DL-Leucine-d7 (iso-propyl-d7)

About DL-Leucine-d7 (iso-propyl-d7)

DL-Leucine-d7 (iso-propyl-d7) is a stable isotope labelled analogue related to Leucine carrying the CAS registry number 259225-40-6. The compound has the formula C6H13NO2, corresponding to a molecular weight of 138.22 g/mol. Its systematic (IUPAC) name is 2-amino-4,5,5,5-tetradeuterio-4-(trideuteriomethyl)pentanoic acid. Alternative names: ( inverted exclamation markA)-Leucine-d7 and DL-Leucine-isopropyl-d7.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Its mass shift relative to the unlabelled analyte makes it a dependable internal standard for LC-MS/MS assays, improving accuracy in bioanalysis, therapeutic drug monitoring and method validation. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer DL-Leucine-d7 (iso-propyl-d7) in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

LC-MS/MS internal standard
Bioanalytical quantitation
Pharmacokinetic studies

Industries

Related to Leucine

View every impurity, metabolite and intermediate we list for Leucine.

Leucine impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	DL-Leucine-d7 (iso-propyl-d7)
Catalogue No.	VQ-041173
CAS Number	259225-40-6
IUPAC name	2-amino-4,5,5,5-tetradeuterio-4-(trideuteriomethyl)pentanoic acid
Molecular formula	C₆H₁₃NO₂
Molecular weight	138.22 g/mol
Exact mass	138.1386
Grade	Reference Standard
HSN code	38229090
InChIKey	ROHFNLRQFUQHCH-UAVYNJCWSA-N
SMILES	[2H]C([2H])([2H])C([2H])(CC(C(=O)O)N)C([2H])([2H])[2H]
PubChem CID	71308992

Physical properties
Physical form	Solid
LogP (XLogP3)	-1.5
H-bond donors / acceptors	2 / 3
TPSA	63.3 Å²

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of DL-Leucine-d7 (iso-propyl-d7)?

The CAS Registry Number of DL-Leucine-d7 (iso-propyl-d7) is 259225-40-6. It is also known as ( inverted exclamation markA)-Leucine-d7, DL-Leucine-isopropyl-d7, (4,5,5,5,5',5',5'-2H7)Leucine.

What is the molecular formula and molecular weight of DL-Leucine-d7 (iso-propyl-d7)?

DL-Leucine-d7 (iso-propyl-d7) has the molecular formula C6H13NO2 and a molecular weight of 138.22 g/mol. Its IUPAC name is 2-amino-4,5,5,5-tetradeuterio-4-(trideuteriomethyl)pentanoic acid.

What is DL-Leucine-d7 (iso-propyl-d7) used for?

DL-Leucine-d7 (iso-propyl-d7) is supplied as a characterised reference material related to Leucine. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of DL-Leucine-d7 (iso-propyl-d7) can I order?

We supply DL-Leucine-d7 (iso-propyl-d7) in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with DL-Leucine-d7 (iso-propyl-d7)?

Yes. Every lot of DL-Leucine-d7 (iso-propyl-d7) is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can DL-Leucine-d7 (iso-propyl-d7) be shipped internationally?

Yes. We export DL-Leucine-d7 (iso-propyl-d7) worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.