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Phentermine impurities and related standards

Phentermine is held here as a working collection of 13 reference materials across 11 CAS numbers. 11 entries carry a verified structure drawing, a coverage of 85%. 11 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly, while 2 remain tier C and are kept for search coverage. These are commodity chemistry rather than a drug impurity series, which changes what a buyer should check. The identity is usually straightforward; what varies between suppliers is the trace profile and the water content, and both of those show up in a specification rather than on a chromatogram. 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. 11 of the 13 entries carry a registered CAS number; the remaining 2 are described by structure and name alone.

Sources: DailyMed (US NLM) - PHENTERMINE HYDROCHLORIDE CAPSULE [PD-RX PHARMACEUTICALS, INC.].

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

In this group: 3 fine chemicals · 3 pharmaceutical intermediates · 2 stable isotope labelled standards · 1 chemical reagent. CAS numbers are listed for 11 of 11; 11 entries carry a structure drawing.

On this page

11 reference standards

All entries — structure, identifiers and pack sizes

11 reference standards

Frequently asked

How many Phentermine-related reference standards do you hold?
11 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 11 of them and 11 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Phentermine 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 Phentermine 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 Phentermine 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.