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Molecular formula

C21H18ClN5O3

43 compounds have this formula on CompoundList.

Molar mass
423.86g/mol
Monoisotopic mass
423.1098Da
Atoms
48
Elements
5
Rings plus double bonds
15

The formula C21H18ClN5O3 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 1 chlorine atom, 5 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 × 2159.51%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 184.28%
    1.008 × 18 = 18.144 g/mol
  • Cl Chlorine × 18.36%
    35.45 × 1 = 35.450 g/mol
  • N Nitrogen × 516.52%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 311.32%
    15.999 × 3 = 47.997 g/mol
Look up another formula

Compounds with the formula C21H18ClN5O3

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

Showing 1 to 43 of 43 compounds

N-(4-Chlorobenzyl)-2-[2-(4-methoxyphenyl)-4-oxopyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl]acetamide chemical structure, C21H18ClN5O3, CAS 891527-59-6
N-(4-Chlorobenzyl)-2-[2-(4-methoxyphenyl)-4-oxopyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl]acetamide
CAS 891527-59-6C21H18ClN5O3
N-(2-{[3-(2-Chlorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]oxy}ethyl)-3-methoxybenzamide chemical structure, C21H18ClN5O3, CAS 1021224-19-0
N-(2-{[3-(2-Chlorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]oxy}ethyl)-3-methoxybenzamide
CAS 1021224-19-0C21H18ClN5O3
2-Chloro-N-(2-{[3-(2-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]oxy}ethyl)benzamide chemical structure, C21H18ClN5O3, CAS 1040662-59-6
2-Chloro-N-(2-{[3-(2-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]oxy}ethyl)benzamide
CAS 1040662-59-6C21H18ClN5O3
2-Chloro-N-(2-((3-(4-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)benzamide chemical structure, C21H18ClN5O3, CAS 1021125-17-6
2-Chloro-N-(2-((3-(4-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)benzamide
CAS 1021125-17-6C21H18ClN5O3
2-(4-Chlorophenoxy)-N-[2-({3-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)ethyl]acetamide chemical structure, C21H18ClN5O3, CAS 946272-62-4
2-(4-Chlorophenoxy)-N-[2-({3-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}oxy)ethyl]acetamide
CAS 946272-62-4C21H18ClN5O3
2-(1-(3-Chlorophenyl)-4-cyclopropyl-7-oxo-1H-pyrazolo[3,4-d]pyridazin-6(7H)-yl)-N-(furan-2-ylmethyl)acetamide chemical structure, C21H18ClN5O3, CAS 1105200-10-9
2-(1-(3-Chlorophenyl)-4-cyclopropyl-7-oxo-1H-pyrazolo[3,4-d]pyridazin-6(7H)-yl)-N-(furan-2-ylmethyl)acetamide
CAS 1105200-10-9C21H18ClN5O3
3-Chloro-N-(2-((3-(4-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)benzamide chemical structure, C21H18ClN5O3, CAS 1021030-88-5
3-Chloro-N-(2-((3-(4-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)benzamide
CAS 1021030-88-5C21H18ClN5O3
3-(4-Chlorobenzyl)-8-(furan-2-ylmethyl)-1,7-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione chemical structure, C21H18ClN5O3, CAS 896852-89-4
3-(4-Chlorobenzyl)-8-(furan-2-ylmethyl)-1,7-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione
CAS 896852-89-4C21H18ClN5O3
3-(2-Chlorobenzyl)-8-(furan-2-ylmethyl)-1,7-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione chemical structure, C21H18ClN5O3, CAS 899389-22-1
3-(2-Chlorobenzyl)-8-(furan-2-ylmethyl)-1,7-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione
CAS 899389-22-1C21H18ClN5O3
(1-(3-(4-Chlorophenyl)benzo[c]isoxazol-5-yl)-5-methyl-1H-1,2,3-triazol-4-yl)(morpholino)methanone chemical structure, C21H18ClN5O3, CAS 950357-65-0
(1-(3-(4-Chlorophenyl)benzo[c]isoxazol-5-yl)-5-methyl-1H-1,2,3-triazol-4-yl)(morpholino)methanone
CAS 950357-65-0C21H18ClN5O3
3-(3-Chlorobenzyl)-8-(furan-2-ylmethyl)-1,7-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione chemical structure, C21H18ClN5O3, CAS 896822-54-1
3-(3-Chlorobenzyl)-8-(furan-2-ylmethyl)-1,7-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione
CAS 896822-54-1C21H18ClN5O3
N-(5-Chloro-2-methylphenyl)-2-{4-[5-(4-methoxyphenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}acetamide chemical structure, C21H18ClN5O3, CAS 1251671-05-2
N-(5-Chloro-2-methylphenyl)-2-{4-[5-(4-methoxyphenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}acetamide
CAS 1251671-05-2C21H18ClN5O3
