C21H18N4
40 compounds have this formula on CompoundList.
- Molar mass
- 326.40g/mol
- Monoisotopic mass
- 326.1531Da
- Atoms
- 43
- Elements
- 3
- Rings plus double bonds
- 15
The formula C21H18N4 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms 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 × 2177.28%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 185.56%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 417.17%14.007 × 4 = 56.028 g/mol
Compounds with the formula C21H18N4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 40 of 40 compounds
![5,5-Dimethyl-3-quinolin-2-yl-6H-[1,2,4]triazolo[3,4-a]isoquinoline chemical structure, C21H18N4, CAS 332413-25-9](/s/JVNXINFPUCFCFH-UHFFFAOYSA-N.svg)
![1-(4-Ethylanilino)-3-methylpyrido[1,2-a]benzimidazole-4-carbonitrile chemical structure, C21H18N4, CAS 336178-06-4](/s/QZCYIIDYNRFSGD-UHFFFAOYSA-N.svg)
![3-Methyl-1-[(1-phenylethyl)amino]pyrido[1,2-a]benzimidazole-4-carbonitrile chemical structure, C21H18N4, CAS 611196-74-8](/s/LEHPBEXQJOWRLI-UHFFFAOYSA-N.svg)
![3-Methyl-1-(phenethylamino)benzo[4,5]imidazo[1,2-a]pyridine-4-carbonitrile chemical structure, C21H18N4, CAS 304861-65-2](/s/HUGBSTODQMRBPO-UHFFFAOYSA-N.svg)
![4-[2-(6-Methyl-pyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl]-quinoline chemical structure, C21H18N4, CAS 476475-13-5](/s/CQFMEEGANZACLR-UHFFFAOYSA-N.svg)
![1-(3,4-Dimethylanilino)-3-methylpyrido[1,2-a]benzimidazole-4-carbonitrile chemical structure, C21H18N4, CAS 305334-10-5](/s/RJEKOXXWDHFREW-UHFFFAOYSA-N.svg)
![1-(2,5-Dimethylanilino)-3-methylpyrido[1,2-a]benzimidazole-4-carbonitrile chemical structure, C21H18N4, CAS 305331-43-5](/s/PKNHMWLHEFCNJB-UHFFFAOYSA-N.svg)
![1-Anilino-2-ethyl-3-methylpyrido[1,2-a]benzimidazole-4-carbonitrile chemical structure, C21H18N4, CAS 305333-23-7](/s/ZUADKMCHGFIQCA-UHFFFAOYSA-N.svg)
![2,3-Bis(2-methylphenyl)pyrido[3,4-b]pyrazin-8-amine chemical structure, C21H18N4, CAS 30146-44-2](/s/HSOPJTWKHJIFFB-UHFFFAOYSA-N.svg)
![4-[4-(2,5-Dimethyl-1H-pyrrol-1-yl)phenyl]-2-(4-pyridinyl)pyrimidine chemical structure, C21H18N4, CAS 865658-64-6](/s/XJYNNCURQSDYAQ-UHFFFAOYSA-N.svg)
![6-Methyl-4-phenyl-N-[(pyridin-3-yl)methyl]quinazolin-2-amine chemical structure, C21H18N4, CAS 1018070-26-2](/s/HUWJMAWORWXJQT-UHFFFAOYSA-N.svg)
![4-[4-(2,5-Dimethyl-1H-pyrrol-1-yl)phenyl]-2-(2-pyridinyl)pyrimidine chemical structure, C21H18N4, CAS 865658-65-7](/s/RAQZSWRTVBLGRQ-UHFFFAOYSA-N.svg)
![4'-{(E)-[4-(Ethylamino)phenyl]diazenyl}biphenyl-4-carbonitrile chemical structure, C21H18N4, CAS 728932-14-7](/s/WSWCWQDZXLMYIQ-UHFFFAOYSA-N.svg)
![2-(1-(5-Ethyl-7-methyl-1H-indol-4-yl)vinyl)-1H-benzo[d]imidazole-5-carbonitrile chemical structure, C21H18N4, CAS 1481637-15-3](/s/YFRDQYUJRRSHLD-UHFFFAOYSA-N.svg)
- 1,1'-(9,9-Dimethyl-9H-fluorene-2,7-diyl)bis(1H-imidazole)1588929-66-1C21H18N4
- Pyrazinamine, 5-(2-naphthalenyl)-N-[2-(4-pyridinyl)ethyl]-821783-89-5C21H18N4
- Pyrazinamine, 5-(2-naphthalenyl)-N-[2-(3-pyridinyl)ethyl]-821784-04-7C21H18N4
- 2-[4-(Phenylethynyl)phenyl]-2-[(1H-1,2,4-triazol-1-yl)methyl]butanenitrile123654-54-6C21H18N4
- 2-(6-(1H-Pyrrolo[2,3-b]pyridin-4-yl)pyridin-2-yl)-1,2,3,4-tetrahydroisoquinoline916172-38-8C21H18N4
- 2,3-Phenazinediamine, N-(1-phenylpropylidene)-62314-53-8C21H18N4
- Pyridine, 4-[2-(4,5-diphenyl-1H-1,2,3-triazol-1-yl)ethyl]-117377-85-2C21H18N4
- N-(3-(3-Pyridyl)phenyl)-2-amino-4-(1-pyrrolyl)aniline184174-05-8C21H18N4
- N-(3-(2-Pyridyl)phenyl)-2-amino-4-(1-pyrrolyl)aniline184174-09-2C21H18N4
- N-Benzyl-7-(2-methylpyridin-4-yl)quinazolin-4-amine1384181-58-1C21H18N4
- N-[6-(4-Ethylphenyl)-4-pyrimidinyl]-5-isoquinolinamine697740-25-3C21H18N4
- 3-Benzyl-4-phenyl-1-(pyridin-3-yl)-1H-pyrazol-5-amine19541-74-3C21H18N4
- 1-(Triphenylmethyl)-1H-1,2,3-triazol-4-amine146984-24-9C21H18N4
- {4-[Ethyl(2-phenylethyl)amino]phenyl}ethene-1,1,2-tricarbonitrile97460-97-4C21H18N4
- 4,4'-(1-Phenyl-1H-pyrazole-3,5-diyl)dianiline138556-28-2C21H18N4
- 4,4'-(3-Phenyl-1H-pyrazole-1,5-diyl)dianiline138737-84-5C21H18N4
Frequently asked questions
What is the molar mass of C21H18N4?
The molar mass of C21H18N4 is 326.40 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms and 4 nitrogen atoms. The monoisotopic mass is 326.1531 Da.
How many compounds have the formula C21H18N4?
CompoundList lists 40 compounds with the molecular formula C21H18N4, including 5,5-Dimethyl-3-quinolin-2-yl-6H-[1,2,4]triazolo[3,4-a]isoquinoline, 4-N-Benzyl-2-N-phenylquinazoline-2,4-diamine, N-(2,5-Dimethylphenyl)-2-pyridin-4-ylquinazolin-4-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 C21H18N4?
C21H18N4 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.