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Molecular formula

C21H18FN3O

31 compounds have this formula on CompoundList.

Molar mass
347.39g/mol
Monoisotopic mass
347.1434Da
Atoms
44
Elements
5
Rings plus double bonds
14

The formula C21H18FN3O describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 1 fluorine atom, 3 nitrogen atoms and 1 oxygen atom. 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 × 2172.61%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 185.22%
    1.008 × 18 = 18.144 g/mol
  • F Fluorine × 15.47%
    18.998 × 1 = 18.998 g/mol
  • N Nitrogen × 312.10%
    14.007 × 3 = 42.021 g/mol
  • O Oxygen × 14.61%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C21H18FN3O

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 31 of 31 compounds

3-[1-(3-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone chemical structure, C21H18FN3O, CAS 860787-72-0
3-[1-(3-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone
CAS 860787-72-0C21H18FN3O
3-[1-(2-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone chemical structure, C21H18FN3O, CAS 860787-73-1
3-[1-(2-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone
CAS 860787-73-1C21H18FN3O
3-[1-(4-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone chemical structure, C21H18FN3O, CAS 861212-05-7
3-[1-(4-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone
CAS 861212-05-7C21H18FN3O
2-Ethyl-3-(4-fluorophenyl)-7-(2-methoxyphenyl)pyrazolo[1,5-a]pyrimidine chemical structure, C21H18FN3O, CAS 895361-73-6
2-Ethyl-3-(4-fluorophenyl)-7-(2-methoxyphenyl)pyrazolo[1,5-a]pyrimidine
CAS 895361-73-6C21H18FN3O
2-(Benzylamino)-7-(4-fluorophenyl)-7,8-dihydroquinazolin-5(6H)-one chemical structure, C21H18FN3O, CAS 587006-51-7
2-(Benzylamino)-7-(4-fluorophenyl)-7,8-dihydroquinazolin-5(6H)-one
CAS 587006-51-7C21H18FN3O
4-(4-Fluorophenyl)-N-[2-(1H-indol-3-yl)ethyl]-1H-pyrrole-2-carboxamide chemical structure, C21H18FN3O, CAS 1219906-40-7
4-(4-Fluorophenyl)-N-[2-(1H-indol-3-yl)ethyl]-1H-pyrrole-2-carboxamide
CAS 1219906-40-7C21H18FN3O
5-[(2,4-Dimethylphenyl)methyl]-2-(4-fluorophenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one chemical structure, C21H18FN3O, CAS 1021261-34-6
5-[(2,4-Dimethylphenyl)methyl]-2-(4-fluorophenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one
CAS 1021261-34-6C21H18FN3O
7-(4-Fluorophenyl)-2-[(3-methylphenyl)amino]-7,8-dihydroquinazolin-5(6H)-one chemical structure, C21H18FN3O, CAS 714925-70-9
7-(4-Fluorophenyl)-2-[(3-methylphenyl)amino]-7,8-dihydroquinazolin-5(6H)-one
CAS 714925-70-9C21H18FN3O
N-(1-Benzyl-3-cyano-4,5-dimethyl-1H-pyrrol-2-yl)-4-fluorobenzenecarboxamide chemical structure, C21H18FN3O, CAS 478032-92-7
N-(1-Benzyl-3-cyano-4,5-dimethyl-1H-pyrrol-2-yl)-4-fluorobenzenecarboxamide
CAS 478032-92-7C21H18FN3O
12-(4-Fluorophenyl)-3-methyl-3,4,5,12-tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-one chemical structure, C21H18FN3O, CAS 727392-82-7
12-(4-Fluorophenyl)-3-methyl-3,4,5,12-tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-one
CAS 727392-82-7C21H18FN3O
2-Pyrrolidinone, 1-[(4-fluorophenyl)methyl]-4-[1-(2-propynyl)-1H-1,3-benzimidazol-2-yl]- chemical structure, C21H18FN3O, CAS 887348-02-9
2-Pyrrolidinone, 1-[(4-fluorophenyl)methyl]-4-[1-(2-propynyl)-1H-1,3-benzimidazol-2-yl]-
CAS 887348-02-9C21H18FN3O
1'-Allyl-6-fluoro-2,3,4,9-tetrahydrospiro[beta-carboline-1,3'-indol]-2'(1'H)-one chemical structure, C21H18FN3O, CAS 920431-14-7
1'-Allyl-6-fluoro-2,3,4,9-tetrahydrospiro[beta-carboline-1,3'-indol]-2'(1'H)-one
CAS 920431-14-7C21H18FN3O
2-Fluoro[1,1'-biphenyl]-4-yl 1-(2-methylpyrazolo[1,5-A]pyrimidin-7-yl)ethyl ether chemical structure, C21H18FN3O, CAS 477888-66-7
