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Astragalus impurities and related standards

Astragalus is held here as a working collection of 7 reference materials across 7 CAS numbers. 7 entries carry a verified structure drawing, a coverage of 100%. 7 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly. Materials of this kind are used as building blocks, reagents and analytical references rather than as degradants of one drug, so the questions that decide usability are different: batch-to-batch consistency, the water and counter-ion content the certificate has to state, and whether the structure on the page was verified rather than copied from a name. Because the group spans many small related compounds rather than one parent, the practical question for a buyer is which members are held at all: a route scouting exercise usually needs a handful of specific analogues, not the whole shelf. 7 of the entries are metabolites and conjugates, which is the part of the range most often requested as a set rather than individually.

Sources: DailyMed (US NLM) - ASTRAGALUS ARNICA LIQUID [URIEL PHARMACY INC.].

7 reference standards related to Astragalus held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.

CAS numbers are listed for 7 of 7; 7 entries carry a structure drawing.

On this page

7 reference standards

All entries — structure, identifiers and pack sizes

7 reference standards

Frequently asked

How many Astragalus-related reference standards do you hold?
7 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 7 of them and 7 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply an Astragalus impurity that is not listed here?
Yes. Non-compendial impurities can be quoted from a structure — a CAS number is not required. Send the structure, a SMILES string or the parent drug substance with your enquiry and we will come back with availability.
What documentation is supplied with Astragalus impurities?
Every lot ships with its own certificate of analysis. The certificate records the catalogue number, the batch number, the tests performed, the specification applied and the result obtained for that lot. A safety data sheet is supplied with the shipment.
Do you publish prices or a lead time for Astragalus impurities?
No price list is published: quotations are prepared per enquiry, because availability and packing depend on the lot and the quantity you need. Send the catalogue number and the quantity and a technical contact will answer with availability and a quotation.

Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to sales@rssechem.com.