Molekula
(S)-(+)-2-Methylbutyric acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
S)-(+)-2-Methylbutyric acid is a chiral carboxylic acid widely used in flavor and fragrance synthesis, pharmaceutical intermediates, and chiral resolution studies. It appears as a colorless to pale yellow liquid with a pungent odor. This compound has a CAS number of 1730-91-2, with the molecular formula C5H10O2 and a molecular weight of 102.13 g/mol. It must be stored between 2 to 8°C and handled with caution, as it carries a **Danger** signal word for its corrosive and hazardous properties. Molekula supplies S)-(+)-2-Methylbutyric acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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100 mg — $88.40 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to light yellow liquid |
| Optical Rotation | +17.8 to +19.8 |
| Purity | ≥98.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 73 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90026524 |
| CAS Number | 1730-91-2 |
| IUPAC Name | (2S)-2-methylbutanoic acid |
| Molecular Formula | C2H5CH(CH3)CO2H |
| Molecular Weight | 102.13 |
| Exact Mass | 102.0681 |
| SMILES | CC[C@H](C)C(=O)O |
| InChIKey | WLAMNBDJUVNPJU-BYPYZUCNSA-N |
| InChI | InChI=1S/C5H10O2/c1-3-4(2)5(6)7/h4H,3H2,1-2H3,(H,6,7)/t4-/m0/s1 |
| PubChem CID | 448893 |
| UN Number | UN3265 |
| REACH Code | Y110 |
| HTS Code | 29156050 |
| Tariff Code | 2915601990 |
Safety & GHS
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Corrosive
GHS05
Hazard statements
- H314 Causes severe skin burns and eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (+)-2-methy
- (+)-2-methylbutanoic acid
- (2S)-2-methylbutanoic acid
- (2S)-2-methylbutyric acid
- (S)-2-methylbutanoic acid
- 2-Methylbutyric acid, (S)-
- Butanoic acid, 2-methyl-, (2S)-
- Butanoic acid, 2-methyl-, (S)-
- R-2 methyl butyric acid
- SMB
Frequently asked questions
What is S)-(+)-2-Methylbutyric acid commonly used for?
It is primarily used as a chiral building block in organic synthesis, flavor and fragrance chemistry, and as a precursor for pharmaceutical intermediates.
What is the molecular formula and molecular weight of S)-(+)-2-Methylbutyric acid?
The molecular formula is **C₅H₁₀O₂** (C₂H₅CH(CH₃)CO₂H) with a molecular weight of **102.13 g/mol**.
What safety classification does S)-(+)-2-Methylbutyric acid have?
It is labeled with the **signal word 'Danger'** due to its corrosive and irritant properties.
How should S)-(+)-2-Methylbutyric acid be stored?
Store it in a tightly sealed container at **2–8°C** to maintain stability and purity.
Does Molekula offer this product in bulk quantities?
Yes, we can supply S)-(+)-2-Methylbutyric acid in bulk, with quantities tailored to your requirements.
What documentation is provided with an order of S)-(+)-2-Methylbutyric acid?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a batch-specific label with purity and enantiomeric excess data.
Ready to order or need a custom pack?
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