Trimethoprim impurities and related standards
23 reference standards related to Trimethoprim held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
In this group: 22 impurity reference standards · 1 stable isotope labelled standard. CAS numbers are listed for 23 of 23; 22 entries carry a structure drawing.
On this page
23 reference standards
All entries — structure, identifiers and pack sizes
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Trimethoprim EP Impurity B
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Trimethoprim EP Impurity I (E-Isomer)
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Trimethoprim EP Impurity J
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4-Desmethoxy-4-bromo Trimethoprim-d3
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Trimethoprim Impurity 5
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Trimethoprim Impurity 13
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Trimethoprim Impurity 13
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Trimethoprim Impurity 14
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Trimethoprim Impurity 15
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Trimethoprim Impurity 16
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Trimethoprim Impurity 16
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Trimethoprim Impurity 17
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Trimethoprim Impurity 17
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Trimethoprim Impurity 18
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Trimethoprim Impurity 19
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Trimethoprim Impurity 20
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Trimethoprim Impurity 22
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Trimethoprim Impurity 25
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Trimethoprim Impurity 30
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Trimethoprim Impurity 60
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Trimethoprim Impurity 61
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Trimethoprim Impurity 64
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Trimethoprim Impurity 64 Oxalate
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23 reference standards
Frequently asked
How many Trimethoprim-related reference standards do you hold?
23 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 23 of them and 22 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Trimethoprim 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 Trimethoprim 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 Trimethoprim 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.