Molecular formula

C₂₁H₁₈FNO₃

21 compounds have this formula on CompoundList.

Molar mass: 351.38g/mol
Monoisotopic mass: 351.1271Da
Atoms: 44
Elements: 5
Rings plus double bonds: 13

The formula C21H18FNO3 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 1 fluorine atom, 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 × 2171.78%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 185.16%
1.008 × 18 = 18.144 g/mol
F Fluorine × 15.41%
18.998 × 1 = 18.998 g/mol
N Nitrogen × 13.99%
14.007 × 1 = 14.007 g/mol
O Oxygen × 313.66%
15.999 × 3 = 47.997 g/mol

Look up another formula

Compounds with the formula C21H18FNO3

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

Showing 1 to 21 of 21 compounds

N-(2-Fluorophenyl)-4-[(2-methoxyphenoxy)methyl]benzamide

CAS 445030-69-3C₂₁H₁₈FNO₃

(2-Fluorophenyl) 4-(naphthalen-1-ylcarbamoyl)butanoate

CAS 5768-71-8C₂₁H₁₈FNO₃

7-(4-Fluorophenyl)-4-(3-hydroxyphenyl)-4,6,7,8-tetrahydroquinoline-2,5(1H,3H)-dione

CAS 886633-42-7C₂₁H₁₈FNO₃

3-(4-Fluorophenyl)-3,4,7,8,9,10-hexahydro-2H,6H-benzo[3,4]chromeno[8,7-e][1,3]oxazin-6-one

CAS 844449-78-1C₂₁H₁₈FNO₃

4-Fluoro-2-[3-(2-phenylethoxy)anilino]benzoic acid

CAS 2996821-62-4C₂₁H₁₈FNO₃

Carbamic acid, [3-fluoro-4-(phenylmethoxy)phenyl]-, phenylmethyl ester

CAS 790703-40-1C₂₁H₁₈FNO₃

4-[C-[(4-Fluorophenyl)methyl]-N-(4-methylphenyl)carbonimidoyl]benzene-1,2,3-triol

CAS 1224164-25-3C₂₁H₁₈FNO₃

N-(2-Fluorophenyl)-4-[(3-methoxyphenoxy)methyl]benzamide

CAS 514842-44-5C₂₁H₁₈FNO₃

3-[1-(4-Acetylphenyl)-5-(4-fluorophenyl)-1H-pyrrol-2-yl]propanoic acid

CAS 1566-11-6C₂₁H₁₈FNO₃

5-(4-Fluorobenzoyl)-5,6,7,8,9,10-hexahydrocyclohepta(b)-1,3-dioxolo(4,5-f)indole

CAS 50332-29-1C₂₁H₁₈FNO₃

Cyclohepta(b)-1,3-dioxolo(4,5-f)indole, 5,6,7,8,9,10-hexahydro-5-(m-fluorobenzoyl)-

CAS 50332-30-4C₂₁H₁₈FNO₃

Phenyl 3-amino-2-(benzyloxy)-5-fluoro-6-methylbenzoate

CAS 1207284-89-6C₂₁H₁₈FNO₃

9-(4-Fluorophenyl)-6-methyl-2,3,9,10-tetrahydro-8H-cyclopenta[3,4]chromeno[6,7-e][1,3]oxazin-4(1H)-one

CAS 850242-64-7C₂₁H₁₈FNO₃

3-(2-Fluorobenzyl)-3,4,8,9-tetrahydro-2H-cyclopenta[3,4]chromeno[8,7-e][1,3]oxazin-6(7H)-one

CAS 848746-52-1C₂₁H₁₈FNO₃

3-(4-Fluorobenzyl)-3,4,8,9-tetrahydro-2H-cyclopenta[3,4]chromeno[8,7-e][1,3]oxazin-6(7H)-one

CAS 847246-92-8C₂₁H₁₈FNO₃

Methyl 4-(2-fluoro-4-methoxyphenyl)-7-(prop-1-en-2-yl)quinoline-2-carboxylate

CAS 1432731-69-5C₂₁H₁₈FNO₃

Prop-2-en-1-yl 4-ethoxy-2-(4-fluorophenyl)quinoline-6-carboxylate

CAS 2549035-86-9C₂₁H₁₈FNO₃

5-Fluoro-2-hydroxy-N-[3-(2-phenylethoxy)phenyl]benzamide

CAS 648924-33-8C₂₁H₁₈FNO₃

4-Fluoro-2-hydroxy-N-[3-(2-phenylethoxy)phenyl]benzamide

CAS 648924-41-8C₂₁H₁₈FNO₃

Benzyl N-(4-fluorophenyl)-N-[(2-hydroxyphenyl)methyl]carbamate

CAS 2680785-09-3C₂₁H₁₈FNO₃

5-Fluoro-1,4-dihydro-4-oxo-1-[(1,2,3,4-tetrahydro-1-naphthalenyl)methyl]-3-quinolinecarboxylic acid

CAS 1224510-18-2C₂₁H₁₈FNO₃

Frequently asked questions

Still have a question?

The help centre explains buying, quotes and supplier badges step by step, or you can write to our team.

Help centre Contact us

What is the molar mass of C21H18FNO3?

The molar mass of C21H18FNO3 is 351.38 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 1 fluorine atom, 1 nitrogen atom and 3 oxygen atoms. The monoisotopic mass is 351.1271 Da.

How many compounds have the formula C21H18FNO3?

CompoundList lists 21 compounds with the molecular formula C21H18FNO3, including N-(2-Fluorophenyl)-4-[(2-methoxyphenoxy)methyl]benzamide, (2-Fluorophenyl) 4-(naphthalen-1-ylcarbamoyl)butanoate, 7-(4-Fluorophenyl)-4-(3-hydroxyphenyl)-4,6,7,8-tetrahydroquinoline-2,5(1H,3H)-dione. 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 C21H18FNO3?

C21H18FNO3 has a degree of unsaturation of 13. 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.