Molecular formula

C₂₁H₁₃ClN₂O₃

19 compounds have this formula on CompoundList.

Molar mass: 376.80g/mol
Monoisotopic mass: 376.0615Da
Atoms: 40
Elements: 5
Rings plus double bonds: 16

The formula C21H13ClN2O3 describes a molecule made of 21 carbon atoms, 13 hydrogen atoms, 1 chlorine atom, 2 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 × 2166.94%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 133.48%
1.008 × 13 = 13.104 g/mol
Cl Chlorine × 19.41%
35.45 × 1 = 35.450 g/mol
N Nitrogen × 27.43%
14.007 × 2 = 28.014 g/mol
O Oxygen × 312.74%
15.999 × 3 = 47.997 g/mol

Look up another formula

Compounds with the formula C21H13ClN2O3

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

Showing 1 to 19 of 19 compounds

N-[3-Chloro-4-(2-oxochromen-3-yl)phenyl]pyridine-3-carboxamide

CAS 831231-38-0C₂₁H₁₃ClN₂O₃

4-Chloro-N-[4-(4-oxo-3,1-benzoxazin-2-yl)phenyl]benzamide

CAS 351424-44-7C₂₁H₁₃ClN₂O₃

N-(4-Chlorophenyl)-4-(1,3-dioxoisoindol-2-yl)benzamide

CAS 106075-35-8C₂₁H₁₃ClN₂O₃

N-{2-[(4-Chlorophenyl)carbonyl]-1-benzofuran-3-yl}pyridine-3-carboxamide

CAS 929452-45-9C₂₁H₁₃ClN₂O₃

2-Chloro-N-(1,3-dioxo-2-phenyl-2,3-dihydro-1H-isoindol-5-yl)benzamide

CAS 312279-70-2C₂₁H₁₃ClN₂O₃

N-(2-(4-Chlorobenzoyl)benzofuran-3-yl)isonicotinamide

CAS 921042-03-7C₂₁H₁₃ClN₂O₃

3-{[(4-Chlorobenzoyl)oxy]imino}-1-phenyl-1,3-dihydro-2H-indol-2-one

CAS 478261-25-5C₂₁H₁₃ClN₂O₃

3-{[(2-Chlorobenzoyl)oxy]imino}-1-phenyl-1,3-dihydro-2H-indol-2-one

CAS 478261-26-6C₂₁H₁₃ClN₂O₃

N-[2-(4-Chlorophenyl)-4-oxo-4H-chromen-6-yl]pyridine-4-carboxamide

CAS 1040702-96-2C₂₁H₁₃ClN₂O₃

N-(2-Chlorophenyl)-4-(1,3-dioxoisoindol-2-yl)benzamide

CAS 5249-52-5C₂₁H₁₃ClN₂O₃

Phenyl 3-(4-chlorophenyl)-4-oxo-3,4-dihydro-1-phthalazinecarboxylate

CAS 338976-00-4C₂₁H₁₃ClN₂O₃

N-[2-(4-Chlorophenyl)-4-oxo-4H-chromen-6-yl]pyridine-3-carboxamide

CAS 1040695-30-4C₂₁H₁₃ClN₂O₃

N-[2-(2-Chlorophenyl)-4-oxo-4H-chromen-6-yl]pyridine-3-carboxamide

CAS 1010921-29-5C₂₁H₁₃ClN₂O₃

N-[2-(2-Chlorophenyl)-4-oxo-4H-chromen-6-yl]pyridine-4-carboxamide

CAS 1010929-56-2C₂₁H₁₃ClN₂O₃

[(Z)-(2-Oxo-1-phenylindol-3-ylidene)amino] 3-chlorobenzoate

CAS 478261-27-7C₂₁H₁₃ClN₂O₃

3-(4-Chlorophenyl)-2-(2-nitrophenoxy)quinoline

CAS 478260-80-9C₂₁H₁₃ClN₂O₃

4-[1-(2-Chlorobenzoyl)-1H-indazol-3-yl]benzoic acid

CAS 1392809-07-2C₂₁H₁₃ClN₂O₃

4-Chloro-3-[2-(10-oxophenanthren-9(10H)-ylidene)hydrazinyl]benzoic acid

CAS 61100-68-3C₂₁H₁₃ClN₂O₃

1,4-Diamino-2-(4-chlorobenzoyl)anthracene-9,10-dione

CAS 89868-48-4C₂₁H₁₃ClN₂O₃

Frequently asked questions

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What is the molar mass of C21H13ClN2O3?

The molar mass of C21H13ClN2O3 is 376.80 g/mol, calculated from standard atomic weights for 21 carbon atoms, 13 hydrogen atoms, 1 chlorine atom, 2 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 376.0615 Da.

How many compounds have the formula C21H13ClN2O3?

CompoundList lists 19 compounds with the molecular formula C21H13ClN2O3, including N-[3-Chloro-4-(2-oxochromen-3-yl)phenyl]pyridine-3-carboxamide, 4-Chloro-N-[4-(4-oxo-3,1-benzoxazin-2-yl)phenyl]benzamide, N-(4-Chlorophenyl)-4-(1,3-dioxoisoindol-2-yl)benzamide. 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 C21H13ClN2O3?

C21H13ClN2O3 has a degree of unsaturation of 16. 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.