histidine
C6H9N3O2
Histidine has the molecular formula C6H9N3O2 and a molar mass of 155.15 g/mol and a melting point of 287 °C.
Properties
| Molecular formula | C6H9N3O2 |
|---|---|
| Molar mass | 155.15 g/mol |
| Exact (monoisotopic) mass | 155.06948 g/mol |
| Melting point | 287 °C |
| logP (octanol–water) | -3.2 |
| Topological polar surface area | 92 Ų |
| Hydrogen-bond donors / acceptors | 3 / 4 |
| Heavy atoms | 11 |
| InChIKey | HNDVDQJCIGZPNO-YFKPBYRVSA-N |
| IUPAC name | (2S)-2-amino-3-(1H-imidazol-5-yl)propanoic acid |
Elemental composition
20 atoms across 4 elements, by mass.
| Element | Atoms | Percent by mass |
|---|---|---|
| Carbon (C) | 6 | 46.45% |
| Nitrogen (N) | 3 | 27.08% |
| Oxygen (O) | 2 | 20.62% |
| Hydrogen (H) | 9 | 5.85% |
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Related compounds
Molar mass and elemental composition are computed from IUPAC 2021 conventional atomic weights. Formula, exact mass and the computed descriptors come from PubChem, which is US government work and in the public domain. Melting point, boiling point and density come from Wikidata under CC0. Properties with no figure shown are absent from those sources rather than zero.