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Molecular formula

C18H21FN4O

39 compounds have this formula on CompoundList.

Molar mass
328.39g/mol
Monoisotopic mass
328.1699Da
Atoms
45
Elements
5
Rings plus double bonds
10

The formula C18H21FN4O describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 fluorine atom, 4 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 × 1865.84%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 216.45%
    1.008 × 21 = 21.168 g/mol
  • F Fluorine × 15.79%
    18.998 × 1 = 18.998 g/mol
  • N Nitrogen × 417.06%
    14.007 × 4 = 56.028 g/mol
  • O Oxygen × 14.87%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C18H21FN4O

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

Showing 1 to 39 of 39 compounds

N-(5-Fluoro-2-methylphenyl)-2-[4-(2-pyridinyl)piperazino]acetamide chemical structure, C18H21FN4O, CAS 380626-14-2
N-(5-Fluoro-2-methylphenyl)-2-[4-(2-pyridinyl)piperazino]acetamide
CAS 380626-14-2C18H21FN4O
2-{[4-(4-Fluorophenyl)piperazin-1-yl]methyl}-2,5,6,7-tetrahydro-3H-cyclopenta[c]pyridazin-3-one chemical structure, C18H21FN4O, CAS 1374527-52-2
2-{[4-(4-Fluorophenyl)piperazin-1-yl]methyl}-2,5,6,7-tetrahydro-3H-cyclopenta[c]pyridazin-3-one
CAS 1374527-52-2C18H21FN4O
2-(4-Fluorophenyl)-N-{[1-(pyrimidin-2-yl)piperidin-4-yl]methyl}acetamide chemical structure, C18H21FN4O, CAS 1234800-66-8
2-(4-Fluorophenyl)-N-{[1-(pyrimidin-2-yl)piperidin-4-yl]methyl}acetamide
CAS 1234800-66-8C18H21FN4O
N-[4,6-Dimethyl-2-(pyrrolidin-1-yl)pyrimidin-5-yl]-2-(4-fluorophenyl)acetamide chemical structure, C18H21FN4O, CAS 1797650-61-3
N-[4,6-Dimethyl-2-(pyrrolidin-1-yl)pyrimidin-5-yl]-2-(4-fluorophenyl)acetamide
CAS 1797650-61-3C18H21FN4O
7-(Cyclohexylamino)-2-(4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one chemical structure, C18H21FN4O, CAS 2109057-80-7
7-(Cyclohexylamino)-2-(4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one
CAS 2109057-80-7C18H21FN4O
N-(2-(Cyclohex-1-en-1-yl)ethyl)-1-(4-fluoro-3-methylphenyl)-1H-1,2,3-triazole-4-carboxamide chemical structure, C18H21FN4O, CAS 1326830-87-8
N-(2-(Cyclohex-1-en-1-yl)ethyl)-1-(4-fluoro-3-methylphenyl)-1H-1,2,3-triazole-4-carboxamide
CAS 1326830-87-8C18H21FN4O
2-(4-Fluorophenyl)-N-{[4-methyl-6-(pyrrolidin-1-yl)pyrimidin-2-yl]methyl}acetamide chemical structure, C18H21FN4O, CAS 1797804-36-4
2-(4-Fluorophenyl)-N-{[4-methyl-6-(pyrrolidin-1-yl)pyrimidin-2-yl]methyl}acetamide
CAS 1797804-36-4C18H21FN4O
N-{2-[(2-Cyano-3-fluorophenyl)amino]ethyl}-1-(prop-2-yn-1-yl)piperidine-4-carboxamide chemical structure, C18H21FN4O, CAS 1280986-78-8
N-{2-[(2-Cyano-3-fluorophenyl)amino]ethyl}-1-(prop-2-yn-1-yl)piperidine-4-carboxamide
CAS 1280986-78-8C18H21FN4O
2-(4-Fluorophenyl)-N-((1-(pyrazin-2-yl)piperidin-4-yl)methyl)acetamide chemical structure, C18H21FN4O, CAS 1396760-64-7
2-(4-Fluorophenyl)-N-((1-(pyrazin-2-yl)piperidin-4-yl)methyl)acetamide
CAS 1396760-64-7C18H21FN4O
3-Fluoro-N-{[4-methyl-6-(piperidin-1-yl)pyrimidin-2-yl]methyl}benzamide chemical structure, C18H21FN4O, CAS 1797618-63-3
3-Fluoro-N-{[4-methyl-6-(piperidin-1-yl)pyrimidin-2-yl]methyl}benzamide
CAS 1797618-63-3C18H21FN4O
2-(4-Fluorophenyl)-N-{[4-(piperidin-1-yl)pyrimidin-2-yl]methyl}acetamide chemical structure, C18H21FN4O, CAS 1797968-65-0
2-(4-Fluorophenyl)-N-{[4-(piperidin-1-yl)pyrimidin-2-yl]methyl}acetamide
CAS 1797968-65-0C18H21FN4O
3-Fluoro-N-{[6-methyl-2-(piperidin-1-yl)pyrimidin-4-yl]methyl}benzamide chemical structure, C18H21FN4O, CAS 1797330-67-6
3-Fluoro-N-{[6-methyl-2-(piperidin-1-yl)pyrimidin-4-yl]methyl}benzamide
