Impurity reference standards
Guaifenesin impurity standards
Zemixal lists 10 reference materials related to Guaifenesin, covering the drug substance itself, its process impurities and the products it forms on storage. Among them are 2 pharmacopoeial impurities, 1 isotope-labelled standard and 2 metabolites or hydroxylated analogues.
10reference materials
2pharmacopoeial
1isotope labelled
2metabolites
Batches are supplied with a certificate of analysis, and the supporting spectra can be sent ahead of a purchase order so your QA team can review them. They are bought for system suitability, peak identification, quantitation against limits and the impurity justification sections of regulatory submissions.
By impurity type
Pharmacopoeial2EP, USP, BP or JP named impurities
Isotope labelled1Deuterated, 13C or 15N internal standards
Metabolites2Hydroxy, desmethyl and conjugated forms
Counts are based on product names. One compound can fall into more than one type.
All Guaifenesin reference materials
1–10 of 10 standards
Questions
Guaifenesin impurities, answered
How many Guaifenesin impurity standards does Zemixal list?
The catalogue currently lists 10 compounds for Guaifenesin, including 2 pharmacopoeial impurities, 1 isotope-labelled standard and 2 metabolites or hydroxylated analogues. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Guaifenesin impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Guaifenesin impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.
Are isotope-labelled Guaifenesin standards available?
Yes. 1 stable-isotope labelled compound is listed, suitable as internal standards for LC-MS bioanalysis and trace impurity quantitation.