# L-Alanine (CAS 56-41-7)

**CAS:** 56-41-7  
**PubChem CID:** [5950](https://pubchem.ncbi.nlm.nih.gov/compound/5950)  
**Molecular formula:** C3H7NO2  
**Molar mass:** 89.09 g/mol  
**IUPAC:** (2S)-2-aminopropanoic acid  
**SMILES:** `C[C@@H](C(=O)O)N`  
**InChIKey:** `QNAYBMKLOCPYGJ-REOHCLBHSA-N`  
**InChI:** `InChI=1S/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6)/t2-/m0/s1`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| logP (XLogP3) | -3 |
| PSA | 63.3 Ų |
| Hydrogen bond donors | 2 |
| Hydrogen bond acceptors | 3 |
| Rotatable bonds | 1 |
| Heavy atoms | 6 |

## 3D structure

The molecule contains 13 atoms connected by 12 chemical bonds. Interactive 3D model available at: https://molgod.org/molekula/56-41-7/

## Synonyms

- L-alanine
- 56-41-7
- alanine
- (S)-Alanine
- (2S)-2-Aminopropanoic acid
- L-alpha-alanine
- (S)-2-Aminopropanoic acid
- L-2-Aminopropionic acid
- 2-Aminopropionic acid
- L-(+)-Alanine

## Available in the shop

[L-Alanine (CAS 56-41-7) — Shandong Yuanlian](https://molgod.org/sds-cards/l-alanine-cas-56-41-7-shandong-yuanlian/)

## Data sources

- [PubChem CID 5950](https://pubchem.ncbi.nlm.nih.gov/compound/5950)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=56-41-7)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=56-41-7)

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