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Molecular formula

C21H16Cl2N2O2

25 compounds have this formula on CompoundList.

Molar mass
399.27g/mol
Monoisotopic mass
398.0589Da
Atoms
43
Elements
5
Rings plus double bonds
14

The formula C21H16Cl2N2O2 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 2 chlorine atoms, 2 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 × 2163.17%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 164.04%
    1.008 × 16 = 16.128 g/mol
  • Cl Chlorine × 217.76%
    35.45 × 2 = 70.900 g/mol
  • N Nitrogen × 27.02%
    14.007 × 2 = 28.014 g/mol
  • O Oxygen × 28.01%
    15.999 × 2 = 31.998 g/mol
Look up another formula

Compounds with the formula C21H16Cl2N2O2

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

Showing 1 to 25 of 25 compounds

N'-(2-Chlorobenzylidene)-4-((4-chlorobenzyl)oxy)benzohydrazide chemical structure, C21H16Cl2N2O2, CAS 393801-50-8
N'-(2-Chlorobenzylidene)-4-((4-chlorobenzyl)oxy)benzohydrazide
CAS 393801-50-8C21H16Cl2N2O2
2-Chloro-N'-(3-((4-chlorobenzyl)oxy)benzylidene)benzohydrazide chemical structure, C21H16Cl2N2O2, CAS 765274-98-4
2-Chloro-N'-(3-((4-chlorobenzyl)oxy)benzylidene)benzohydrazide
CAS 765274-98-4C21H16Cl2N2O2
4-Chloro-N'-(4-((4-chlorobenzyl)oxy)benzylidene)benzohydrazide chemical structure, C21H16Cl2N2O2, CAS 393858-80-5
4-Chloro-N'-(4-((4-chlorobenzyl)oxy)benzylidene)benzohydrazide
CAS 393858-80-5C21H16Cl2N2O2
N'-(3-Chlorobenzylidene)-4-((4-chlorobenzyl)oxy)benzohydrazide chemical structure, C21H16Cl2N2O2, CAS 443991-72-8
N'-(3-Chlorobenzylidene)-4-((4-chlorobenzyl)oxy)benzohydrazide
CAS 443991-72-8C21H16Cl2N2O2
N'-(2-Chlorobenzylidene)-2-((4-chlorobenzyl)oxy)benzohydrazide chemical structure, C21H16Cl2N2O2, CAS 347411-61-4
N'-(2-Chlorobenzylidene)-2-((4-chlorobenzyl)oxy)benzohydrazide
CAS 347411-61-4C21H16Cl2N2O2
N'-(4-Chlorobenzylidene)-4-((4-chlorobenzyl)oxy)benzohydrazide chemical structure, C21H16Cl2N2O2, CAS 396109-05-0
N'-(4-Chlorobenzylidene)-4-((4-chlorobenzyl)oxy)benzohydrazide
CAS 396109-05-0C21H16Cl2N2O2
9-Chloro-5-(3-chlorophenyl)-2-(5-methyl-2-furyl)-1,10b-dihydropyrazolo[1,5-c][1,3]benzoxazine chemical structure, C21H16Cl2N2O2, CAS 452052-25-4
9-Chloro-5-(3-chlorophenyl)-2-(5-methyl-2-furyl)-1,10b-dihydropyrazolo[1,5-c][1,3]benzoxazine
CAS 452052-25-4C21H16Cl2N2O2
2-Chloro-N-[2-[(2-chlorobenzoyl)amino]-4-methylphenyl]benzamide chemical structure, C21H16Cl2N2O2, CAS 548778-26-3
2-Chloro-N-[2-[(2-chlorobenzoyl)amino]-4-methylphenyl]benzamide
CAS 548778-26-3C21H16Cl2N2O2
3-Chloro-N-[2-[(3-chlorobenzoyl)amino]-4-methylphenyl]benzamide chemical structure, C21H16Cl2N2O2, CAS 547728-07-4
3-Chloro-N-[2-[(3-chlorobenzoyl)amino]-4-methylphenyl]benzamide
CAS 547728-07-4C21H16Cl2N2O2
6-Chloro-1-[(2-chlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole chemical structure, C21H16Cl2N2O2, CAS 329234-77-7
6-Chloro-1-[(2-chlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole
CAS 329234-77-7C21H16Cl2N2O2
6-Chloro-1-[(3-chlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole chemical structure, C21H16Cl2N2O2, CAS 329234-83-5
6-Chloro-1-[(3-chlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole
CAS 329234-83-5C21H16Cl2N2O2
6-Chloro-1-[(4-chlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole chemical structure, C21H16Cl2N2O2, CAS 329234-85-7
6-Chloro-1-[(4-chlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole
