Impurity reference standards
Butylhydroxytoluene impurity standards
For Butylhydroxytoluene, the Zemixal catalogue holds 7 impurity and reference standards that support release testing, stability programmes and regulatory dossiers. Counted by type, there are 1 isotope-labelled standard and 3 metabolites or hydroxylated analogues.
7reference materials
1isotope labelled
3metabolites
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
Isotope labelled1Deuterated, 13C or 15N internal standards
Metabolites3Hydroxy, desmethyl and conjugated forms
Counts are based on product names. One compound can fall into more than one type.
All Butylhydroxytoluene reference materials
1–7 of 7 standards
3-[3,5-Di(tert-butyl)-4-hydroxyphenyl]-propanoic acid
- CAS
- 20170-32-5
- Formula
- C17H26O3
- MW
- 278.4 g/mol
ZX-022390
Pentaerythritol 3,5-di-tert-butyl-4-hydroxyhydrocinnamate
- CAS
- 26347-98-8
- Formula
- C22H36O6
- MW
- 396.5 g/mol
ZX-026577
Questions
Butylhydroxytoluene impurities, answered
What Butylhydroxytoluene reference materials are available?
The catalogue currently lists 7 compounds for Butylhydroxytoluene, including 1 isotope-labelled standard and 3 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 Butylhydroxytoluene 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 Butylhydroxytoluene 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 Butylhydroxytoluene standards available?
Yes. 1 stable-isotope labelled compound is listed, suitable as internal standards for LC-MS bioanalysis and trace impurity quantitation.