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Molecular formula

C4H5N5O

13 compounds have this formula on CompoundList.

Molar mass
139.12g/mol
Monoisotopic mass
139.0494Da
Atoms
15
Elements
4
Rings plus double bonds
5

The formula C4H5N5O describes a molecule made of 4 carbon atoms, 5 hydrogen atoms, 5 nitrogen atoms 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 × 434.53%
    12.011 × 4 = 48.044 g/mol
  • H Hydrogen × 53.62%
    1.008 × 5 = 5.040 g/mol
  • N Nitrogen × 550.34%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 111.50%
    15.999 × 1 = 15.999 g/mol
Look up another formula

Compounds with the formula C4H5N5O

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

Showing 1 to 13 of 13 compounds

5-Nitroso-4,6-pyrimidinediamine chemical structure, C4H5N5O, CAS 61908-15-4
5-Nitroso-4,6-pyrimidinediamine
CAS 61908-15-4C4H5N5O
2,6-Diamino-5-iminopyrimidin-4-one chemical structure, C4H5N5O, CAS 72091-25-9
2,6-Diamino-5-iminopyrimidin-4-one
CAS 72091-25-9C4H5N5O
5-Diazenyl-1H-imidazole-4-carboxamide chemical structure, C4H5N5O, CAS 1314929-56-0
5-Diazenyl-1H-imidazole-4-carboxamide
CAS 1314929-56-0C4H5N5O
2-(Azidomethyl)-5-methyl-1,3,4-oxadiazole chemical structure, C4H5N5O, CAS 1000686-15-6
2-(Azidomethyl)-5-methyl-1,3,4-oxadiazole
CAS 1000686-15-6C4H5N5O
6-Amino-1,2,4-triazine-5-carboxamide chemical structure, C4H5N5O, CAS 19359-67-2
6-Amino-1,2,4-triazine-5-carboxamide
CAS 19359-67-2C4H5N5O
6,7-Dihydro-1H-[1,2,3]triazolo[4,5-d]pyrimidin-5(4H)-one chemical structure, C4H5N5O, CAS 36183-70-7
6,7-Dihydro-1H-[1,2,3]triazolo[4,5-d]pyrimidin-5(4H)-one
CAS 36183-70-7C4H5N5O
1,2,4-Triazine-3-carbohydrazide chemical structure, C4H5N5O, CAS 89033-53-4
1,2,4-Triazine-3-carbohydrazide
CAS 89033-53-4C4H5N5O
5-(1-Isocyanatoethyl)-1H-1,2,3,4-tetrazole chemical structure, C4H5N5O, CAS 1341900-37-5
5-(1-Isocyanatoethyl)-1H-1,2,3,4-tetrazole
CAS 1341900-37-5C4H5N5O
1-(2-Isocyanatoethyl)-1H-1,2,3,4-tetrazole chemical structure, C4H5N5O, CAS 2649076-77-5
1-(2-Isocyanatoethyl)-1H-1,2,3,4-tetrazole
CAS 2649076-77-5C4H5N5O
N'-(1,2-Dihydro-1,2,4-triazin-3-yl)-N-oxomethanimidamide chemical structure, C4H5N5O, CAS 61139-95-5
N'-(1,2-Dihydro-1,2,4-triazin-3-yl)-N-oxomethanimidamide
CAS 61139-95-5C4H5N5O
3-Hydroxy-3-(1H-1,2,3,4-tetrazol-5-yl)propanenitrile chemical structure, C4H5N5O, CAS 2229332-44-7
3-Hydroxy-3-(1H-1,2,3,4-tetrazol-5-yl)propanenitrile
CAS 2229332-44-7C4H5N5O
5-(2-Isocyanatoethyl)-1H-1,2,3,4-tetrazole chemical structure, C4H5N5O, CAS 2649075-63-6
5-(2-Isocyanatoethyl)-1H-1,2,3,4-tetrazole
CAS 2649075-63-6C4H5N5O
5-Nitrosopyrimidine-2,4-diamine chemical structure, C4H5N5O, CAS 83961-89-1
5-Nitrosopyrimidine-2,4-diamine
CAS 83961-89-1C4H5N5O

Frequently asked questions

What is the molar mass of C4H5N5O?

The molar mass of C4H5N5O is 139.12 g/mol, calculated from standard atomic weights for 4 carbon atoms, 5 hydrogen atoms, 5 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 139.0494 Da.

How many compounds have the formula C4H5N5O?

CompoundList lists 13 compounds with the molecular formula C4H5N5O, including 5-Nitroso-4,6-pyrimidinediamine, 2,6-Diamino-5-iminopyrimidin-4-one, 5-Diazenyl-1H-imidazole-4-carboxamide. 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 C4H5N5O?

C4H5N5O has a degree of unsaturation of 5. 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.