Molecular formula

C₂₁H₂₅FN₂O

22 compounds have this formula on CompoundList.

Molar mass: 340.44g/mol
Monoisotopic mass: 340.1951Da
Atoms: 50
Elements: 5
Rings plus double bonds: 10

The formula C21H25FN2O describes a molecule made of 21 carbon atoms, 25 hydrogen atoms, 1 fluorine atom, 2 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 × 2174.09%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 257.40%
1.008 × 25 = 25.200 g/mol
F Fluorine × 15.58%
18.998 × 1 = 18.998 g/mol
N Nitrogen × 28.23%
14.007 × 2 = 28.014 g/mol
O Oxygen × 14.70%
15.999 × 1 = 15.999 g/mol

Look up another formula

Compounds with the formula C21H25FN2O

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

Showing 1 to 22 of 22 compounds

1-[2-(3,4-Dihydro-1H-2-benzopyran-1-yl)ethyl]-4-(4-fluorophenyl)piperazine

CAS 170858-36-3C₂₁H₂₅FN₂O

N-[2-(4-Fluorophenyl)ethyl]-N'-[1-(3-isopropenylphenyl)-1-methylethyl]urea

CAS 429627-68-9C₂₁H₂₅FN₂O

4-(tert-Butyl)phenyl 4-(2-fluorophenyl)piperazinyl ketone

CAS 432015-75-3C₂₁H₂₅FN₂O

3-Fluoro-N-(2-(1-propyl-1,2,3,4-tetrahydroquinolin-6-yl)ethyl)benzamide

CAS 955791-04-5C₂₁H₂₅FN₂O

3-(4-Benzylpiperidin-1-yl)-N-(2-fluorophenyl)propanamide

CAS 100222-10-4C₂₁H₂₅FN₂O

N-(4-Fluorophenyl)-N-(1-phenethylpiperidin-4-yl)acetamide

CAS 244195-30-0C₂₁H₂₅FN₂O

Para-fluoro benzyl fentanyl

CAS 202859-28-7C₂₁H₂₅FN₂O

N-Benzyl-1-[(2-fluorophenyl)methyl]-N-methylpiperidine-3-carboxamide

CAS 690712-10-8C₂₁H₂₅FN₂O

2-Fluoro-N-(2-(1-propyl-1,2,3,4-tetrahydroquinolin-6-yl)ethyl)benzamide

CAS 955527-74-9C₂₁H₂₅FN₂O

1-(4-Fluorobenzyl)-N-(4-methylbenzyl)piperidine-4-carboxamide

CAS 429641-17-8C₂₁H₂₅FN₂O

4-Fluoro-N-(2-(1-propyl-1,2,3,4-tetrahydroquinolin-6-yl)ethyl)benzamide

CAS 955592-16-2C₂₁H₂₅FN₂O

N-Benzyl-1-(4-fluorobenzyl)-N-methylpiperidine-4-carboxamide

CAS 510757-20-7C₂₁H₂₅FN₂O

1-(4-Fluorobenzyl)-N-(2-phenylethyl)piperidine-4-carboxamide

CAS 429635-84-7C₂₁H₂₅FN₂O

(3-(Dimethylamino)phenyl)(3-(4-fluorophenyl)azepan-1-yl)methanone

CAS 1797859-40-5C₂₁H₂₅FN₂O

1-(2-Fluorobenzyl)-N-(4-methylbenzyl)piperidine-4-carboxamide

CAS 755007-11-5C₂₁H₂₅FN₂O

N-(3,4-Dimethylphenyl)-1-(4-fluorobenzyl)piperidine-4-carboxamide

CAS 1019060-89-9C₂₁H₂₅FN₂O

3-(4-Fluorophenyl)-N-phenethylazepane-1-carboxamide

CAS 1705670-17-2C₂₁H₂₅FN₂O

1-[4-(4-Fluoroanilino)-1-(2-phenylethyl)piperidin-4-yl]ethan-1-one

CAS 61380-16-3C₂₁H₂₅FN₂O

4-Fluoro-N-{2-[2-(1-methylpiperidin-2-yl)ethyl]phenyl}benzamide

CAS 58754-07-7C₂₁H₂₅FN₂O

N-(1-Benzylpiperidin-4-yl)-N-(3-fluorophenyl)propanamide

CAS 2338332-21-9C₂₁H₂₅FN₂O

1-[4-(4-Fluorophenyl)-3-buten-1-yl]-4-(2-methoxyphenyl)-piperazine

CAS 184951-50-6C₂₁H₂₅FN₂O

(2S,4R)-4-Fluoro-N-((S)-(4-isopropylphenyl)(phenyl)methyl)pyrrolidine-2-carboxamide

CAS 2839917-57-4C₂₁H₂₅FN₂O

Frequently asked questions

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What is the molar mass of C21H25FN2O?

The molar mass of C21H25FN2O is 340.44 g/mol, calculated from standard atomic weights for 21 carbon atoms, 25 hydrogen atoms, 1 fluorine atom, 2 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 340.1951 Da.

How many compounds have the formula C21H25FN2O?

CompoundList lists 22 compounds with the molecular formula C21H25FN2O, including 1-[2-(3,4-Dihydro-1H-2-benzopyran-1-yl)ethyl]-4-(4-fluorophenyl)piperazine, N-[2-(4-Fluorophenyl)ethyl]-N'-[1-(3-isopropenylphenyl)-1-methylethyl]urea, 4-(tert-Butyl)phenyl 4-(2-fluorophenyl)piperazinyl ketone. 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 C21H25FN2O?

C21H25FN2O 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.