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Pseudoephedrine impurities and related standards

Pseudoephedrine is held here as a working collection of 22 reference materials across 13 CAS numbers. 4 of the entries are impurity-type materials of the parent, 5 are salt or counter-ion variants and 7 carry a deuterium label and 3 are nitrosamine analogues. 11 entries carry a verified structure drawing, a coverage of 50%; the rest are listed without a structure rather than with an unverified one. 10 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly, while 12 remain tier C and are kept for search coverage. Isotopically labelled standards are judged on the distribution rather than on a single purity number, because a material that is 99 per cent pure chemically can still carry a substantial unlabelled fraction, and that fraction is what biases a quantitative assay. Anyone comparing two suppliers on this parent should ask the same three questions of each: which letters are held, what the content basis is, and whether the structure on the page was verified against the name rather than copied from it.

Sources: DailyMed (US NLM) - GUAIFENESIN AND PSEUDOEPHEDRINE HCL TABLET, EXTENDED RELEASE [RUGBY LABORATORIES, INC.].

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

In this group: 4 impurity reference standards · 3 pharmaceutical intermediates · 2 general reference standards · 2 stable isotope labelled standards. CAS numbers are listed for 12 of 12; 12 entries carry a structure drawing.

On this page

12 reference standards

All entries — structure, identifiers and pack sizes

12 reference standards

Frequently asked

How many Pseudoephedrine-related reference standards do you hold?
12 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 12 of them and 12 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Pseudoephedrine 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 Pseudoephedrine 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 Pseudoephedrine 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.