PBT Impurity 58 CAS 210566-88-4
| CAS No. | 210566-88-4 |
| Molecular Formula | C36H38O13 |
| Molecular Weight | 678.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of PBT Impurity 58 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies PBT Impurity 58 (CAS 210566-88-4), a pharmacopoeial impurity reference standard (molecular formula C36H38O13, MW 678.68 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of PBT Impurity 58 (C36H38O13) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures PBT Impurity 58 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C36H38O13 |
| Molecular Weight | 678.68 g/mol |
| Purity | ≥95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2017 |
Recommended Standards
- (+)-alpha-viniferin (2R,2aR,7R,7aR,12S,12aS)-2,7,12-tris(4-hydroxyphenyl)-2,2a,7,7a,12,12a-hexahydrobis[1]benzofuro[3',4':4,5,6;3'',4'':7,8,9]cyclonona[1,2,3-cd][1]benzofuran-4,9,14-triol 62218-13-7 CHEBI:66359 alpha-viniferin (CAS 62218-13-7)
- 5',5''''-Methylenebis(2'-amino-[1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid) (CAS 2378131-12-3)
- Remdesivir Impurity 48 (CAS CATO-C4X-210048)
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- Nikethamide Impurity 16 (CAS CATO-C4X-186116)
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- GST-HG171 Impurity 9 (CAS CATO-C4X-30609)
- 1,1,1,2-Tetrafluoro-2-(trifluoromethyl)oct-3-ene (CAS 261760-26-3)
- (E)-3-(3,4-dimethoxyphenyl)-1-(3-hydroxyphenyl)-2-propen-1-one (CAS 178445-80-2)
- 1-(4-bromophenyl)-N-methylmethanamine 4-Bromo-N-methylbenzylamine 699-03-6 (CAS 699-03-6)
- 3-Methylbutyl 2-pyridyl ketone (CAS 95188-18-4)
- 3-Amino-4-hydroxy-5-(trifluoromethyl)benzaldehyde (CAS 1372865-13-8)
- 3-Bromo-6-chloroquinolin-2(1H)-one (CAS 1197340-22-9)
- Semaglutide impurity 67 (CAS CATO-C4X-222667)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com