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Molecular formula

C21H16ClN3O4S

19 compounds have this formula on CompoundList.

Molar mass
441.89g/mol
Monoisotopic mass
441.0550Da
Atoms
46
Elements
6
Rings plus double bonds
15

The formula C21H16ClN3O4S describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 1 chlorine atom, 3 nitrogen atoms, 4 oxygen atoms and 1 sulfur 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 × 2157.08%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 163.65%
    1.008 × 16 = 16.128 g/mol
  • Cl Chlorine × 18.02%
    35.45 × 1 = 35.450 g/mol
  • N Nitrogen × 39.51%
    14.007 × 3 = 42.021 g/mol
  • O Oxygen × 414.48%
    15.999 × 4 = 63.996 g/mol
  • S Sulfur × 17.26%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C21H16ClN3O4S

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

Showing 1 to 19 of 19 compounds

5-({2-[(2-Chloro-1,3-thiazol-5-yl)methoxy]-1-naphthyl}methylene)-1,3-dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione chemical structure, C21H16ClN3O4S, CAS 478079-04-8
5-({2-[(2-Chloro-1,3-thiazol-5-yl)methoxy]-1-naphthyl}methylene)-1,3-dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione
CAS 478079-04-8C21H16ClN3O4S
2-Chloro-5-nitro-N-(1-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroquinolin-7-yl)benzamide chemical structure, C21H16ClN3O4S, CAS 941986-89-6
2-Chloro-5-nitro-N-(1-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroquinolin-7-yl)benzamide
CAS 941986-89-6C21H16ClN3O4S
4-{(E)-[2-(4-Chlorophenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]methyl}-2-ethoxyphenyl acetate chemical structure, C21H16ClN3O4S, CAS 373375-24-7
4-{(E)-[2-(4-Chlorophenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]methyl}-2-ethoxyphenyl acetate
CAS 373375-24-7C21H16ClN3O4S
(2Z)-6-(2-Chlorobenzyl)-2-(2,3-dimethoxybenzylidene)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione chemical structure, C21H16ClN3O4S, CAS 638134-67-5
(2Z)-6-(2-Chlorobenzyl)-2-(2,3-dimethoxybenzylidene)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione
CAS 638134-67-5C21H16ClN3O4S
(2Z)-6-(2-Chlorobenzyl)-2-(2,5-dimethoxybenzylidene)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione chemical structure, C21H16ClN3O4S, CAS 638134-71-1
(2Z)-6-(2-Chlorobenzyl)-2-(2,5-dimethoxybenzylidene)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione
CAS 638134-71-1C21H16ClN3O4S
(2Z)-2-(4-Chlorobenzylidene)-6-(3,4-dimethoxybenzyl)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione chemical structure, C21H16ClN3O4S, CAS 636987-79-6
(2Z)-2-(4-Chlorobenzylidene)-6-(3,4-dimethoxybenzyl)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione
CAS 636987-79-6C21H16ClN3O4S
(2Z)-2-(3-Chlorobenzylidene)-6-(3,4-dimethoxybenzyl)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione chemical structure, C21H16ClN3O4S, CAS 638133-53-6
(2Z)-2-(3-Chlorobenzylidene)-6-(3,4-dimethoxybenzyl)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione
CAS 638133-53-6C21H16ClN3O4S
2-[(2-Chlorophenyl)(1,1-dioxido-1,2-benzothiazol-3-yl)amino]ethyl pyridine-4-carboxylate chemical structure, C21H16ClN3O4S, CAS 591213-05-7
2-[(2-Chlorophenyl)(1,1-dioxido-1,2-benzothiazol-3-yl)amino]ethyl pyridine-4-carboxylate
CAS 591213-05-7C21H16ClN3O4S
(4E)-4-[(5-Chloro-2-methoxyphenyl)(hydroxy)methylidene]-1-(5-methyl-1,3,4-thiadiazol-2-yl)-5-phenylpyrrolidine-2,3-dione chemical structure, C21H16ClN3O4S, CAS 951950-00-8
(4E)-4-[(5-Chloro-2-methoxyphenyl)(hydroxy)methylidene]-1-(5-methyl-1,3,4-thiadiazol-2-yl)-5-phenylpyrrolidine-2,3-dione
