L-Cystine-S34

Name: L-Cystine-S34
Brand: Vaqora Chemicals
SKU: VQ-036489

About L-Cystine-S34

Listed under CAS 113512-08-6, L-Cystine-S34 is a stable isotope labelled analogue related to Cystine available from Vaqora Chemicals. Formula C6H12N2O4S2, molecular weight 244.11 g/mol. Its systematic (IUPAC) name is (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]di(34S)sulfanyl]propanoic acid. It is also known as L-Cystine-34S2 or TMID-0818.

The product is provided 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.

This isotope-labelled compound is used as an internal standard for LC-MS and LC-MS/MS quantitation of Cystine and related analytes in bioanalytical, pharmacokinetic and impurity studies. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

LC-MS/MS internal standard
Bioanalytical quantitation
Pharmacokinetic studies

Industries

Related to Cystine

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

Cystine impurities

Specifications & identifiers

Chemical identifiers
Product name	L-Cystine-S34
Catalogue No.	VQ-036489
CAS Number	113512-08-6
IUPAC name	(2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]di(34S)sulfanyl]propanoic acid
Molecular formula	C₆H₁₂N₂O₄S₂
Molecular weight	244.11 g/mol
Exact mass	244.0154
Grade	Reference Standard
HSN code	38229090
InChIKey	LEVWYRKDKASIDU-RWTAFAFMSA-N
SMILES	C([C@@H](C(=O)O)N)[34S][34S]C[C@@H](C(=O)O)N
PubChem CID	163322616

Physical properties
Physical form	Solid
LogP (XLogP3)	-6.3
H-bond donors / acceptors	4 / 8
TPSA	177 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 L-Cystine-S34?

The CAS Registry Number of L-Cystine-S34 is 113512-08-6. It is also known as L-Cystine-34S2, TMID-0818.

What is the molecular formula and molecular weight of L-Cystine-S34?

L-Cystine-S34 has the molecular formula C6H12N2O4S2 and a molecular weight of 244.11 g/mol. Its IUPAC name is (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]di(34S)sulfanyl]propanoic acid.

What is L-Cystine-S34 used for?

L-Cystine-S34 is supplied as a characterised reference material related to Cystine. 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 L-Cystine-S34 can I order?

We supply L-Cystine-S34 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 L-Cystine-S34?

Yes. Every lot of L-Cystine-S34 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 L-Cystine-S34 be shipped internationally?

Yes. We export L-Cystine-S34 worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.