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Molecular formula

C21H18ClFN4O3

13 compounds have this formula on CompoundList.

Molar mass
428.85g/mol
Monoisotopic mass
428.1051Da
Atoms
48
Elements
6
Rings plus double bonds
14

The formula C21H18ClFN4O3 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 1 chlorine atom, 1 fluorine atom, 4 nitrogen atoms 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 × 2158.82%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 184.23%
    1.008 × 18 = 18.144 g/mol
  • Cl Chlorine × 18.27%
    35.45 × 1 = 35.450 g/mol
  • F Fluorine × 14.43%
    18.998 × 1 = 18.998 g/mol
  • N Nitrogen × 413.06%
    14.007 × 4 = 56.028 g/mol
  • O Oxygen × 311.19%
    15.999 × 3 = 47.997 g/mol
Look up another formula

Compounds with the formula C21H18ClFN4O3

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

Showing 1 to 13 of 13 compounds

3-(2-Chloro-6-fluorophenyl)-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-4,5-dihydro-5-isoxazolecarboxamide chemical structure, C21H18ClFN4O3, CAS 712347-03-0
3-(2-Chloro-6-fluorophenyl)-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-4,5-dihydro-5-isoxazolecarboxamide
CAS 712347-03-0C21H18ClFN4O3
Afatinib impurity 11 chemical structure, C21H18ClFN4O3, CAS 1402086-20-7
Afatinib impurity 11
CAS 1402086-20-7C21H18ClFN4O3
N-(4-Chlorobenzyl)-2-(1-(3-fluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carbonyl)hydrazinecarboxamide chemical structure, C21H18ClFN4O3, CAS 1105206-08-3
N-(4-Chlorobenzyl)-2-(1-(3-fluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carbonyl)hydrazinecarboxamide
CAS 1105206-08-3C21H18ClFN4O3
Methyl 3-({[4-(3-chloro-4-fluorophenyl)-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate chemical structure, C21H18ClFN4O3, CAS 1219565-79-3
Methyl 3-({[4-(3-chloro-4-fluorophenyl)-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate
CAS 1219565-79-3C21H18ClFN4O3
3-Butyl-1-((3-(4-chloro-3-fluorophenyl)-1,2,4-oxadiazol-5-yl)methyl)quinazoline-2,4(1H,3H)-dione chemical structure, C21H18ClFN4O3, CAS 1207012-51-8
3-Butyl-1-((3-(4-chloro-3-fluorophenyl)-1,2,4-oxadiazol-5-yl)methyl)quinazoline-2,4(1H,3H)-dione
CAS 1207012-51-8C21H18ClFN4O3
Methyl 2-({[4-(4-chlorophenyl)-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)-5-fluorobenzoate chemical structure, C21H18ClFN4O3, CAS 1219544-63-4
Methyl 2-({[4-(4-chlorophenyl)-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)-5-fluorobenzoate
CAS 1219544-63-4C21H18ClFN4O3
Methyl 4-({[4-(5-chloro-2-fluorophenyl)-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate chemical structure, C21H18ClFN4O3, CAS 1081131-04-5
Methyl 4-({[4-(5-chloro-2-fluorophenyl)-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate
CAS 1081131-04-5C21H18ClFN4O3
1-Methoxypropan-2-yl 2-amino-1-(3-chloro-4-fluorophenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate chemical structure, C21H18ClFN4O3, CAS 799817-13-3
1-Methoxypropan-2-yl 2-amino-1-(3-chloro-4-fluorophenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate
CAS 799817-13-3C21H18ClFN4O3
Methyl 3-({[4-(5-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate chemical structure, C21H18ClFN4O3, CAS 1040707-35-4
Methyl 3-({[4-(5-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate
CAS 1040707-35-4C21H18ClFN4O3
Methyl 2-({[4-(4-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate chemical structure, C21H18ClFN4O3, CAS 1040696-09-0
Methyl 2-({[4-(4-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate
CAS 1040696-09-0C21H18ClFN4O3
Methyl 4-({[4-(4-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate chemical structure, C21H18ClFN4O3, CAS 1040700-55-7
Methyl 4-({[4-(4-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate
CAS 1040700-55-7C21H18ClFN4O3
Methyl 2-({[4-(5-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate chemical structure, C21H18ClFN4O3, CAS 1040715-02-3
Methyl 2-({[4-(5-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate
CAS 1040715-02-3C21H18ClFN4O3
Methyl 3-({[4-(4-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate chemical structure, C21H18ClFN4O3, CAS 1040692-99-6
Methyl 3-({[4-(4-chloro-2-fluorophenyl)-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridin-5-yl]carbonyl}amino)benzoate
CAS 1040692-99-6C21H18ClFN4O3

Frequently asked questions

What is the molar mass of C21H18ClFN4O3?

The molar mass of C21H18ClFN4O3 is 428.85 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 1 chlorine atom, 1 fluorine atom, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 428.1051 Da.

How many compounds have the formula C21H18ClFN4O3?

CompoundList lists 13 compounds with the molecular formula C21H18ClFN4O3, including 3-(2-Chloro-6-fluorophenyl)-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-4,5-dihydro-5-isoxazolecarboxamide, Afatinib impurity 11, N-(4-Chlorobenzyl)-2-(1-(3-fluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carbonyl)hydrazinecarboxamide. 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 C21H18ClFN4O3?

C21H18ClFN4O3 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.