CAS 951950-00-8C21H16ClN3O4S
(2Z)-6-(2-Chlorobenzyl)-2-(3,4-dimethoxybenzylidene)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione chemical structure, C21H16ClN3O4S, CAS 638134-54-0
(2Z)-6-(2-Chlorobenzyl)-2-(3,4-dimethoxybenzylidene)-7H-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7(2H)-dione
CAS 638134-54-0C21H16ClN3O4S
(Z)-2-[4-(1,3-Benzodioxol-5-yl)-1,3-thiazol-2-yl]-3-(4-chloro-2,5-dimethoxyanilino)prop-2-enenitrile chemical structure, C21H16ClN3O4S, CAS 330209-11-5
(Z)-2-[4-(1,3-Benzodioxol-5-yl)-1,3-thiazol-2-yl]-3-(4-chloro-2,5-dimethoxyanilino)prop-2-enenitrile
CAS 330209-11-5C21H16ClN3O4S
3-(4-Chlorophenyl)-5,6-dimethyl-1-(3-nitrobenzyl)thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione chemical structure, C21H16ClN3O4S, CAS 687580-74-1
3-(4-Chlorophenyl)-5,6-dimethyl-1-(3-nitrobenzyl)thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione
CAS 687580-74-1C21H16ClN3O4S
4-{(Z)-[2-(3-Chlorophenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]methyl}-2-ethoxyphenyl acetate chemical structure, C21H16ClN3O4S, CAS 573947-37-2
4-{(Z)-[2-(3-Chlorophenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]methyl}-2-ethoxyphenyl acetate
CAS 573947-37-2C21H16ClN3O4S
2-Chloro-4-nitro-N-[1-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroquinolin-6-yl]benzamide chemical structure, C21H16ClN3O4S, CAS 897620-39-2
2-Chloro-4-nitro-N-[1-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroquinolin-6-yl]benzamide
CAS 897620-39-2C21H16ClN3O4S
3-(4-Chlorophenyl)-5,6-dimethyl-1-(4-nitrobenzyl)thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione chemical structure, C21H16ClN3O4S, CAS 687580-87-6
3-(4-Chlorophenyl)-5,6-dimethyl-1-(4-nitrobenzyl)thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione
CAS 687580-87-6C21H16ClN3O4S
6-Chloro-5-(4-methoxyphenyl)-N-(phenylsulfonyl)-1H-indazole-3-carboxamide chemical structure, C21H16ClN3O4S, CAS 1467059-16-0
6-Chloro-5-(4-methoxyphenyl)-N-(phenylsulfonyl)-1H-indazole-3-carboxamide
CAS 1467059-16-0C21H16ClN3O4S
Cdk2-IN-9 chemical structure, C21H16ClN3O4S, CAS 2919216-33-2
Cdk2-IN-9
CAS 2919216-33-2C21H16ClN3O4S
N-[(4-Chloro-2-nitrophenyl)carbamothioyl]-4-phenylmethoxybenzamide chemical structure, C21H16ClN3O4S, CAS 767316-61-0
N-[(4-Chloro-2-nitrophenyl)carbamothioyl]-4-phenylmethoxybenzamide
CAS 767316-61-0C21H16ClN3O4S
3-(1H-Benzimidazol-2-yl)-5-chloro-N-(4-methoxyphenyl)sulfonylbenzamide chemical structure, C21H16ClN3O4S, CAS 3102011-46-8
3-(1H-Benzimidazol-2-yl)-5-chloro-N-(4-methoxyphenyl)sulfonylbenzamide
CAS 3102011-46-8C21H16ClN3O4S

Frequently asked questions

What is the molar mass of C21H16ClN3O4S?

The molar mass of C21H16ClN3O4S is 441.89 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 1 chlorine atom, 3 nitrogen atoms, 4 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 441.0550 Da.

How many compounds have the formula C21H16ClN3O4S?

CompoundList lists 19 compounds with the molecular formula C21H16ClN3O4S, including 5-({2-[(2-Chloro-1,3-thiazol-5-yl)methoxy]-1-naphthyl}methylene)-1,3-dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione, 2-Chloro-5-nitro-N-(1-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroquinolin-7-yl)benzamide, 4-{(E)-[2-(4-Chlorophenyl)-6-oxo[1,3]thiazolo[3,2-b][1,2,4]triazol-5(6H)-ylidene]methyl}-2-ethoxyphenyl acetate. 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 C21H16ClN3O4S?

C21H16ClN3O4S has a degree of unsaturation of 15. 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.