YISHENGMAOLIANBotanical ingredients · B2B sourcing
Ingredients / Nutritional Supplements / L-Cystine
L-Cystine — representative unbranded ingredient image

Representative AI-refined ingredient image; confirm actual lot appearance with a sample.

Nutritional Supplements

L-Cystine

This record describes L-Cystine; L-Cysteine has a separate material page. Match the compound identity and listed 99% specification before comparing commercial terms.

Source-listed formPowder
Source-listed MOQ1 kg
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Source-listed buying values need confirmation for the selected grade. Share any known quantity, destination and document requirements.

Listed product attributes

Source listing values are shown for material selection. They are not a batch certificate or a regulatory approval.

TypeAmino acid
Shelf-Life24months
Dosage FormPowder
Place of OriginShaanxi, China
Product Specification99%
Storage MethodCool & dry place
Specification99% purity
AppearanceWhite crystalline powder
CAS No56-89-3
Molecular formulaC6H12N2O4S2
EINECS200-296-3
Sample10-20g — source listing only; availability, quantity, cost and delivery require confirmation.
Shelf life2 Years

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Supplier-detail table · checked 2026-10-25

Compare these detail-table entries with the main attributes above. Include any difference in your grade-clarification request.

CAS No.56-89-3
AppearanceWhite crystalline powder
Specification99% purity
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L-Cystine · selection context

Compound and grade selection

Identity reference
56-89-3
Specification statement
99% purity
Material appearance
White crystalline powder

Questions for this material

Is this the same catalogue material as L-cysteine?

No interchangeability is assumed. The catalogue has separately named L-Cystine and L-Cysteine records. Specify the exact compound and verify its identity reference and grade rather than choosing by similar spelling.

What should accompany the 99% listing statement?

Request the current written assay definition, reporting basis and lot-related analytical record. A catalogue purity statement is not a test result for a new shipment.

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Define the buying requirements

Identify the offered grade you want to discuss and describe the intended use. Add any known quantity, destination and analytical or document requirements; unresolved details can remain questions in the enquiry.

How MOQ, sample and delivery requirements are confirmed →

Keep the request specific to this material

  • Ask for the current specification, complete composition and relevant analytical records.
  • If a sample is available, confirm its identity and relationship to the offered lot.
  • Confirm commercial terms for the selected grade; catalogue values do not establish a new offer.