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Molecular formula

C21H20ClN3O2

115 compounds have this formula on CompoundList.

Molar mass
381.86g/mol
Monoisotopic mass
381.1244Da
Atoms
47
Elements
5
Rings plus double bonds
13

The formula C21H20ClN3O2 describes a molecule made of 21 carbon atoms, 20 hydrogen atoms, 1 chlorine atom, 3 nitrogen atoms and 2 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 × 2166.05%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 205.28%
    1.008 × 20 = 20.160 g/mol
  • Cl Chlorine × 19.28%
    35.45 × 1 = 35.450 g/mol
  • N Nitrogen × 311.00%
    14.007 × 3 = 42.021 g/mol
  • O Oxygen × 28.38%
    15.999 × 2 = 31.998 g/mol
Look up another formula

Compounds with the formula C21H20ClN3O2

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

Showing 101 to 115 of 115 compounds

(2-Chlorophenyl){4-[(1-methyl-1H-indol-2-yl)carbonyl]piperazin-1-yl}methanone chemical structure, C21H20ClN3O2, CAS 1081147-70-7
(2-Chlorophenyl){4-[(1-methyl-1H-indol-2-yl)carbonyl]piperazin-1-yl}methanone
CAS 1081147-70-7C21H20ClN3O2
2-(8-Chloro-10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)-N-(p-tolyl)acetamide chemical structure, C21H20ClN3O2, CAS 1226455-15-7
2-(8-Chloro-10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)-N-(p-tolyl)acetamide
CAS 1226455-15-7C21H20ClN3O2
N-(2-Chlorophenyl)-2-(8-methyl-10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)acetamide chemical structure, C21H20ClN3O2, CAS 1251687-86-1
N-(2-Chlorophenyl)-2-(8-methyl-10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)acetamide
CAS 1251687-86-1C21H20ClN3O2
N-(4-Chlorophenyl)-2-(8-methyl-10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)acetamide chemical structure, C21H20ClN3O2, CAS 1251550-69-2
N-(4-Chlorophenyl)-2-(8-methyl-10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)acetamide
CAS 1251550-69-2C21H20ClN3O2
N-(2-Chlorobenzyl)-2-(10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)acetamide chemical structure, C21H20ClN3O2, CAS 1251552-24-5
N-(2-Chlorobenzyl)-2-(10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)acetamide
CAS 1251552-24-5C21H20ClN3O2
Methyl (e)-4-((6-chloropyridin-3-yl)methyl)-1-(((dimethylamino)methylene)amino)-2-naphthoate chemical structure, C21H20ClN3O2, CAS 1268516-29-5
Methyl (e)-4-((6-chloropyridin-3-yl)methyl)-1-(((dimethylamino)methylene)amino)-2-naphthoate
CAS 1268516-29-5C21H20ClN3O2
Methanone, [4-(2-chlorophenyl)-1-piperazinyl](5-methyl-3-phenyl-4-isoxazolyl)- chemical structure, C21H20ClN3O2, CAS 850471-96-4
Methanone, [4-(2-chlorophenyl)-1-piperazinyl](5-methyl-3-phenyl-4-isoxazolyl)-
CAS 850471-96-4C21H20ClN3O2
(4-Chlorophenyl)[4-[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]-1-piperidinyl]methanone chemical structure, C21H20ClN3O2, CAS 923547-36-8
(4-Chlorophenyl)[4-[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]-1-piperidinyl]methanone
CAS 923547-36-8C21H20ClN3O2
N-[2-Amino-1-(naphthalen-2-yl)ethyl]-1-oxo-2,3-dihydro-1H-isoindole-5-carboxamide hydrochloride chemical structure, C21H20ClN3O2, CAS 2639417-22-2
N-[2-Amino-1-(naphthalen-2-yl)ethyl]-1-oxo-2,3-dihydro-1H-isoindole-5-carboxamide hydrochloride
CAS 2639417-22-2C21H20ClN3O2
3-(2-Chlorophenyl)-5-{1-[(3-methylphenyl)acetyl]pyrrolidin-2-yl}-1,2,4-oxadiazole chemical structure, C21H20ClN3O2, CAS 1798633-69-8
3-(2-Chlorophenyl)-5-{1-[(3-methylphenyl)acetyl]pyrrolidin-2-yl}-1,2,4-oxadiazole
CAS 1798633-69-8C21H20ClN3O2
N-[(4-Chlorophenyl)methyl]-2-(4-ethyl-6-oxo-2-phenyl-1,6-dihydropyrimidin-1-yl)acetamide chemical structure, C21H20ClN3O2, CAS 1775418-89-7
N-[(4-Chlorophenyl)methyl]-2-(4-ethyl-6-oxo-2-phenyl-1,6-dihydropyrimidin-1-yl)acetamide
CAS 1775418-89-7C21H20ClN3O2
3-(2-Chlorophenyl)-5-[1-(3,4-dimethylbenzoyl)pyrrolidin-2-yl]-1,2,4-oxadiazole chemical structure, C21H20ClN3O2, CAS 1795293-40-1
3-(2-Chlorophenyl)-5-[1-(3,4-dimethylbenzoyl)pyrrolidin-2-yl]-1,2,4-oxadiazole
CAS 1795293-40-1C21H20ClN3O2
3-(2-Chlorophenyl)-5-{1-[(4-methylphenyl)acetyl]pyrrolidin-2-yl}-1,2,4-oxadiazole chemical structure, C21H20ClN3O2, CAS 1795411-49-2
3-(2-Chlorophenyl)-5-{1-[(4-methylphenyl)acetyl]pyrrolidin-2-yl}-1,2,4-oxadiazole
CAS 1795411-49-2C21H20ClN3O2
3-(2-Chlorophenyl)-5-{1-[(2-methylphenyl)acetyl]pyrrolidin-2-yl}-1,2,4-oxadiazole chemical structure, C21H20ClN3O2, CAS 1787855-20-2
3-(2-Chlorophenyl)-5-{1-[(2-methylphenyl)acetyl]pyrrolidin-2-yl}-1,2,4-oxadiazole
CAS 1787855-20-2C21H20ClN3O2
3-(2-Chlorophenyl)-5-[1-(3-phenylpropanoyl)pyrrolidin-2-yl]-1,2,4-oxadiazole chemical structure, C21H20ClN3O2, CAS 1795181-13-3
3-(2-Chlorophenyl)-5-[1-(3-phenylpropanoyl)pyrrolidin-2-yl]-1,2,4-oxadiazole
CAS 1795181-13-3C21H20ClN3O2

Frequently asked questions

What is the molar mass of C21H20ClN3O2?

The molar mass of C21H20ClN3O2 is 381.86 g/mol, calculated from standard atomic weights for 21 carbon atoms, 20 hydrogen atoms, 1 chlorine atom, 3 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 381.1244 Da.

How many compounds have the formula C21H20ClN3O2?

CompoundList lists 115 compounds with the molecular formula C21H20ClN3O2, including (2-Chlorophenyl){4-[(1-methyl-1H-indol-2-yl)carbonyl]piperazin-1-yl}methanone, 2-(8-Chloro-10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)-N-(p-tolyl)acetamide, N-(2-Chlorophenyl)-2-(8-methyl-10-oxo-3,4-dihydrobenzo[b][1,6]naphthyridin-2(1H,5H,10H)-yl)acetamide. 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 C21H20ClN3O2?

C21H20ClN3O2 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.