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Sulfur Compounds (Thiols, Sulfides, Sulfonates)

DL-Cystine

Available on request

Buy DL-Cystine (CAS 923-32-0) from Zemixal. Request a quote with price, lead time and documents. Packs from 100 mg. Catalogue no. ZX-038913.

Pack sizes
DL-Cystine chemical structure
CAS number923-32-0
FormulaC6H12N2O4S2
Molar mass240.3 g/mol
InChIKeyLEVWYRKDKASIDU-UHFFFAOYSA-N
IUPAC name2-amino-3-[(2-amino-2-carboxyethyl)disulfanyl]propanoic acid

About DL-Cystine

DL-Cystine is part of the Zemixal sulfur Compounds (Thiols, Sulfides, Sulfonates) range. Identity at a glance: CAS 923-32-0, formula C6H12N2O4S2 and molar mass 240.3 g/mol.

Where it is used

  • Organic synthesis
  • API synthesis

Safe handling

Classified under GHS with signal word Warning and hazard statements H302. Read the SDS before first use.

Available as 100 mg, 250 mg, 1 g and 5 g. Larger or split packs can be arranged. Every shipment includes a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Typical uses

  • Organic synthesis
  • API synthesis

Applications

Specifications and identifiers

Specifications of DL-Cystine
Product nameDL-Cystine
Catalogue numberZX-038913
CAS number923-32-0
IUPAC name2-amino-3-[(2-amino-2-carboxyethyl)disulfanyl]propanoic acid
Molecular formulaC6H12N2O4S2
Molar mass240.3 g/mol
Exact mass240.0238
XLogP3-6.3
H-bond donors / acceptors4 / 8
Topological polar surface area177 Ų
InChIKeyLEVWYRKDKASIDU-UHFFFAOYSA-N
SMILESC(C(C(=O)O)N)SSCC(C(=O)O)N
PubChem CID595
Synonyms2-Azaniumyl-3-((2-Azaniumyl-2-Carboxylatoethyl)Disulfanyl)Propanoate, .beta.,.beta.'-Dithiodialanine, (H-Cys-OH), (+/-)-3,3'-Dithiobis(2-aminopropionicacid), Bis(.beta.-amino-.beta.-carboxyethyl)disulfide, Bis(.beta.-amino-.beta.-carboxyethyl) disulfide, Cystein disulfide, Zystin, 3,3'-Dithiobis (2-aminopropanoic acid), (R,R)-3,3'-Dithiobis(2-aminopropionicacid), Alanine,3'-dithiodi-, Alanine,3'-dithiobis-

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

  • H302Harmful if swallowed

Precautionary statements P264, P270, P301 + P317, P330, P501

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
100 mgQuoted on request
250 mgQuoted on request
1 gQuoted on request
5 gQuoted 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

Which CAS number identifies DL-Cystine?
DL-Cystine is registered under CAS 923-32-0. You may also see it listed as 2-Azaniumyl-3-((2-Azaniumyl-2-Carboxylatoethyl)Disulfanyl)Propanoate, .beta.,.beta.'-Dithiodialanine, (H-Cys-OH). Our catalogue number for this item is ZX-038913.
What are the formula and molar mass of DL-Cystine?
For DL-Cystine, its formula is C6H12N2O4S2 and its molar mass is 240.3 g/mol. The systematic (IUPAC) name is 2-amino-3-[(2-amino-2-carboxyethyl)disulfanyl]propanoic acid. InChIKey LEVWYRKDKASIDU-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for DL-Cystine?
The grade and assay are confirmed on the quotation and the batch COA. Standard packs are 100 mg, 250 mg, 1 g, 5 g. Larger quantities and custom packing can be quoted on request.
Which documents come with DL-Cystine?
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 to my country?
Yes. Because DL-Cystine 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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