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API Process Intermediates & Related Compounds

Silybin A,B (mixture)

Available on request

Buy Silybin A,B (mixture) (CAS 802918-57-6) from Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-036177.

Pack sizes
Silybin A,B (mixture) chemical structure
CAS number802918-57-6
FormulaC25H22O10
Molar mass482.4 g/mol
Physical formSolid
InChIKeySEBFKMXJBCUCAI-DBMPWETRSA-N
IUPAC name(2R,3R)-3,5,7-trihydroxy-2-[3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydrochromen-4-one

About Silybin A,B (mixture)

Silybin A,B (mixture) sits in our API Process Intermediates & Related Compounds section and ships worldwide from stock or short lead time. Key data: CAS 802918-57-6, formula C25H22O10 and molar mass 482.4 g/mol. It is handled as a solid.

Common uses in the lab and plant

  • API route development
  • Impurity fate & purge studies
  • Analytical method development
  • Fine chemical synthesis

Safe handling

It carries the GHS signal word Warning (H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Every shipment includes a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Silymarin

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

Silymarin standards

Typical uses

  • API route development
  • Impurity fate & purge studies
  • Analytical method development
  • Fine chemical synthesis

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of Silybin A,B (mixture)
Product nameSilybin A,B (mixture)
Catalogue numberZX-036177
CAS number802918-57-6
IUPAC name(2R,3R)-3,5,7-trihydroxy-2-[3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydrochromen-4-one
Molecular formulaC25H22O10
Molar mass482.4 g/mol
Exact mass482.1213
Physical formSolid
XLogP32.4
H-bond donors / acceptors5 / 10
Topological polar surface area155 Ų
InChIKeySEBFKMXJBCUCAI-DBMPWETRSA-N
SMILESCOC1=C(C=CC(=C1)C2C(OC3=C(O2)C=C(C=C3)[C@@H]4[C@H](C(=O)C5=C(C=C(C=C5O4)O)O)O)CO)O
PubChem CID3086637
SynonymsSilybin,mixture of A and B, Silybin, Silibin, Silybin (Mixture of Diastereomers)

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

  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, 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 Silybin A,B (mixture)
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 Silybin A,B (mixture)

Which CAS number identifies Silybin A,B (mixture)?
Silybin A,B (mixture) is registered under CAS 802918-57-6. You may also see it listed as Silybin,mixture of A and B, Silybin, Silibin. Our catalogue number for this item is ZX-036177.
What are the formula and molar mass of Silybin A,B (mixture)?
For Silybin A,B (mixture), its formula is C25H22O10 and its molar mass is 482.4 g/mol. The systematic (IUPAC) name is (2R,3R)-3,5,7-trihydroxy-2-[3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydrochromen-4-one. InChIKey SEBFKMXJBCUCAI-DBMPWETRSA-N lets you match it in any structure database.
How is Silybin A,B (mixture) used in pharmaceutical QC?
Silybin A,B (mixture) is a characterised reference material linked to Silymarin. 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 Silybin A,B (mixture)?
The grade and assay are confirmed on the quotation and the batch COA. 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 Silybin A,B (mixture)?
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 Silybin A,B (mixture) to my country?
Yes. Because Silybin A,B (mixture) 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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