L-Cystine, 99%+

Name: L-Cystine, 99%+
Brand: Vaqora Chemicals
SKU: VQ-002127

About L-Cystine, 99%+

L-Cystine (CAS 56-89-3) is an amino acid derivative offered by Vaqora Chemicals in Biochemistry grade with a typical assay of ≥99%. With the molecular formula C6H12N2O4S2, it has a molar mass of 240.3 g/mol. Its systematic (IUPAC) name is (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid. Common synonyms include (R,R)-3,3′-Dithiobis(2-aminopropionicacid) and cystine.

The product is provided as a solid. Literature values give a melting point of above 240 °C. Keep the container tightly sealed and store it in a cool, dry area. Good laboratory practice and suitable PPE are recommended during handling.

It is commonly used for peptide synthesis, cell culture media, biochemical research and pharmaceutical synthesis. Buyers come mainly from academic and industrial research and diagnostics and biotechnology.

We offer L-Cystine in 25 g, 100 g, 500 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Peptide synthesis
Cell culture media
Biochemical research
Pharmaceutical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	L-Cystine, 99%+
Catalogue No.	VQ-002127
CAS Number	56-89-3
IUPAC name	(2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid
Molecular formula	C₆H₁₂N₂O₄S₂
Molecular weight	240.3 g/mol
Exact mass	240.0238
Grade	Biochemistry
Purity / assay	≥99%
HSN code	29309040
InChIKey	LEVWYRKDKASIDU-IMJSIDKUSA-N
SMILES	C([C@@H](C(=O)O)N)SSC[C@@H](C(=O)O)N
PubChem CID	67678

Physical properties
Physical form	Solid
Appearance	Solid
Melting point	>240 °C
LogP (XLogP3)	-6.3
H-bond donors / acceptors	4 / 8
TPSA	177 Å²
Synonyms	(R,R)-3,3′-Dithiobis(2-aminopropionicacid), cystine, L-Dicysteine, beta,beta'-Dithiodialanine, L-Cysteine disulfide, 1-Cystine, Cystine, L-, Dicysteine, Cystine (L)-, Cystine acid, Cysteine disulfide, Cystin

Documents

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

Other grades of CAS 56-89-3

BP/EP

L-Cystine, BP/EP 98.50–101.00%

CAS: 56-89-3
Formula: C₆H₁₂N₂O₄S₂
MW: 240.3 g/mol

VQ-046742

BP/USP/EP / Cell Cult…

L-Cystine, BP/USP/EP, cell culture tested

CAS: 56-89-3
Formula: C₆H₁₂N₂O₄S₂
MW: 240.3 g/mol

VQ-046058

Cell Culture

L-Cystine, cell culture tested

CAS: 56-89-3
Formula: C₆H₁₂N₂O₄S₂
MW: 240.3 g/mol

VQ-046328

Frequently asked questions

What is the CAS number of L-Cystine, 99%+?

The CAS Registry Number of L-Cystine, 99%+ is 56-89-3. It is also known as (R,R)-3,3′-Dithiobis(2-aminopropionicacid), cystine, L-Dicysteine.

What is the molecular formula and molecular weight of L-Cystine, 99%+?

L-Cystine, 99%+ has the molecular formula C6H12N2O4S2 and a molecular weight of 240.3 g/mol. Its IUPAC name is (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid.

Which grade and pack sizes of L-Cystine, 99%+ can I order?

We supply L-Cystine, 99%+ in Biochemistry (≥99%) grade, in 25 g, 100 g, 500 g, 1 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with L-Cystine, 99%+?

Yes. Every lot of L-Cystine, 99%+ 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, 99%+ be shipped internationally?

Yes. We export L-Cystine, 99%+ worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.