CAS 329234-85-7C21H16Cl2N2O2
1-[(3,4-Dichlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole chemical structure, C21H16Cl2N2O2, CAS 339009-70-0
1-[(3,4-Dichlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole
CAS 339009-70-0C21H16Cl2N2O2
2-(2,4-Dichlorophenoxy)-N'-(diphenylmethylene)acetohydrazide chemical structure, C21H16Cl2N2O2, CAS 341967-94-0
2-(2,4-Dichlorophenoxy)-N'-(diphenylmethylene)acetohydrazide
CAS 341967-94-0C21H16Cl2N2O2
4-({[6-Chloro-2-(4-chlorophenyl)-1H-1,3-benzimidazol-1-yl]oxy}methyl)phenyl methyl ether chemical structure, C21H16Cl2N2O2, CAS 338978-92-0
4-({[6-Chloro-2-(4-chlorophenyl)-1H-1,3-benzimidazol-1-yl]oxy}methyl)phenyl methyl ether
CAS 338978-92-0C21H16Cl2N2O2
1-[(2,6-Dichlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole chemical structure, C21H16Cl2N2O2, CAS 339009-69-7
1-[(2,6-Dichlorobenzyl)oxy]-2-(4-methoxyphenyl)-1H-1,3-benzimidazole
CAS 339009-69-7C21H16Cl2N2O2
4-[(3,4-Dichlorobenzyl)oxy]-N'-[(E)-phenylmethylidene]benzenecarbohydrazide chemical structure, C21H16Cl2N2O2, CAS 320423-55-0
4-[(3,4-Dichlorobenzyl)oxy]-N'-[(E)-phenylmethylidene]benzenecarbohydrazide
CAS 320423-55-0C21H16Cl2N2O2
2,4-Dichloro-N-[4-[(4-methylbenzoyl)amino]phenyl]benzamide chemical structure, C21H16Cl2N2O2, CAS 418792-58-2
2,4-Dichloro-N-[4-[(4-methylbenzoyl)amino]phenyl]benzamide
CAS 418792-58-2C21H16Cl2N2O2
1-(2,4-Dichlorobenzyl)-3-(indoline-1-carbonyl)pyridin-2(1H)-one chemical structure, C21H16Cl2N2O2, CAS 941904-56-9
1-(2,4-Dichlorobenzyl)-3-(indoline-1-carbonyl)pyridin-2(1H)-one
CAS 941904-56-9C21H16Cl2N2O2
2-[(4-Chlorophenyl)methoxy]-N-[(4-chlorophenyl)methylideneamino]benzamide chemical structure, C21H16Cl2N2O2, CAS 6593-30-2
2-[(4-Chlorophenyl)methoxy]-N-[(4-chlorophenyl)methylideneamino]benzamide
CAS 6593-30-2C21H16Cl2N2O2
(2,4-Dichloro-3-phenylquinolin-6-yl)(3,5-dimethylisoxazol-4-yl)methanol chemical structure, C21H16Cl2N2O2, CAS 1600563-06-1
(2,4-Dichloro-3-phenylquinolin-6-yl)(3,5-dimethylisoxazol-4-yl)methanol
CAS 1600563-06-1C21H16Cl2N2O2
2,4-Dichloro-N-[4-[(3-methylphenyl)carbamoyl]phenyl]benzamide chemical structure, C21H16Cl2N2O2, CAS 709001-54-7
2,4-Dichloro-N-[4-[(3-methylphenyl)carbamoyl]phenyl]benzamide
CAS 709001-54-7C21H16Cl2N2O2
N'-{(E)-[3-(benzyloxy)phenyl]methylidene}-3,4-dichlorobenzohydrazide chemical structure, C21H16Cl2N2O2, CAS 344937-85-5
N'-{(E)-[3-(benzyloxy)phenyl]methylidene}-3,4-dichlorobenzohydrazide
CAS 344937-85-5C21H16Cl2N2O2
4,4'-Methylenebis[5-(4-chlorophenyl)-3-methyl-1,2-oxazole] chemical structure, C21H16Cl2N2O2, CAS 84198-60-7
4,4'-Methylenebis[5-(4-chlorophenyl)-3-methyl-1,2-oxazole]
CAS 84198-60-7C21H16Cl2N2O2

Frequently asked questions

What is the molar mass of C21H16Cl2N2O2?

The molar mass of C21H16Cl2N2O2 is 399.27 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 2 chlorine atoms, 2 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 398.0589 Da.

How many compounds have the formula C21H16Cl2N2O2?

CompoundList lists 25 compounds with the molecular formula C21H16Cl2N2O2, including N'-(2-Chlorobenzylidene)-4-((4-chlorobenzyl)oxy)benzohydrazide, 2-Chloro-N'-(3-((4-chlorobenzyl)oxy)benzylidene)benzohydrazide, 4-Chloro-N'-(4-((4-chlorobenzyl)oxy)benzylidene)benzohydrazide. 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 C21H16Cl2N2O2?

C21H16Cl2N2O2 has a degree of unsaturation of 14. 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.