N-(5-Chloro-2-methoxyphenyl)-3-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)propanamide chemical structure, C21H18ClN5O3, CAS 946234-94-2
N-(5-Chloro-2-methoxyphenyl)-3-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)propanamide
CAS 946234-94-2C21H18ClN5O3
2-{5-[(4-Chlorophenoxy)methyl]furan-2-yl}-5-{[3-(1H-imidazol-1-yl)propyl]amino}-1,3-oxazole-4-carbonitrile chemical structure, C21H18ClN5O3, CAS 931748-93-5
2-{5-[(4-Chlorophenoxy)methyl]furan-2-yl}-5-{[3-(1H-imidazol-1-yl)propyl]amino}-1,3-oxazole-4-carbonitrile
CAS 931748-93-5C21H18ClN5O3
N-(5-Chloro-2-methylphenyl)-2-[8-(2-methylphenoxy)-3-oxo[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl]acetamide chemical structure, C21H18ClN5O3, CAS 1251612-74-4
N-(5-Chloro-2-methylphenyl)-2-[8-(2-methylphenoxy)-3-oxo[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl]acetamide
CAS 1251612-74-4C21H18ClN5O3
3-Chloro-N-(3-(furan-2-yl)-1-(4-isopropyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)benzamide chemical structure, C21H18ClN5O3, CAS 1206995-56-3
3-Chloro-N-(3-(furan-2-yl)-1-(4-isopropyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)benzamide
CAS 1206995-56-3C21H18ClN5O3
2-[1-(3-Chlorophenyl)-4-oxo-1H,4H,5H-pyrazolo[3,4-d]pyrimidin-5-yl]-N-(2-ethoxyphenyl)acetamide chemical structure, C21H18ClN5O3, CAS 895016-02-1
2-[1-(3-Chlorophenyl)-4-oxo-1H,4H,5H-pyrazolo[3,4-d]pyrimidin-5-yl]-N-(2-ethoxyphenyl)acetamide
CAS 895016-02-1C21H18ClN5O3
N-(2-Chloro-4-methylphenyl)-2-(3-oxo-8-(p-tolyloxy)-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide chemical structure, C21H18ClN5O3, CAS 1251628-89-3
N-(2-Chloro-4-methylphenyl)-2-(3-oxo-8-(p-tolyloxy)-[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl)acetamide
CAS 1251628-89-3C21H18ClN5O3
N-(2-Chloro-4-methylphenyl)-2-[8-(2-methylphenoxy)-3-oxo[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl]acetamide chemical structure, C21H18ClN5O3, CAS 1251629-42-1
N-(2-Chloro-4-methylphenyl)-2-[8-(2-methylphenoxy)-3-oxo[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl]acetamide
CAS 1251629-42-1C21H18ClN5O3
N-(3-Chlorophenyl)-2-[8-(3,5-dimethylphenoxy)-3-oxo[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl]acetamide chemical structure, C21H18ClN5O3, CAS 1251678-82-6
N-(3-Chlorophenyl)-2-[8-(3,5-dimethylphenoxy)-3-oxo[1,2,4]triazolo[4,3-a]pyrazin-2(3H)-yl]acetamide
CAS 1251678-82-6C21H18ClN5O3
N-(3-Chloro-4-methylphenyl)-2-{4-[5-(4-methoxyphenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}acetamide chemical structure, C21H18ClN5O3, CAS 1251626-03-5
N-(3-Chloro-4-methylphenyl)-2-{4-[5-(4-methoxyphenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}acetamide
CAS 1251626-03-5C21H18ClN5O3
5-Chloro-N-(1-(3,4-dimethylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-methoxybenzamide chemical structure, C21H18ClN5O3, CAS 899738-30-8
5-Chloro-N-(1-(3,4-dimethylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-methoxybenzamide
CAS 899738-30-8C21H18ClN5O3
2-(4-Chlorophenoxy)-2-methyl-N-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)propanamide chemical structure, C21H18ClN5O3, CAS 899752-71-7
2-(4-Chlorophenoxy)-2-methyl-N-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)propanamide
CAS 899752-71-7C21H18ClN5O3
N-(1-(3-Chlorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-3-(4-methoxyphenyl)propanamide chemical structure, C21H18ClN5O3, CAS 899737-69-0
N-(1-(3-Chlorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-3-(4-methoxyphenyl)propanamide
CAS 899737-69-0C21H18ClN5O3

Frequently asked questions

What is the molar mass of C21H18ClN5O3?

The molar mass of C21H18ClN5O3 is 423.86 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 1 chlorine atom, 5 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 423.1098 Da.

How many compounds have the formula C21H18ClN5O3?

CompoundList lists 43 compounds with the molecular formula C21H18ClN5O3, including N-(4-Chlorobenzyl)-2-[2-(4-methoxyphenyl)-4-oxopyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl]acetamide, N-(2-{[3-(2-Chlorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]oxy}ethyl)-3-methoxybenzamide, 2-Chloro-N-(2-{[3-(2-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]oxy}ethyl)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 C21H18ClN5O3?

C21H18ClN5O3 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.