrahydroquinolin-6-yl)benzamide941960-67-4C20H21FN2O2
- N-Benzyl-1-[2-(4-fluorophenyl)ethyl]-5-oxopyrrolidine-3-carboxamide896923-19-6C20H21FN2O2
- 1-[2-(4-Fluorophenyl)ethyl]-N-(2-methylphenyl)-5-oxopyrrolidine-3-carboxamide897738-04-4C20H21FN2O2
- N-[4-(1-Azepanylcarbonyl)phenyl]-4-fluorobenzamide940493-25-4C20H21FN2O2
- N-[4-(1-Azepanylcarbonyl)phenyl]-2-fluorobenzamide940473-64-3C20H21FN2O2
- 2-(4-Fluorophenyl)-N-{4-[2-oxo-2-(pyrrolidin-1-yl)ethyl]phenyl}acetamide1060326-23-9C20H21FN2O2
- N-(4-(2-(Dimethylamino)-2-oxoethyl)phenyl)-1-(4-fluorophenyl)cyclopropanecarboxamide1091383-51-5C20H21FN2O2
- Citalopram nitrile oxide1346601-93-1C20H21FN2O2
- Benzyl 7-fluorospiro[indoline-3,4'-piperidine]-1'-carboxylate1243359-99-0C20H21FN2O2
- N-(2-Acetyl-1,2,3,4-tetrahydroisoquinolin-7-yl)-3-(2-fluorophenyl)propanamide1797212-77-1C20H21FN2O2
- N-((1-Benzoylpiperidin-4-yl)methyl)-4-fluorobenzamide1956324-58-5C20H21FN2O2
- 1-(4-Fluorophenyl)-4-[(2E)-3-(4-methoxyphenyl)prop-2-enoyl]piperazine432535-65-4C20H21FN2O2
- N-Cyclohexyl-2-[(2-fluorobenzoyl)amino]benzamide880570-29-6C20H21FN2O2
- 2-Fluoro-N-(1-isobutyryl-1,2,3,4-tetrahydroquinolin-7-yl)benzamide1005294-34-7C20H21FN2O2
- 3-Fluoro-N-(1-isobutyryl-1,2,3,4-tetrahydroquinolin-7-yl)benzamide1005294-36-9C20H21FN2O2
- 4-Fluoro-N-(1-isobutyryl-1,2,3,4-tetrahydroquinolin-7-yl)benzamide1005294-38-1C20H21FN2O2
- 2-Fluoro-N-(1-isobutyryl-1,2,3,4-tetrahydroquinolin-6-yl)benzamide942005-82-5C20H21FN2O2
- 2-(4-Fluorophenyl)-N-(1-propionyl-1,2,3,4-tetrahydroquinolin-6-yl)acetamide954023-74-6C20H21FN2O2
- N-{[1-(4-Fluorophenyl)-5-oxopyrrolidin-3-yl]methyl}-3,4-dimethylbenzamide954596-42-0C20H21FN2O2
- N-((1-(4-Fluorophenyl)-5-oxopyrrolidin-3-yl)methyl)-2-(m-tolyl)acetamide954597-29-6C20H21FN2O2
- N-((1-(4-Fluorobenzyl)-5-oxopyrrolidin-3-yl)methyl)-2-methylbenzamide955251-58-8C20H21FN2O2
- N-((1-(4-Fluorobenzyl)-5-oxopyrrolidin-3-yl)methyl)-2-phenylacetamide954712-45-9C20H21FN2O2
- 2-Fluoro-N-[1-(2-methylpropyl)-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl]benzamide941991-56-6C20H21FN2O2
- 4-Fluoro-N-(1-isobutyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)benzamide941953-93-1C20H21FN2O2
- 2-(4-Fluorophenyl)-N-(2-propionyl-1,2,3,4-tetrahydroisoquinolin-7-yl)acetamide955706-57-7C20H21FN2O2
- 2-Fluoro-N-{4-[(4-methylpiperidin-1-yl)carbonyl]phenyl}benzamide925638-80-8C20H21FN2O2
- 3-(2-Fluorophenyl)-N-(2-hydroxy-2-(1-methyl-1H-indol-3-yl)ethyl)propanamide2034539-88-1C20H21FN2O2
- 3-(2-Fluorophenyl)-N-[2-hydroxy-2-(1-methyl-1H-indol-5-yl)ethyl]propanamide2034256-12-5C20H21FN2O2
- 1-[(4-Fluorophenyl)methyl]-3-[3-(4-hydroxyphenyl)azetidin-1-yl]pyrrolidin-2-one1801348-10-6C20H21FN2O2
- 2-(4-Fluorophenyl)-1-((1R,5S)-3-(pyridin-3-yloxy)-8-azabicyclo[3.2.1]octan-8-yl)ethanone2109278-30-8C20H21FN2O2
- N-(2-Fluorophenyl)-1-(2-methylbenzoyl)piperidine-4-carboxamide860614-56-8C20H21FN2O2
- 2-Propen-1-one, 1-(4-fluorophenyl)-3-(4-(3-methoxyphenyl)-1-piperazinyl)-65201-16-3C20H21FN2O2
- 2-(4-Fluorophenyl)-N-[3-methyl-4-(2-oxopiperidin-1-yl)phenyl]acetamide941872-60-2C20H21FN2O2
- N-(1-Butyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)-4-fluorobenzamide941953-66-8C20H21FN2O2
- 2-(4-Fluorophenyl)-N-(2-oxo-1-propyl-1,2,3,4-tetrahydroquinolin-6-yl)acetamide941953-27-1C20H21FN2O2
- N-(1-Butyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)-2-fluorobenzamide941905-50-6C20H21FN2O2
- N-(1-Butyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)-3-fluorobenzamide941905-53-9C20H21FN2O2
- N-Benzyl-1-[(2-fluorophenyl)carbonyl]piperidine-4-carboxamide942835-03-2C20H21FN2O2
