Molekula
D-Leucine
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
D-Leucine is a naturally occurring amino acid, the D-enantiomer of leucine, used in pharmaceuticals and biochemical research. It is a key component in peptide synthesis, for example as the D-leucine residue at position 6 of the GnRH agonist leuprolide. CAS 328-38-1, molecular formula C6H13NO2, molecular weight 131.17 g/mol. Stored at ambient conditions with no signal word required. Molekula supplies D-Leucine 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.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — £33.60 per pack ex VAT · £40.32 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Specific rotation | -14 to -16 |
| Loss on Drying | <0.20% |
| Assay | 98 - 100.5% |
| Residue on Ignition | <0.10% |
| Lead (Pb) | <10ppm |
| Arsenic (As) | <1ppm |
| Chlorine (Cl) | <0.020% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 0 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 293 °C |
Source: PubChem CID 439524 (DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 12191927 |
| CAS Number | 328-38-1 |
| IUPAC Name | (2R)-2-amino-4-methylpentanoic acid |
| EC Number | 206-327-7 |
| Molecular Formula | (CH3)2CHCH2CH(NH2)CO2H |
| Molecular Weight | 131.17 |
| Exact Mass | 131.0946 |
| SMILES | CC(C)C[C@H](C(=O)O)N |
| InChIKey | ROHFNLRQFUQHCH-RXMQYKEDSA-N |
| InChI | InChI=1S/C6H13NO2/c1-4(2)3-5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m1/s1 |
| PubChem CID | 439524 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2922.49.8000 |
| Tariff Code | 2922498590 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
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
- (2R)-2-amino-4-methylpentanoic acid
- (R)-(-)-Leucine
- (R)-4-METHYL-2-AMINOPENTANOIC ACID
- D-2-Amino-4-methylvaleric acid
- D-Leu
- D-Leucin
- D-leucine zwitterion
- D-LEUCINELEUCINE, D-
- D-Leuzin
- Leucine, D-
Frequently asked questions
What is D-Leucine commonly used for?
D-Leucine is primarily used in biochemical research, peptide synthesis, and as a building block for chiral compounds. It is also employed in studies involving amino acid metabolism and enantiomeric separation.
What is the chemical formula and molecular weight of D-Leucine?
The chemical formula is C6H13NO2, and the molecular weight is 131.17 g/mol.
How should D-Leucine be stored?
Store D-Leucine at ambient temperature in a cool, dry place, away from moisture and direct sunlight.
What grades of D-Leucine does Molekula supply?
Molekula supplies analytical grade and biochemical grade D-Leucine, suitable for research and development applications.
Can Molekula supply D-Leucine in bulk quantities?
Yes, Molekula can supply D-Leucine in bulk, with quantities and packaging options tailored to your requirements—please contact us for details.
What documentation comes with an order of D-Leucine?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet for traceability and compliance.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.