Skip to content
Technical & commercial enquiries: sales@rssechem.com Certificate of analysis issued per lot · Worldwide shipping
Register Request a quote & Contact us

Terramycin impurities and related standards

Terramycin is held here as a working collection of 13 reference materials across 11 CAS numbers. Within the range, numbered impurities go up to 12. 11 of the entries are impurity-type materials of the parent, 1 are salt or counter-ion variants. 10 entries carry a verified structure drawing, a coverage of 77%. 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 3 remain tier C and are kept for search coverage. For a peptide the impurity families are the families of synthesis: deletion sequences from incomplete coupling, epimers at the residues whose alpha proton is acidic enough to be lost, oxidation of methionine, and deamidation of asparagine. A certificate that names the synthetic route the standard was qualified against is more useful than one that only reports purity, since the same impurity can arise from two routes and only one of them will be present in a given product.

Sources: DailyMed (US NLM) - TERRAMYCIN (OXYTETRACYCLINE HYDROCHLORIDE AND POLYMYXIN B SULFATE) OINTMENT [JZ TRADERS LLC].

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

In this group: 13 impurity reference standards · 1 fine chemical. CAS numbers are listed for 14 of 14; 14 entries carry a structure drawing.

On this page

14 reference standards

All entries — structure, identifiers and pack sizes

14 reference standards

Frequently asked

How many Terramycin-related reference standards do you hold?
14 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 14 of them and 14 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Terramycin 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 Terramycin 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 Terramycin 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.