L-Cysteine-D-penicillamine Disulfide

Name: L-Cysteine-D-penicillamine Disulfide
Brand: Vaqora Chemicals
SKU: VQ-041389

About L-Cysteine-D-penicillamine Disulfide

Vaqora Chemicals supplies L-Cysteine-D-penicillamine Disulfide, an impurity of Penicillamine registered under CAS number 18840-45-4. With the molecular formula C8H16N2O4S2, it has a molar mass of 268.4 g/mol. Systematically, it is named (2S)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]-3-methylbutanoic acid. Common synonyms include Penicillamine cysteine disulfide and Penicillamine cysteine.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Pharmaceutical QC and development laboratories use this impurity standard of Penicillamine to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. It is used across pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies L-Cysteine-D-penicillamine Disulfide in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Penicillamine

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

Penicillamine impurities

Specifications & identifiers

Chemical identifiers
Product name	L-Cysteine-D-penicillamine Disulfide
Catalogue No.	VQ-041389
CAS Number	18840-45-4
IUPAC name	(2S)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]-3-methylbutanoic acid
Molecular formula	C₈H₁₆N₂O₄S₂
Molecular weight	268.4 g/mol
Exact mass	268.0551
Grade	Reference Standard
HSN code	38229090
InChIKey	BOTADXJBFXFSLA-WHFBIAKZSA-N
SMILES	CC(C)([C@H](C(=O)O)N)SSC[C@@H](C(=O)O)N
PubChem CID	161257

Physical properties
Physical form	Solid
LogP (XLogP3)	-5.7
H-bond donors / acceptors	4 / 8
TPSA	177 Å²
Synonyms	Penicillamine cysteine disulfide, Penicillamine cysteine, Cysteine-penicillamine disulfide, D-Valine, 3-((2-amino-2-carboxyethyl)dithio)-, (R)-, D-Valine, 3-[[(2R)-2-amino-2-carboxyethyl]dithio]-, 3-{[(2R)-2-Amino-2-carboxyethyl]disulfanyl}-D-valine, (2S)-2-amino-3-[[(2R)-2-amino-2-carboxy-ethyl]disulfanyl]-3-methyl-butanoic acid, (S)-2-Amino-3-(((R)-2-amino-2-carboxyethyl)disulfanyl)-3-methylbutanoic acid, (S)-2-Amino-3-(((R)-2-amino-2-carboxyethyl)disulfanyl)-3-methylbutanoicacid

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-Cysteine-D-penicillamine Disulfide?

The CAS Registry Number of L-Cysteine-D-penicillamine Disulfide is 18840-45-4. It is also known as Penicillamine cysteine disulfide, Penicillamine cysteine, Cysteine-penicillamine disulfide.

What is the molecular formula and molecular weight of L-Cysteine-D-penicillamine Disulfide?

L-Cysteine-D-penicillamine Disulfide has the molecular formula C8H16N2O4S2 and a molecular weight of 268.4 g/mol. Its IUPAC name is (2S)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]-3-methylbutanoic acid.

What is L-Cysteine-D-penicillamine Disulfide used for?

L-Cysteine-D-penicillamine Disulfide is supplied as a characterised reference material related to Penicillamine. 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-Cysteine-D-penicillamine Disulfide can I order?

We supply L-Cysteine-D-penicillamine Disulfide 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-Cysteine-D-penicillamine Disulfide?

Yes. Every lot of L-Cysteine-D-penicillamine Disulfide 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-Cysteine-D-penicillamine Disulfide be shipped internationally?

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