CAS 1797330-67-6C18H21FN4O
1-(2-Fluorophenyl)-3-((1-(pyridin-3-yl)piperidin-4-yl)methyl)urea chemical structure, C18H21FN4O, CAS 2034470-24-9
1-(2-Fluorophenyl)-3-((1-(pyridin-3-yl)piperidin-4-yl)methyl)urea
CAS 2034470-24-9C18H21FN4O
(4-(2-Fluorophenyl)piperazin-1-yl)(4,5,6,7-tetrahydro-1H-benzo[d]imidazol-5-yl)methanone chemical structure, C18H21FN4O, CAS 2034503-55-2
(4-(2-Fluorophenyl)piperazin-1-yl)(4,5,6,7-tetrahydro-1H-benzo[d]imidazol-5-yl)methanone
CAS 2034503-55-2C18H21FN4O
3-(2-Fluorophenyl)-1-[3-(1H-1,2,4-triazol-1-yl)-8-azabicyclo[3.2.1]octan-8-yl]propan-1-one chemical structure, C18H21FN4O, CAS 2310015-42-8
3-(2-Fluorophenyl)-1-[3-(1H-1,2,4-triazol-1-yl)-8-azabicyclo[3.2.1]octan-8-yl]propan-1-one
CAS 2310015-42-8C18H21FN4O
N-(1-Cyclopentyl-5-methyl-1H-pyrazol-4-yl)-N-((5-fluoropyridin-2-yl)methyl)acrylamide chemical structure, C18H21FN4O, CAS 2411318-19-7
N-(1-Cyclopentyl-5-methyl-1H-pyrazol-4-yl)-N-((5-fluoropyridin-2-yl)methyl)acrylamide
CAS 2411318-19-7C18H21FN4O
2-(4-Fluorophenyl)-N-[6-(4-methylpiperidin-1-yl)pyrimidin-4-yl]acetamide chemical structure, C18H21FN4O, CAS 1396866-23-1
2-(4-Fluorophenyl)-N-[6-(4-methylpiperidin-1-yl)pyrimidin-4-yl]acetamide
CAS 1396866-23-1C18H21FN4O
(Z)-1-Cyclopentyl-N-(7-fluoroquinoxalin-6-yl)-1-(morpholin-4-yl)methanimine chemical structure, C18H21FN4O, CAS 920034-20-4
(Z)-1-Cyclopentyl-N-(7-fluoroquinoxalin-6-yl)-1-(morpholin-4-yl)methanimine
CAS 920034-20-4C18H21FN4O
1-Ethyl-7-(4-ethylpiperazin-1-yl)-6-fluoro-4-oxoquinoline-3-carbonitrile chemical structure, C18H21FN4O, CAS 1359864-69-9
1-Ethyl-7-(4-ethylpiperazin-1-yl)-6-fluoro-4-oxoquinoline-3-carbonitrile
CAS 1359864-69-9C18H21FN4O
N-(3-Fluoro-4-methylphenyl)-1-(6-methylpyridazin-3-yl)piperidine-3-carboxamide chemical structure, C18H21FN4O, CAS 2320147-44-0
N-(3-Fluoro-4-methylphenyl)-1-(6-methylpyridazin-3-yl)piperidine-3-carboxamide
CAS 2320147-44-0C18H21FN4O
N-[1-(3-Fluorobenzoyl)piperidin-4-yl]-N,6-dimethylpyrimidin-4-amine chemical structure, C18H21FN4O, CAS 2415542-82-2
N-[1-(3-Fluorobenzoyl)piperidin-4-yl]-N,6-dimethylpyrimidin-4-amine
CAS 2415542-82-2C18H21FN4O
N-[1-(2-Fluorobenzoyl)piperidin-4-yl]-N,6-dimethylpyrimidin-4-amine chemical structure, C18H21FN4O, CAS 2415622-28-3
N-[1-(2-Fluorobenzoyl)piperidin-4-yl]-N,6-dimethylpyrimidin-4-amine
CAS 2415622-28-3C18H21FN4O
N-[1-(4-Fluorobenzoyl)piperidin-4-yl]-N,6-dimethylpyrimidin-4-amine chemical structure, C18H21FN4O, CAS 2415533-97-8
N-[1-(4-Fluorobenzoyl)piperidin-4-yl]-N,6-dimethylpyrimidin-4-amine
CAS 2415533-97-8C18H21FN4O
N-{[4-Fluoro-1-(quinoxalin-2-yl)piperidin-4-yl]methyl}cyclopropanecarboxamide chemical structure, C18H21FN4O, CAS 2877672-09-6
N-{[4-Fluoro-1-(quinoxalin-2-yl)piperidin-4-yl]methyl}cyclopropanecarboxamide
CAS 2877672-09-6C18H21FN4O

Frequently asked questions

What is the molar mass of C18H21FN4O?

The molar mass of C18H21FN4O is 328.39 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 fluorine atom, 4 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 328.1699 Da.

How many compounds have the formula C18H21FN4O?

CompoundList lists 39 compounds with the molecular formula C18H21FN4O, including N-(5-Fluoro-2-methylphenyl)-2-[4-(2-pyridinyl)piperazino]acetamide, 2-{[4-(4-Fluorophenyl)piperazin-1-yl]methyl}-2,5,6,7-tetrahydro-3H-cyclopenta[c]pyridazin-3-one, 2-(4-Fluorophenyl)-N-{[1-(pyrimidin-2-yl)piperidin-4-yl]methyl}acetamide. 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 C18H21FN4O?

C18H21FN4O has a degree of unsaturation of 10. 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.