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

Vitamin impurities and related standards

Vitamin is held here as a working collection of 55 reference materials across 42 CAS numbers. 10 of the entries are impurity-type materials of the parent, 5 are salt or counter-ion variants and 8 carry a deuterium label. 41 entries carry a verified structure drawing, a coverage of 74%. 40 of them sit in tier A or B, meaning the data behind the page is complete enough to be indexed and quoted directly, while 15 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. Co-elution with the parent is the trap in a series this closely related, so the useful certificate data are the retention time under a named method and the relative retention, not a purity figure alone.

Sources: DailyMed (US NLM) - VITAMIN D (ERGOCALCIFEROL) CAPSULE [STRIDES PHARMA SCIENCE LIMITED].

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

In this group: 19 fine chemicals · 10 general reference standards · 6 stable isotope labelled standards · 5 impurity reference standards. CAS numbers are listed for 42 of 42; 41 entries carry a structure drawing.

On this page

42 reference standards

All entries — structure, identifiers and pack sizes

42 reference standards

Frequently asked

How many Vitamin-related reference standards do you hold?
42 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 42 of them and 41 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Vitamin 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 Vitamin 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 Vitamin 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.