Paclitaxel Impurity 32 (Baccatin VI) CAS 57672-79-4
| CAS No. | 57672-79-4 |
| Molecular Formula | C37H46O14 |
| Molecular Weight | 714.75 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Paclitaxel Impurity 32 (Baccatin VI) (CAS 57672-79-4), a pharmacopoeial impurity reference standard (molecular formula C37H46O14, MW 714.75 g/mol) used for the identification and quantification of trace impurities in APIs.
Paclitaxel Impurity 32 (Baccatin VI) (C37H46O14) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 Paclitaxel Impurity 32 (Baccatin VI) 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 | C37H46O14 |
| Molecular Weight | 714.75 g/mol |
| Purity | 97%+ |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Paclitaxel Standards
- Paclitaxel Impurity 17 (7-(Triethylsilyl)baccatin III) (CAS 115437-21-3)
- Paclitaxel Impurity 17(13-O-(Triethylsilyl) Baccatin III) (CAS 208406-86-4)
- Paclitaxel Impurity 21 (CAS 30244-37-2)
- Paclitaxel Impurity 60 (CAS CATO-C4X-184260)
- Paclitaxel EP Impurity G (CAS 78432-77-6)
- Paclitaxel EP Impurity H (CAS 78454-17-8)
- Paclitaxel Impurity 36 (CAS 153415-46-4)
- Paclitaxel EP Impurity A (CAS 173101-54-7)
Recommended Standards
- 1,4-O-Diferuloylsecoisolariciresinol (CAS 56973-66-1)
- 4,4',4'',4'''-(Pyrene-1,3,6,8-tetrayltetrakis(ethyne-2,1-diyl))tetrabenzaldehyde (CAS 2438216-59-0)
- 5,5'-Diisopropyl-3,3'-dimethyl-[2,2'-binaphthalene]-1,1',6,6',7,7'-hexayl hexaacetate (CAS 105201-55-6)
- Posaconazole Impurity 51 (CAS 357189-94-7)
- N-Nitroso Terbutaline impurity 132 (CAS CATO-C4X-1183132)
- Deflazacort Impurity 11 (CAS CATO-C4X-233611)
- Terlipressin EP Impurity H (CAS CATO-C4X-21938)
- 3-(6-Aminohexyl)-4-hydroxy-5,5-dimethyl-4-phenyloxazolidin-2-one (CAS 107196-93-0)
- 3-(4-Bromophenyl)-6-methyl-2H-benzo[b][1,4]oxazine (CAS 351003-33-3)
- 4,4-Dimethyl-3-{[4-(trifluoromethyl)phenyl]methyl}-1,3-oxazolidine (CAS 866157-37-1)
- tert-Butyl 2-(4-fluorophenyl)acrylate (CAS 1803341-99-2)
- tert-Butyl 8-hydroxy-6-oxa-3-azabicyclo[3.2.1]octane-3-carboxylate (CAS 1638772-20-9)
- (2-Bromophenyl)(3-(3-(pyrazin-2-yl)-1,2,4-oxadiazol-5-yl)azetidin-1-yl)methanone (CAS 1324507-44-9)
- Fibrinopeptide B (human) (CAS 36204-23-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com