(2S)-2-[(4S)-2-Oxo-4-propylpyrrolidin-1-yl]butanoic Acid
- CAS
- 2165431-90-1
- Formula
- C11H19NO3
- MW
- 213.27 g/mol
ZX-020929
Impurity reference standards
Brivaracetam impurity standards
For Brivaracetam, the Zemixal catalogue holds 28 impurity and reference standards that support release testing, stability programmes and regulatory dossiers. Counted by type, there are 1 pharmacopoeial impurity and 5 metabolites or hydroxylated analogues.
28reference materials
1pharmacopoeial
5metabolites
Each lot ships with a certificate of analysis, and characterisation data such as 1H-NMR, mass spectrum and HPLC purity can be shared before you order. 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
Pharmacopoeial1EP, USP, BP or JP named impurities
Metabolites5Hydroxy, desmethyl and conjugated forms
Counts are based on product names. One compound can fall into more than one type.
All Brivaracetam reference materials
1–28 of 28 standards
(4R)-2-Oxo-4-propyltetrahydrofuran-3-carboxylic acid
- CAS
- 2052297-76-2
- Formula
- C8H12O4
- MW
- 172.18 g/mol
ZX-028345
(R)-2-(2-(tert-Butoxy)-2-oxoethyl)pentanoic Acid
- CAS
- 112106-16-8
- Formula
- C11H20O4
- MW
- 216.27 g/mol
ZX-028337
(R)-3-((((S)-1-Amino-1-oxobutan-2-yl)amino)methyl)hexanoic Acid
- CAS
- 2397556-18-0
- Formula
- C11H22N2O3
- MW
- 230.3 g/mol
ZX-023641
(R)-N-((S)-1-Amino-1-oxobutan-2-yl)-3-(bromomethyl)hexanamide
- CAS
- 2242647-55-6
- Formula
- C11H21BrN2O2
- MW
- 293.2 g/mol
ZX-028342
(S)-2-((R)-4-((S)-2-Hydroxypropyl)-2-oxopyrrolidin-1-yl)butanamide
- CAS
- 357336-94-8
- Formula
- C11H20N2O3
- MW
- 228.29 g/mol
ZX-028341
(S)-2-((R)-4-((S)-2-Hydroxypropyl)-2-oxopyrrolidin-1-yl)butanoic acid
- CAS
- 1437631-18-9
- Formula
- C11H19NO4
- MW
- 229.27 g/mol
ZX-028340
(S)-2-(2-Oxo-4-propyl-2,5-dihydro-1H-pyrrol-1-yl)butanamide
- CAS
- 357338-13-7
- Formula
- C11H18N2O2
- MW
- 210.27 g/mol
ZX-023638
Ethyl (4R)-2-oxo-4-propyltetrahydrofuran-3-carboxylate
- CAS
- 2052297-73-9
- Formula
- C10H16O4
- MW
- 200.23 g/mol
ZX-028344
Questions
Brivaracetam impurities, answered
What Brivaracetam reference materials are available?
The catalogue currently lists 28 compounds for Brivaracetam, including 1 pharmacopoeial impurity and 5 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 Brivaracetam 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 Brivaracetam 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.