# 3-Aminophenol hydrochloride

**CAS:** 51-81-0  
**PubChem CID:** [12231984](https://pubchem.ncbi.nlm.nih.gov/compound/12231984)  
**Molecular formula:** C₆H₈ClNO  
**Molar mass:** 145.59 g/mol  
**IUPAC:** 3-aminophenol;hydrochloride  
**SMILES:** `C1=CC(=CC(=C1)O)N.Cl`  
**InChIKey:** `DCBCSMXGLXAXDM-UHFFFAOYSA-N`  
**InChI:** `InChI=1S/C6H7NO.ClH/c7-5-2-1-3-6(8)4-5;/h1-4,8H,7H2;1H`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| PSA | 46.3 Ų |
| Hydrogen bond donors | 3 |
| Hydrogen bond acceptors | 2 |
| Rotatable bonds | 0 |
| Heavy atoms | 9 |

## 3D structure

The molecule contains 17 atoms connected by 16 chemical bonds. Interactive 3D model available at: https://molgod.org/molecule/51-81-0/

## Synonyms

- 3-Aminophenol hydrochloride
- m-Aminophenol HCl
- RefChem:92987
- 200-125-2
- NQM2XX7XPO
- Phenol, 3-amino-, hydrochloride
- 51-81-0
- m-aminophenol hydrochloride
- 3-aminophenol,hydrochloride
- 3-aminophenol;hydrochloride

## Data sources

- [PubChem CID 12231984](https://pubchem.ncbi.nlm.nih.gov/compound/12231984)
- [Wikidata](https://www.wikidata.org/wiki/Q27285003)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=51-81-0)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=51-81-0)

---

*Last updated: 2026-10-17 · Generator: MOL-GOD v3.12.33*