C5H5N
18 compounds have this formula on CompoundList.
- Molar mass
- 79.10g/mol
- Monoisotopic mass
- 84.0736Da
- Atoms
- 11
- Elements
- 3
- Rings plus double bonds
- 4
The formula C5H5N describes a molecule made of 5 carbon atoms, 5 hydrogen atoms and 1 nitrogen 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 × 575.92%12.011 × 5 = 60.055 g/mol
- H Hydrogen × 56.37%1.008 × 5 = 5.040 g/mol
- N Nitrogen × 117.71%14.007 × 1 = 14.007 g/mol
Compounds with the formula C5H5N
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 18 of 18 compounds
![Bicyclo[1.1.0]butane-1-carbonitrile chemical structure, C5H5N, CAS 16955-35-4](/s/BPPMXXJOMACYJD-UHFFFAOYSA-N.svg)
![2-Azabicyclo[2.2.0]hexa-2,5-diene chemical structure, C5H5N, CAS 6566-96-7](/s/UKZSOLAUQNXPLD-UHFFFAOYSA-N.svg)
Frequently asked questions
What is the molar mass of C5H5N?
The molar mass of C5H5N is 79.10 g/mol, calculated from standard atomic weights for 5 carbon atoms, 5 hydrogen atoms and 1 nitrogen atom. The monoisotopic mass is 84.0736 Da.
How many compounds have the formula C5H5N?
CompoundList lists 18 compounds with the molecular formula C5H5N, including Pyridine, Pyridine-D5, 4-Cyano-1-butyne. 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 C5H5N?
C5H5N has a degree of unsaturation of 4. 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.