DL-Leucine
DL-Leucine (CAS: 328-39-2), a racemic mixture of leucine enantiomers with a molecular weight of 131.17 g/mol, is a valuable amino acid derivative. It finds application in the synthesis of benzimidazole and pyrimidine hydroxy azo dyes when complexed with transition metals. This compound is also utilised for evaluating chiral amino acid separation techniques, making it a useful reagent in analytical chemistry and research settings.
- IUPAC
- (±)-Amino-4-methylpentanoic acid

Dye Synthesis
DL-Leucine serves as a precursor in the formation of benzimidazole and pyrimidine hydroxy azo dyes. It reacts with various transition metals to create these complex colorants.
Chiral Separation Studies
This racemic mixture is employed in the evaluation and development of techniques for separating chiral amino acids. It provides a standard for assessing the efficacy of chiral separation methods.
Chemical Synthesis Reagent
DL-Leucine is a versatile building block in organic synthesis, particularly for amino acid derivatives and related compounds.
| Molecular weight | 131.17 |
|---|---|
| Linear formula | (CH3)2CHCH2CH(NH2)CO2H |
| Assay | 99% |
| Application | DL-Leucine is a racemic mixture of the D- and L- enantiomers of Leucine. DL-Leucine is used to form benzimidazole and pyrimidine hydroxy azo dyes with various transition metals. DL-Leucine may be used for the evaluation of chiral amino acid separation techniques. |
| Melting point | 293-296 °C (subl.)(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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 DL-Leucine primarily used for?
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DL-Leucine is used to form benzimidazole and pyrimidine hydroxy azo dyes with various transition metals and for the evaluation of chiral amino acid separation techniques.
What are the CAS number and linear formula for DL-Leucine?
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The CAS number for DL-Leucine is 328-39-2, and its linear formula is (CH3)2CHCH2CH(NH2)CO2H.
What grade and purity does Tech Serve Solutions supply for DL-Leucine?
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Tech Serve Solutions supplies DL-Leucine with an assay of 99%. This product is not represented as USP, BP, EP, or any other pharmacopoeia grade.
What are the key safety considerations when handling DL-Leucine?
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When handling DL-Leucine, it is essential to use appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used if necessary. Refer to the safety data sheet for comprehensive handling guidelines.
How is DL-Leucine typically packed and shipped by TSS?
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DL-Leucine is carefully packed and exported by Tech Serve Solutions, adhering to all relevant shipping regulations for chemical compounds.
How can I request a sample or quote for DL-Leucine?
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To request a sample or a quote for DL-Leucine, please contact our sales team through the website or by phone.
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