C8H5NO
32 compounds have this formula on CompoundList.
- Molar mass
- 131.13g/mol
- Monoisotopic mass
- 131.0371Da
- Atoms
- 15
- Elements
- 4
- Rings plus double bonds
- 7
The formula C8H5NO describes a molecule made of 8 carbon atoms, 5 hydrogen atoms, 1 nitrogen atom and 1 oxygen 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 × 873.27%12.011 × 8 = 96.088 g/mol
- H Hydrogen × 53.84%1.008 × 5 = 5.040 g/mol
- N Nitrogen × 110.68%14.007 × 1 = 14.007 g/mol
- O Oxygen × 112.20%15.999 × 1 = 15.999 g/mol
Compounds with the formula C8H5NO
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 32 of 32 compounds
![2,4-Methanofuro[2,3-C]pyridine chemical structure, C8H5NO, CAS 99573-90-7](/s/FBQCSOQOMAVFCE-UHFFFAOYSA-N.svg)
![[1,3]Oxazolo[2,3,4-cd]pyrrolizine chemical structure, C8H5NO, CAS 163831-74-1](/s/LZTYWZJXZFXWLL-UHFFFAOYSA-N.svg)
![Azireno[2,1-b][1,3]benzoxazole chemical structure, C8H5NO, CAS 142135-15-7](/s/ZHTLPCNCLCZPJM-UHFFFAOYSA-N.svg)
- (Nitrosoethynyl)benzene19699-11-7C8H5NO
- 2,7-Methanofuro[3,4-b]pyridine299181-31-0C8H5NO
- Azeto[1,2-a]furo[2,3-c]pyrrole225786-85-6C8H5NO
- 2,6-Methanopyrano[3,2-b]pyrrole143622-29-1C8H5NO
- Oxireno[a]indolizine157212-84-5C8H5NO
- 5-Oxocyclohepta-1,3,6-triene-1-carbonitrile34712-07-7C8H5NO
- 2-Ethynylnicotinaldehyde1211522-97-2C8H5NO
- 7-Azabicyclo[4.2.0]octa-1(6),2,4,7-tetraene-8-carbaldehyde2055940-26-4C8H5NO
Frequently asked questions
What is the molar mass of C8H5NO?
The molar mass of C8H5NO is 131.13 g/mol, calculated from standard atomic weights for 8 carbon atoms, 5 hydrogen atoms, 1 nitrogen atom and 1 oxygen atom. The monoisotopic mass is 131.0371 Da.
How many compounds have the formula C8H5NO?
CompoundList lists 32 compounds with the molecular formula C8H5NO, including 4-Cyanobenzaldehyde, Phenylglyoxylonitrile, m-Formylbenzonitrile. 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 C8H5NO?
C8H5NO has a degree of unsaturation of 7. 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.