# Boron trifluoride

**CAS:** 373-57-9  
**PubChem CID:** [11062313](https://pubchem.ncbi.nlm.nih.gov/compound/11062313)  
**Molecular formula:** CH₄BF₃O  
**Molar mass:** 99.85 g/mol  
**IUPAC:** methanol;trifluoroborane  
**SMILES:** `B(F)(F)F.CO`  
**InChIKey:** `JBXYCUKPDAAYAS-UHFFFAOYSA-N`  
**InChI:** `InChI=1S/CH4O.BF3/c1-2;2-1(3)4/h2H,1H3;`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| PSA | 20.2 Ų |
| Hydrogen bond donors | 1 |
| Hydrogen bond acceptors | 4 |
| Rotatable bonds | 0 |
| Heavy atoms | 6 |

## 3D structure

The molecule contains 10 atoms connected by 8 chemical bonds. Interactive 3D model available at: https://molgod.org/molekula/373-57-9/

## Synonyms

- Boron, trifluoro(methanol)-, (T-4)-
- RefChem:570108
- EINECS 206-766-4
- 373-57-9
- 2802-68-8
- BORON TRIFLUORIDE METHANOL
- methanol;trifluoroborane
- MFCD00071635
- methanol,trifluoroborane
- CH4BF3O

## Available in the shop

[Boron trifluoride - methanol solution (CAS 373-57-9) — Beijing Tong Guang](https://molgod.org/sds-cards/boron-trifluoride-methanol-solution-cas-373-57-9-beijing-tong-guang/)

## Data sources

- [PubChem CID 11062313](https://pubchem.ncbi.nlm.nih.gov/compound/11062313)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=373-57-9)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=373-57-9)

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*Last updated: 2026-09-02 · Generator: MOL-GOD v3.12.33*