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Stable Isotope Labelled Standards (Deuterated, 13C, 15N)

DL-Cystine-D4

Reference StandardAvailable on request

Buy DL-Cystine-D4 (CAS 108641-83-4) from Zemixal: C6H12N2O4S2, COA and SDS with every lot, worldwide shipping. Catalogue no. ZX-038786.

Pack sizes
DL-Cystine-D4 chemical structure
CAS number108641-83-4
FormulaC6H12N2O4S2
Molar mass244.3 g/mol
Physical formSolid
HS code38229090
InChIKeyLEVWYRKDKASIDU-LNLMKGTHSA-N
IUPAC name2-amino-3-[(2-amino-2-carboxy-1,1-dideuterioethyl)disulfanyl]-3,3-dideuteriopropanoic acid

About DL-Cystine-D4

Zemixal lists DL-Cystine-D4 for laboratories that identify, quantify or control Acetylcysteine and its related substances. Identity at a glance (Reference Standard): CAS 108641-83-4, formula C6H12N2O4S2 and molar mass 244.3 g/mol. It is handled as a solid.

Common uses in the lab and plant

  • LC-MS/MS internal standard
  • Bioanalytical quantitation
  • Pharmacokinetic studies

Handling and storage

Classified under GHS with signal word Warning and hazard statements H319. Read the SDS before first use.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Every shipment includes a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Acetylcysteine

See every impurity, metabolite and related compound we list for this API.

Acetylcysteine standards

Typical uses

  • LC-MS/MS internal standard
  • Bioanalytical quantitation
  • Pharmacokinetic studies

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Deuterated and Stable-Isotope-Labelled Compounds

Specifications and identifiers

Specifications of DL-Cystine-D4
Product nameDL-Cystine-D4
Catalogue numberZX-038786
CAS number108641-83-4
IUPAC name2-amino-3-[(2-amino-2-carboxy-1,1-dideuterioethyl)disulfanyl]-3,3-dideuteriopropanoic acid
Molecular formulaC6H12N2O4S2
Molar mass244.3 g/mol
Exact mass244.049
GradeReference Standard
Physical formSolid
XLogP3-6.3
H-bond donors / acceptors4 / 8
Topological polar surface area177 Ų
HS code38229090
InChIKeyLEVWYRKDKASIDU-LNLMKGTHSA-N
SMILES[2H]C([2H])(C(C(=O)O)N)SSC([2H])([2H])C(C(=O)O)N
PubChem CID12297020
SynonymsDL-Cystine-3,3,3',3'-d4, 3,3'-disulfanediylbis(2-aminopropanoic-3,3-d2 acid)

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H319Causes serious eye irritation

Precautionary statements P264 + P265, P280, P305 + P351 + P338, P337 + P317

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of DL-Cystine-D4
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about DL-Cystine-D4

Which CAS number identifies DL-Cystine-D4?
DL-Cystine-D4 is registered under CAS 108641-83-4. You may also see it listed as DL-Cystine-3,3,3',3'-d4, 3,3'-disulfanediylbis(2-aminopropanoic-3,3-d2 acid). Our catalogue number for this item is ZX-038786.
What are the formula and molar mass of DL-Cystine-D4?
For DL-Cystine-D4, its formula is C6H12N2O4S2 and its molar mass is 244.3 g/mol. The systematic (IUPAC) name is 2-amino-3-[(2-amino-2-carboxy-1,1-dideuterioethyl)disulfanyl]-3,3-dideuteriopropanoic acid. InChIKey LEVWYRKDKASIDU-LNLMKGTHSA-N lets you match it in any structure database.
How is DL-Cystine-D4 used in pharmaceutical QC?
DL-Cystine-D4 is a characterised reference material linked to Acetylcysteine. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for DL-Cystine-D4?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with DL-Cystine-D4?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship DL-Cystine-D4 to my country?
Yes. Because DL-Cystine-D4 is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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