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Desvenlafaxine impurities and related standards

Desvenlafaxine is held here as a working collection of 34 reference materials across 8 CAS numbers. 13 of the entries are impurity-type materials of the parent, 1 are salt or counter-ion variants and 3 carry a deuterium label and 8 are nitrosamine analogues. 8 entries carry a verified structure drawing, a coverage of 24%; the rest are listed without a structure rather than with an unverified one. 8 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly, while 26 remain tier C and are kept for search coverage. Each of these materials is normally supplied with its own chromatographic purity and its own content basis, and the two numbers are not interchangeable. A standard quoted at 98 per cent by area can be materially lower by mass once residual solvent and water are counted, which changes the weight a laboratory has to weigh. The mass balance check is the step most often skipped: the sum of the parent assay and the specified impurities should account for the sample, and a series that is incomplete makes that sum look better than it is.

Sources: DailyMed (US NLM) - DESVENLAFAXINE TABLET, EXTENDED RELEASE [NUCARE PHARMACEUTICALS, INC.].

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

In this group: 6 fine chemicals · 3 drug metabolite standards · 1 pharmaceutical intermediate · 1 impurity reference standard. 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 Desvenlafaxine-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 Desvenlafaxine 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 Desvenlafaxine 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 Desvenlafaxine 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.