C18H21N5
104 compounds have this formula on CompoundList.
- Molar mass
- 307.40g/mol
- Monoisotopic mass
- 307.1797Da
- Atoms
- 44
- Elements
- 3
- Rings plus double bonds
- 11
The formula C18H21N5 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms and 5 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 × 1870.33%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.89%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 522.78%14.007 × 5 = 70.035 g/mol
Compounds with the formula C18H21N5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 104 of 104 compounds
![3-({3-[Methyl(pyrimidin-4-yl)amino]piperidin-1-yl}methyl)benzonitrile chemical structure, C18H21N5, CAS 3054579-24-4](/s/FJNNNUPMJNMGMJ-UHFFFAOYSA-N.svg)
![N-{1-[(1H-indol-5-yl)methyl]pyrrolidin-3-yl}-N-methylpyrimidin-2-amine chemical structure, C18H21N5, CAS 3054615-55-0](/s/ZEIFGAFSLBXWFB-UHFFFAOYSA-N.svg)
![4-{3-[Methyl(4-methylpyrimidin-2-yl)amino]piperidin-1-yl}benzonitrile chemical structure, C18H21N5, CAS 3054436-60-8](/s/FLDFCUZDUHCCSN-UHFFFAOYSA-N.svg)
![4-{3-[Methyl(6-methylpyrimidin-4-yl)amino]piperidin-1-yl}benzonitrile chemical structure, C18H21N5, CAS 3054579-99-3](/s/IUYOYTWCAQJUKE-UHFFFAOYSA-N.svg)
Frequently asked questions
What is the molar mass of C18H21N5?
The molar mass of C18H21N5 is 307.40 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms and 5 nitrogen atoms. The monoisotopic mass is 307.1797 Da.
How many compounds have the formula C18H21N5?
CompoundList lists 104 compounds with the molecular formula C18H21N5, including 3-({3-[Methyl(pyrimidin-4-yl)amino]piperidin-1-yl}methyl)benzonitrile, N-{1-[(1H-indol-5-yl)methyl]pyrrolidin-3-yl}-N-methylpyrimidin-2-amine, 4-{3-[Methyl(4-methylpyrimidin-2-yl)amino]piperidin-1-yl}benzonitrile. 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 C18H21N5?
C18H21N5 has a degree of unsaturation of 11. 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.