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Cilastatin Sodium impurities and related standards

Cilastatin Sodium is held here as a working collection of 60 reference materials across 10 CAS numbers. Within the range, numbered impurities go up to 53. and 1 EP-designated impurities are named explicitly 57 of the entries are impurity-type materials of the parent, 59 are salt or counter-ion variants and 2 are nitrosamine analogues. 5 entries carry a verified structure drawing, a coverage of 8%; the rest are listed without a structure rather than with an unverified one. 5 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly, while 55 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. Asking for the specific impurity by letter and by structure is faster than asking for a percentage of total related substances, because the second question has no single answer.

Sources: DailyMed (US NLM) - IMIPENEM AND CILASTATIN (IMIPENEM AND CILASTATIN SODIUM) INJECTION, POWDER, FOR SOLUTION IMIPENEM AND CILASTAT.

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

In this group: 4 impurity reference standards · 1 fine chemical · 1 multi-component standard. CAS numbers are listed for 6 of 6; 6 entries carry a structure drawing.

On this page

6 reference standards

All entries — structure, identifiers and pack sizes

6 reference standards

Frequently asked

How many Cilastatin Sodium-related reference standards do you hold?
6 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 6 of them and 6 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Cilastatin Sodium 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 Cilastatin Sodium 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 Cilastatin Sodium 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.