(S)-(−)-4-Methoxy-α-methylbenzylamine
(S)-(−)-4-Methoxy-α-methylbenzylamine (CAS: 41851-59-6), a chiral amine with the formula C9H13NO and a molecular weight of 151.21 g/mol, is a valuable building block in asymmetric synthesis. Its defined stereochemistry makes it essential for the creation of enantiomerically pure compounds, particularly in the pharmaceutical and fine chemical industries. Available from Tech Serve Solutions with high optical purity, it serves as a key intermediate in complex organic syntheses.
- IUPAC
- (S)-(−)-1-(4-Methoxyphenyl)ethylamine
- Synonyms
- (S)-(−)-1-(4-Methoxyphenyl)ethylamine

Chiral Resolving Agent
Utilised in the separation of enantiomers of racemic mixtures, enabling the isolation of specific stereoisomers crucial for drug development.
Asymmetric Synthesis
Serves as a chiral auxiliary or building block in the stereoselective synthesis of complex organic molecules, contributing to the desired stereochemistry of the final product.
Pharmaceutical Intermediates
A key intermediate in the multi-step synthesis of active pharmaceutical ingredients (APIs) where chirality is paramount for therapeutic efficacy and safety.
Ligand Synthesis
Employed in the preparation of chiral ligands used in asymmetric catalysis, facilitating enantioselective transformations.
| Molecular weight | 151.21 |
|---|---|
| Empirical formula | C9H13NO |
| Assay | ≥98.5% (GC)99% |
| Density | 1.024 g/mL at 20 °C(lit.) |
| Optical purity | enantiomeric excess: ≥98.5% |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
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)-(−)-4-Methoxy-α-methylbenzylamine used for?
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This compound is primarily used as a chiral building block and resolving agent in asymmetric synthesis, particularly for preparing enantiomerically pure intermediates and final products in the pharmaceutical and fine chemical sectors.
What is the CAS number and formula for (S)-(−)-4-Methoxy-α-methylbenzylamine?
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The CAS number is 41851-59-6, and its molecular formula is C9H13NO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (S)-(−)-4-Methoxy-α-methylbenzylamine with an assay of ≥98.5% (GC) and 99% purity, and an enantiomeric excess of ≥98.5%. We do not represent this product as USP, BP, EP, or other pharmacopoeial grades.
How should (S)-(−)-4-Methoxy-α-methylbenzylamine be handled?
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This substance causes severe skin burns and eye damage (H314). Always wear protective gloves, eye protection, and protective clothing. Ensure adequate ventilation. In case of contact, rinse cautiously with water for several minutes and seek immediate medical advice.
Is this chemical a controlled substance?
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This chemical is not listed as a controlled substance in the provided safety data.
How is this chemical typically packed and exported?
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Tech Serve Solutions packs and exports fine chemicals in accordance with international shipping regulations, ensuring product integrity and safety during transit. Specific packaging details are available upon request.
How can I request a sample or quote for (S)-(−)-4-Methoxy-α-methylbenzylamine?
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To request a sample or a quotation, please contact our sales department through the website or via direct inquiry, providing your specific requirements.
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