2-Fluoro[1,1'-biphenyl]-4-yl 1-(2-methylpyrazolo[1,5-A]pyrimidin-7-yl)ethyl ether
CAS 477888-66-7C21H18FN3O
1-(8-Fluoro-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)-2-(1H-indol-1-yl)ethanone chemical structure, C21H18FN3O, CAS 1351682-69-3
1-(8-Fluoro-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)-2-(1H-indol-1-yl)ethanone
CAS 1351682-69-3C21H18FN3O
2-(3,4-Dimethylphenyl)-5-[(3-fluorophenyl)methyl]-4H,5H-pyrazolo[1,5-a]pyrazin-4-one chemical structure, C21H18FN3O, CAS 1040673-74-2
2-(3,4-Dimethylphenyl)-5-[(3-fluorophenyl)methyl]-4H,5H-pyrazolo[1,5-a]pyrazin-4-one
CAS 1040673-74-2C21H18FN3O
2-(3,4-Dimethylphenyl)-5-[(4-fluorophenyl)methyl]-4H,5H-pyrazolo[1,5-a]pyrazin-4-one chemical structure, C21H18FN3O, CAS 1040673-82-2
2-(3,4-Dimethylphenyl)-5-[(4-fluorophenyl)methyl]-4H,5H-pyrazolo[1,5-a]pyrazin-4-one
CAS 1040673-82-2C21H18FN3O
2-(3,4-Dimethylphenyl)-5-[(2-fluorophenyl)methyl]-4H,5H-pyrazolo[1,5-a]pyrazin-4-one chemical structure, C21H18FN3O, CAS 1040674-06-3
2-(3,4-Dimethylphenyl)-5-[(2-fluorophenyl)methyl]-4H,5H-pyrazolo[1,5-a]pyrazin-4-one
CAS 1040674-06-3C21H18FN3O
1-(8-Fluoro-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)-2-(1H-indol-3-yl)ethanone chemical structure, C21H18FN3O, CAS 1010936-57-8
1-(8-Fluoro-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)-2-(1H-indol-3-yl)ethanone
CAS 1010936-57-8C21H18FN3O
5-(2,5-Dimethylbenzyl)-2-(4-fluorophenyl)pyrazolo[1,5-a]pyrazin-4(5H)-one chemical structure, C21H18FN3O, CAS 1359487-86-7
5-(2,5-Dimethylbenzyl)-2-(4-fluorophenyl)pyrazolo[1,5-a]pyrazin-4(5H)-one
CAS 1359487-86-7C21H18FN3O
(8-Fluoro-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)(1-methyl-1H-indol-6-yl)methanone chemical structure, C21H18FN3O, CAS 1324082-20-3
(8-Fluoro-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)(1-methyl-1H-indol-6-yl)methanone
CAS 1324082-20-3C21H18FN3O
(8-Fluoro-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)(1-methyl-1H-indol-5-yl)methanone chemical structure, C21H18FN3O, CAS 1324079-52-8
(8-Fluoro-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indol-2-yl)(1-methyl-1H-indol-5-yl)methanone
CAS 1324079-52-8C21H18FN3O
N-({[2,3'-Bipyridine]-4-yl}methyl)-1-(4-fluorophenyl)cyclopropane-1-carboxamide chemical structure, C21H18FN3O, CAS 1903071-16-8
N-({[2,3'-Bipyridine]-4-yl}methyl)-1-(4-fluorophenyl)cyclopropane-1-carboxamide
CAS 1903071-16-8C21H18FN3O
Benzamide, 4-fluoro-N-[2-methyl-4-[(2-methylphenyl)azo]phenyl]- chemical structure, C21H18FN3O, CAS 853330-35-5
Benzamide, 4-fluoro-N-[2-methyl-4-[(2-methylphenyl)azo]phenyl]-
CAS 853330-35-5C21H18FN3O
N-(6-Fluoro-2,3,4,9-tetrahydro-1H-carbazol-1-yl)-1H-indole-6-carboxamide chemical structure, C21H18FN3O, CAS 1574478-72-0
N-(6-Fluoro-2,3,4,9-tetrahydro-1H-carbazol-1-yl)-1H-indole-6-carboxamide
CAS 1574478-72-0C21H18FN3O

Frequently asked questions

What is the molar mass of C21H18FN3O?

The molar mass of C21H18FN3O is 347.39 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 1 fluorine atom, 3 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 347.1434 Da.

How many compounds have the formula C21H18FN3O?

CompoundList lists 31 compounds with the molecular formula C21H18FN3O, including 3-[1-(3-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone, 3-[1-(2-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone, 3-[1-(4-Fluorobenzyl)-5,6-dimethyl-1H-1,3-benzimidazol-2-yl]-2(1H)-pyridinone. 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 C21H18FN3O?

C21H18FN3O has a degree of unsaturation of 14. 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.