DL-Leucine
Synonym(s):(±)-Amino-4-methylpentanoic acid;DL-2-Aminmo-4-methylvalerianic acid, DL-2-Aminmo-4-methylpentanoic acid;DL-Leucine
- CAS NO.：328-39-2
- Empirical Formula: C6H13NO2
- Molecular Weight: 131.17
- MDL number: MFCD00063087
- EINECS: 206-328-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-31 18:15:48
What is DL-Leucine?
Chemical properties
White crystalline powder
The Uses of DL-Leucine
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.
DL-Leucine is used for the following applications:
- Used as a standard for the measurement of free amino acids
- Used in the process of tritiated leucine uptake
- Used in solution preparation (various organics were used in different combinations and concentrations to model complex surface tension effects, DL-Leucine is one of them). It is chosen due to its presence in atmospheric aerosols and ice nucleation activity as well as for its surfactant character
Definition
ChEBI: A branched-chain amino acid that consists of glycine in which one of the hydrogens attached to the alpha-carbon is substituted by an isobutyl group.
Properties of DL-Leucine
| Melting point: | 293-296 °C (subl.) (lit.) |
| Boiling point: | 225.8±23.0 °C(Predicted) |
| alpha | [α]D20 -3.0～+3.0゜ (c=4, HCl) |
| Density | 1,293 g/cm3 |
| refractive index | 1.4630 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | 1 M HCl: soluble |
| form | Fine Crystalline Powder |
| pka | pKa: 9.744(25°C) |
| color | White |
| Odor | wh. sm. cryst. or cryst. powd., odorless, sl. bitter taste |
| Water Solubility | soluble |
| Merck | 14,5451 |
| BRN | 636005 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 328-39-2(CAS DataBase Reference) |
| NIST Chemistry Reference | DL-Leucine(328-39-2) |
| EPA Substance Registry System | Leucine (328-39-2) |
Safety information for DL-Leucine
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for DL-Leucine
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