(S)-α-Methoxy-2-naphthylacetic acid
(S)-α-Methoxy-2-naphthylacetic acid (CAS 157134-51-5, C13H12O3) is a chiral carboxylic acid with a molecular weight of 216.23. As a key chiral building block, it is primarily utilised in asymmetric synthesis and broader organic synthesis applications within research and development settings. Its specific stereochemistry makes it valuable for creating enantiomerically pure target molecules.
- IUPAC
- (S)-α-Methoxy-2-naphthaleneacetic acid,(S)-2-NMA

Chiral Building Block in Organic Synthesis
This compound serves as a crucial starting material or intermediate in the stereoselective synthesis of complex organic molecules. Its defined chirality is leveraged to introduce specific stereocentres into target structures.
Asymmetric Synthesis
Utilised in reactions where the formation of a new chiral centre is controlled, leading to enantiomerically enriched products. It is a valuable tool for chemists aiming to synthesise single enantiomers.
Research and Development
Employed in academic and industrial research laboratories for exploring new synthetic routes and developing novel compounds. Its unique structural features are of interest in medicinal chemistry and materials science.
| Molecular weight | 216.23 |
|---|---|
| Empirical formula | C13H12O3 |
| Assay | ≥97.0% (HPLC)97% |
| Optical activity | [α]/D +177±5°, c = 0.1 in methanol |
| Optical purity | enantiomeric excess: ≥99% (HPLC) |
| Melting point | 101-104 °C |

Hazard statements
- H301Toxic if swallowed
Precautionary statements
- P301IF SWALLOWED
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is (S)-α-Methoxy-2-naphthylacetic acid used for?
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(S)-α-Methoxy-2-naphthylacetic acid is primarily used as a chiral building block in asymmetric synthesis and general organic synthesis for research and development purposes.
What is the CAS number and formula for (S)-α-Methoxy-2-naphthylacetic acid?
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The CAS number is 157134-51-5 and the empirical formula is C13H12O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (S)-α-Methoxy-2-naphthylacetic acid with an assay of ≥97.0% (HPLC) and an optical purity of enantiomeric excess ≥99% (HPLC). We do not represent this product as USP, BP, or EP grade.
How should (S)-α-Methoxy-2-naphthylacetic acid be handled safely?
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This compound is classified as toxic if swallowed (H301) and requires careful handling. Use appropriate personal protective equipment including a dust mask (N95), eyeshields, face shields, and gloves. Ensure adequate ventilation.
Is (S)-α-Methoxy-2-naphthylacetic acid available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including (S)-α-Methoxy-2-naphthylacetic acid.
How can I request a sample or quote?
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Please contact our sales team via the website or provide your details to receive a quotation or sample of (S)-α-Methoxy-2-naphthylacetic acid.
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