Molecular formula

C₂₁H₁₉F₂N₃O₃

23 compounds have this formula on CompoundList.

Molar mass: 399.40g/mol
Monoisotopic mass: 402.1583Da
Atoms: 48
Elements: 5
Rings plus double bonds: 13

The formula C21H19F2N3O3 describes a molecule made of 21 carbon atoms, 19 hydrogen atoms, 2 fluorine atoms, 3 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 × 2163.15%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 194.80%
1.008 × 19 = 19.152 g/mol
F Fluorine × 29.51%
18.998 × 2 = 37.996 g/mol
N Nitrogen × 310.52%
14.007 × 3 = 42.021 g/mol
O Oxygen × 312.02%
15.999 × 3 = 47.997 g/mol

Look up another formula

Compounds with the formula C21H19F2N3O3

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

Showing 1 to 23 of 23 compounds

Difloxacin

CAS 98106-17-3C₂₁H₁₉F₂N₃O₃

Pyrido[1,2-A]benzimidazole-4-carboxamide, 5-(ethoxymethyl)-7-fluoro-N-(2-fluorophenyl)-1,2,3,5-tetrahydro-3-oxo-

CAS 205701-85-5C₂₁H₁₉F₂N₃O₃

3-[4-(2-Fluorobenzoyl)piperazin-1-yl]-1-(4-fluorophenyl)pyrrolidine-2,5-dione

CAS 361373-65-1C₂₁H₁₉F₂N₃O₃

3-Quinolinecarboxylic acid, 6-fluoro-1-(4-fluoro-2-methylphenyl)-1,4-dihydro-4-oxo-7-(1-piperazinyl)-

CAS 164662-40-2C₂₁H₁₉F₂N₃O₃

3-Quinolinecarboxylic acid, 6-fluoro-1-(2-fluoro-4-methylphenyl)-1,4-dihydro-4-oxo-7-(1-piperazinyl)-

CAS 164662-41-3C₂₁H₁₉F₂N₃O₃

N-[1-(Cyclopropanecarbonyl)-3,4-dihydro-2H-quinolin-7-yl]-N'-(2,5-difluorophenyl)oxamide

CAS 898413-58-6C₂₁H₁₉F₂N₃O₃

2-(4-Fluorophenoxy)-N-{3-[3-(4-fluorophenyl)-6-oxo-1,6-dihydropyridazin-1-yl]propyl}acetamide

CAS 1058499-23-2C₂₁H₁₉F₂N₃O₃

Difloxacin-d3 (methyl-d3)

CAS 1173147-93-7C₂₁H₁₉F₂N₃O₃

N-(4-Methoxybenzyl)-4'-(piperidin-1-ylsulfonyl)biphenyl-3-carboxamide

CAS 1216890-91-3C₂₁H₁₉F₂N₃O₃

N-(2,4-Difluorophenyl)-2-(3-(4-ethoxyphenyl)-6-oxopyridazin-1(6H)-yl)propanamide

CAS 1202997-39-4C₂₁H₁₉F₂N₃O₃

N-(2,5-Difluorophenyl)-4-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)butanamide

CAS 946321-86-4C₂₁H₁₉F₂N₃O₃

N-(3,4-Difluorophenyl)-4-(3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)butanamide

CAS 953258-98-5C₂₁H₁₉F₂N₃O₃

N-(2-((6-(4-Ethoxyphenyl)pyridazin-3-yl)oxy)ethyl)-2,4-difluorobenzamide

CAS 920249-91-8C₂₁H₁₉F₂N₃O₃

2-(2,4-Difluorophenoxy)-N-[3-(6-oxo-3-phenyl-1,6-dihydropyridazin-1-yl)propyl]acetamide

CAS 1021253-81-5C₂₁H₁₉F₂N₃O₃

2-(2-Fluorophenoxy)-N-(3-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)propyl)acetamide

CAS 1040672-09-0C₂₁H₁₉F₂N₃O₃

N-(2-((6-(4-Ethoxyphenyl)pyridazin-3-yl)oxy)ethyl)-2,6-difluorobenzamide

CAS 920409-18-3C₂₁H₁₉F₂N₃O₃

N-(2-(3-(4-Ethoxyphenyl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,6-difluorobenzamide

CAS 921578-70-3C₂₁H₁₉F₂N₃O₃

N-(2-(3-(4-Ethoxyphenyl)-6-oxopyridazin-1(6H)-yl)ethyl)-3,4-difluorobenzamide

CAS 921533-00-8C₂₁H₁₉F₂N₃O₃

N-(2-(3-(4-Ethoxyphenyl)-6-oxopyridazin-1(6H)-yl)ethyl)-2,4-difluorobenzamide

CAS 921533-65-5C₂₁H₁₉F₂N₃O₃

(4-((4-Fluorobenzyl)oxy)-1-(4-fluorophenyl)-1H-pyrazol-3-yl)(morpholino)methanone

CAS 1172741-30-8C₂₁H₁₉F₂N₃O₃

3-(1-(2-(2,4-Difluorophenyl)acetyl)piperidin-4-yl)quinazoline-2,4(1H,3H)-dione

CAS 2034347-62-9C₂₁H₁₉F₂N₃O₃

3-Benzyl-8-(2,6-difluorobenzoyl)-1,3,8-triazaspiro[4.5]decane-2,4-dione

CAS 1021089-40-6C₂₁H₁₉F₂N₃O₃

Benzamide,4-[4-[(2,4-difluorophenyl)methoxy]-1,6-dihydro-1-(1-methylethyl)-6-oxo-2-pyrimidinyl]-

CAS 883995-28-6C₂₁H₁₉F₂N₃O₃

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 C21H19F2N3O3?

The molar mass of C21H19F2N3O3 is 399.40 g/mol, calculated from standard atomic weights for 21 carbon atoms, 19 hydrogen atoms, 2 fluorine atoms, 3 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 402.1583 Da.

How many compounds have the formula C21H19F2N3O3?

CompoundList lists 23 compounds with the molecular formula C21H19F2N3O3, including Difloxacin, Pyrido[1,2-A]benzimidazole-4-carboxamide, 5-(ethoxymethyl)-7-fluoro-N-(2-fluorophenyl)-1,2,3,5-tetrahydro-3-oxo-, 3-[4-(2-Fluorobenzoyl)piperazin-1-yl]-1-(4-fluorophenyl)pyrrolidine-2,5-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 C21H19F2N3O3?

C21H19F2N3O3 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.