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Molecular formula

C18H21ClN4

19 compounds have this formula on CompoundList.

Molar mass
328.84g/mol
Monoisotopic mass
328.1455Da
Atoms
44
Elements
4
Rings plus double bonds
10

The formula C18H21ClN4 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 chlorine atom and 4 nitrogen 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 × 1865.74%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 216.44%
    1.008 × 21 = 21.168 g/mol
  • Cl Chlorine × 110.78%
    35.45 × 1 = 35.450 g/mol
  • N Nitrogen × 417.04%
    14.007 × 4 = 56.028 g/mol
Look up another formula

Compounds with the formula C18H21ClN4

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

Showing 1 to 19 of 19 compounds

2-N-Carboxamidinonormianserin chemical structure, C18H21ClN4, CAS 139995-66-7
2-N-Carboxamidinonormianserin
CAS 139995-66-7C18H21ClN4
Midamaline chemical structure, C18H21ClN4, CAS 496-38-8
Midamaline
CAS 496-38-8C18H21ClN4
N-(Butan-2-yl)-3-(4-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 850722-29-1
N-(Butan-2-yl)-3-(4-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 850722-29-1C18H21ClN4
N-(Butan-2-yl)-3-(2-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 890634-03-4
N-(Butan-2-yl)-3-(2-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 890634-03-4C18H21ClN4
3-(2-Chlorophenyl)-2,5-dimethyl-N-(2-methylpropyl)pyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 890634-54-5
3-(2-Chlorophenyl)-2,5-dimethyl-N-(2-methylpropyl)pyrazolo[1,5-a]pyrimidin-7-amine
CAS 890634-54-5C18H21ClN4
3-(4-Chlorophenyl)-2,5-dimethyl-N-(2-methylpropyl)pyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 850901-59-6
3-(4-Chlorophenyl)-2,5-dimethyl-N-(2-methylpropyl)pyrazolo[1,5-a]pyrimidin-7-amine
CAS 850901-59-6C18H21ClN4
N-Butyl-3-(4-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 877796-35-5
N-Butyl-3-(4-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 877796-35-5C18H21ClN4
2-(3-Chlorophenyl)-N-isobutyl-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 1203378-53-3
2-(3-Chlorophenyl)-N-isobutyl-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 1203378-53-3C18H21ClN4
N-(Butan-2-yl)-2-(4-chlorophenyl)-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 1203050-59-2
N-(Butan-2-yl)-2-(4-chlorophenyl)-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 1203050-59-2C18H21ClN4
N-Butyl-3-(2-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 890633-10-0
N-Butyl-3-(2-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 890633-10-0C18H21ClN4
N-(Butan-2-yl)-2-(3-chlorophenyl)-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 1203326-31-1
N-(Butan-2-yl)-2-(3-chlorophenyl)-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 1203326-31-1C18H21ClN4
N-Butyl-2-(4-chlorophenyl)-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 1203417-08-6
N-Butyl-2-(4-chlorophenyl)-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 1203417-08-6C18H21ClN4
2-(4-Chlorophenyl)-3,5-dimethyl-N-(2-methylpropyl)pyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 1203086-17-2
2-(4-Chlorophenyl)-3,5-dimethyl-N-(2-methylpropyl)pyrazolo[1,5-a]pyrimidin-7-amine
CAS 1203086-17-2C18H21ClN4
N-Butyl-2-(3-chlorophenyl)-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C18H21ClN4, CAS 1203110-14-8
N-Butyl-2-(3-chlorophenyl)-3,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine
CAS 1203110-14-8C18H21ClN4
3-(4-(2-Chlorobenzyl)piperazin-1-yl)-6-cyclopropylpyridazine chemical structure, C18H21ClN4, CAS 2034427-96-6
3-(4-(2-Chlorobenzyl)piperazin-1-yl)-6-cyclopropylpyridazine
CAS 2034427-96-6C18H21ClN4
Pyrazino(1,2-a)(1,4)benzodiazepine, 1,2,3,4,4a,5-hexahydro-9-chloro-3-methyl-7-(1-methyl-1H-pyrrol-2-yl)- chemical structure, C18H21ClN4, CAS 87566-38-9
Pyrazino(1,2-a)(1,4)benzodiazepine, 1,2,3,4,4a,5-hexahydro-9-chloro-3-methyl-7-(1-methyl-1H-pyrrol-2-yl)-
CAS 87566-38-9C18H21ClN4
5-[2-[1-(4-Chlorophenyl)cyclopentyl]ethenyl]-6-methyl-2,4-pyrimidinediamine chemical structure, C18H21ClN4, CAS 189810-00-2
5-[2-[1-(4-Chlorophenyl)cyclopentyl]ethenyl]-6-methyl-2,4-pyrimidinediamine
CAS 189810-00-2C18H21ClN4
6-Chloro-2-(3-{octahydrocyclopenta[c]pyrrol-2-yl}azetidin-1-yl)quinoxaline chemical structure, C18H21ClN4, CAS 2548997-92-6
6-Chloro-2-(3-{octahydrocyclopenta[c]pyrrol-2-yl}azetidin-1-yl)quinoxaline
CAS 2548997-92-6C18H21ClN4
4-{5-[(4-Chlorophenyl)methyl]-octahydropyrrolo[3,4-c]pyrrol-2-yl}-6-methylpyrimidine chemical structure, C18H21ClN4, CAS 2741920-89-6
4-{5-[(4-Chlorophenyl)methyl]-octahydropyrrolo[3,4-c]pyrrol-2-yl}-6-methylpyrimidine
CAS 2741920-89-6C18H21ClN4

Frequently asked questions

What is the molar mass of C18H21ClN4?

The molar mass of C18H21ClN4 is 328.84 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 chlorine atom and 4 nitrogen atoms. The monoisotopic mass is 328.1455 Da.

How many compounds have the formula C18H21ClN4?

CompoundList lists 19 compounds with the molecular formula C18H21ClN4, including 2-N-Carboxamidinonormianserin, Midamaline, N-(Butan-2-yl)-3-(4-chlorophenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine. 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 C18H21ClN4?

C18H21ClN4 has a degree of unsaturation of 10. 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.