1-Bis(4-fluorophenyl)methyl-4-(ethoxycarbonyl)piperazine
- CAS
- 156640-07-2
- Formula
- C20H22F2N2O2
- MW
- 360.4 g/mol
ZX-039182
Impurity reference standards
Flunarizine impurity standards
For Flunarizine, the Zemixal catalogue holds 10 impurity and reference standards that support release testing, stability programmes and regulatory dossiers. Counted by type, there are 4 pharmacopoeial impurities and 1 degradation product.
10reference materials
4pharmacopoeial
1degradants
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. Laboratories use them to validate related-substance methods, set specification limits under ICH Q3A and Q3B, and identify unknown peaks in stability samples.
By impurity type
Pharmacopoeial4EP, USP, BP or JP named impurities
Degradants1N-oxides, dimers, lactones and breakdown products
Counts are based on product names. One compound can fall into more than one type.
All Flunarizine reference materials
1–10 of 10 standards
Questions
Flunarizine impurities, answered
What Flunarizine reference materials are available?
The catalogue currently lists 10 compounds for Flunarizine, including 4 pharmacopoeial impurities and 1 degradation product. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Flunarizine 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 Flunarizine 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.