- 4-Fluoro-N-{4-[(4-methylpiperidin-1-yl)carbonyl]phenyl}benzamide925035-35-4C20H21FN2O2
- 1-(3-Fluorobenzoyl)-N-methyl-N-phenylpiperidine-4-carboxamide945299-41-2C20H21FN2O2
- N-Benzyl-1-[(3-fluorophenyl)carbonyl]piperidine-4-carboxamide945336-50-5C20H21FN2O2
- 1-(4-Fluorobenzoyl)-N-methyl-N-phenylpiperidine-4-carboxamide945325-08-6C20H21FN2O2
- 2-(4-Fluorophenyl)-N-(1-propionyl-1,2,3,4-tetrahydroquinolin-7-yl)acetamide946321-31-9C20H21FN2O2
- 4-Fluoro-N-{3-[(4-methylpiperidin-1-yl)carbonyl]phenyl}benzamide1030454-19-3C20H21FN2O2
- 2-Fluoro-N-{3-[(4-methylpiperidin-1-yl)carbonyl]phenyl}benzamide1030504-95-0C20H21FN2O2
- (R)-Citalopram N-oxide1217761-31-3C20H21FN2O2
- 3-(2-Fluorophenyl)-N-[3-methyl-4-(2-oxopyrrolidin-1-yl)phenyl]propanamide1448069-91-7C20H21FN2O2
- N-[2-(4-Fluorophenyl)ethyl]-1-methyl-5-oxo-2-phenylpyrrolidine-3-carboxamide1081136-97-1C20H21FN2O2
- N-(3,4-Dimethylphenyl)-1-[(3-fluorophenyl)carbonyl]prolinamide1266377-28-9C20H21FN2O2
- N-(3,4-Dimethylphenyl)-1-[(4-fluorophenyl)carbonyl]prolinamide1266377-91-6C20H21FN2O2
- 1-[(3-Fluorophenyl)carbonyl]-N-(1-phenylethyl)prolinamide331672-09-4C20H21FN2O2
- 5-[(2,6-Dimethylmorpholin-4-yl)methyl]-2-(3-fluorophenyl)-1,3-benzoxazole1706441-12-4C20H21FN2O2
- 1,2-Benzisoxazole-3-acetamide, alpha-ethyl-N-(1-(2-fluorophenyl)-1-methylethyl)-97872-26-9C20H21FN2O2
- 1,2-Benzisoxazole-3-acetamide, alpha-ethyl-N-(1-(4-fluorophenyl)-1-methylethyl)-97872-27-0C20H21FN2O2
- 3-(2,3-Dihydro-1-benzofuran-5-yl)-N-[(4-fluorophenyl)methyl]pyrrolidine-1-carboxamide2097912-41-7C20H21FN2O2
- 4-{2-[(4-Fluorophenyl)amino]acetyl}-1-[(4-methylphenyl)methyl]pyrrolidin-2-one2380180-38-9C20H21FN2O2
- 6-Fluoro-3-[1-[(3-methoxyphenyl)methyl]piperidin-4-yl]-1,2-benzoxazole2742044-58-0C20H21FN2O2
- Citalopram-d6 N-oxide1189652-54-7C20H21FN2O2
- (R)-Citalopram-d6 N-oxide1217669-62-9C20H21FN2O2
- N-[(2-Fluorophenyl)methyl]-1-[(4-methylphenyl)methyl]-5-oxopyrrolidine-3-carboxamide903294-63-3C20H21FN2O2
- Benzyl 4-fluorospiro[indoline-3,4'-piperidine]-1'-carboxylate2345638-38-0C20H21FN2O2
- rac-(9H-Fluoren-9-yl)methyl (3R,5S)-3-amino-5-fluoropiperidine-1-carboxylate2381530-78-3C20H21FN2O2
- 1-[(4-Fluorophenyl)methyl]-N-(3-methylphenyl)-6-oxopiperidine-2-carboxamide2770581-00-3C20H21FN2O2
- 1-[(4-Fluorophenyl)methyl]-N-(4-methylphenyl)-6-oxopiperidine-2-carboxamide2770579-81-0C20H21FN2O2
- Methyl 5-(4-fluorophenyl)-1H,2H,3H,4H,4aH,5H,6H,10bH-benzo[h]1,6-naphthyridine-2-carboxylate2757874-75-0C20H21FN2O2
- tert-Butyl N-[(4-cyanophenyl)methyl]-N-[(3-fluorophenyl)methyl]carbamate2680723-08-2C20H21FN2O2
- Benzyl N-(1-cyano-1,2-dimethylpropyl)-N-(2-fluorophenyl)carbamate2680755-92-2C20H21FN2O2
- tert-Butyl N-[(3-cyanophenyl)methyl]-N-(4-fluoro-2-methylphenyl)carbamate2680740-31-0C20H21FN2O2
Frequently asked questions
What is the molar mass of C20H21FN2O2?
The molar mass of C20H21FN2O2 is 340.40 g/mol, calculated from standard atomic weights for 20 carbon atoms, 21 hydrogen atoms, 1 fluorine atom, 2 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 346.1964 Da.
How many compounds have the formula C20H21FN2O2?
CompoundList lists 104 compounds with the molecular formula C20H21FN2O2, including Citalopram N-oxide, 1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-3-hydroxy-5-isobenzofurancarbonitrile, 1-[(4-Fluorophenyl)methyl]-N-[(4-methylphenyl)methyl]-5-oxopyrrolidine-2-carboxamide. 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 C20H21FN2O2?
C20H21FN2O2 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.